This is a adult workers symptom that can be present in colonies. For a detailed example, see bee colonies. In bee colonies, they have workers that lay eggs but no queen. Since worker bees are female and have ovaries, they can lay eggs if the colony goes for a long period of time without a queen. But they will only be able to produce infertile eggs.
Why are worker bees considered female?Workers are nevertheless considered female for anatomical and genetic reasons. Genetically, a worker bee does not differ from a queen bee and can even become a laying worker bee, but in most species will produce only male (drone) offspring.The hive will likely be at its busiest during the summer, with between 20,000 and 50,000 bees. The majority of these bees are referred to as "workers," and they are infertile females who spend their entire lives collecting food, making wax cells, and filling those cells with honey and pollen.Learn more about bee colonies here: brainly.com/question/19972646
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10. Which of the following is true about polar covalent bonds?
a. weak bonds between hydrogen and other atoms
b. unequal sharing of electrons among atoms
c. electrons transferred to atom forming cations
d. equal sharing of electrons among atoms
e. electrons transferred forming anions
The correct option is B; Unequal sharing of electrons among atoms, A polar covalent link is a covalent relationship in which the atoms have uneven electron attraction, resulting in unequal electron sharing.
The distribution of electrons around the molecule in a polar covalent bond, also known as a polar bond, is no longer symmetrical.
The uneven electron sharing results from discrepancies in the electronegativities of the two atoms sharing the electrons. Because of the uneven distribution of electrons, partial charges form.
The larger the dipole, the bigger the difference in electronegativities between the two atoms.
Because of the uneven distribution of electrons among the atoms of different elements, slightly positive (+) and slightly negative (-) charges form in various sections of the molecule.
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13. Dead Echinoderms are naturally recycled to make which product?
They are the main ingredient in toothpaste.
They are the main ingredient in limestone.
They are the main ingredient in livestock feed.
They are the main ingredient in collagen.
Answer:
They are the main ingredient in Limestone
Explanation:
Dead Echinoderm endoskeletons are the main ingredient in forming the sedimentary rock, limestone.
Correct Answer: B
Explanation:
Dead Echinoderms are the main ingredient in limestone. It's an important rock that's used in livestock feed, building materials, and toothpaste.
Hope that helps!! :)
9. What phylum do earthworms belong to?
O Porifera
O Platyhelminthes
о Cnidaria
O Annelida
Answer:
Option 4 is the correct answer
Explanation:
Earthworms belong to phylum Annelida.
Characteristics of Annelida
The Annelids are coelomate and triploblastic.They exhibit organ system level organization.Their body is segmented.They respire through their body surface.Nephridia are the excretory organs.They have a well-developed circulatory and digestive system.Use the information in the box below to answer the question: Which DNA sequence will allow the amino acid arginine to be added to a protein?
A. G-C-T
B. C-G-U
C. T-T-T
D. C-G-T
The amino acid arginine can be introduced to a protein by a DNA sequence that reads G-C-T.
How can I open a GCT file?Gene expression data are stored in tab-delimited text files called GCT files . GenePattern provides a description of the GCT file format. Gene expression & RNAi results are also stored in the GCT format.
What is the top stock for DNA sequencing?Illumina With much more over 90% of the worldwide sequencing market and more than 17,000 installed sequencing equipment, Illumina has risen to the top of the industry since its founding in 1998. 3.05 billion base pairs make up human DNA.
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the epidermis of leaves normally is coated with?
The epidermis of leaves normally is coated with a cuticle.
What is the epidermis?
The epidermis, in botany, outermost, protoderm-derived layer of cells covering the stem, root, leaf, flower, fruit, and seed parts of a plant. The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection.
A plant cuticle is a protecting film covering the outermost skin layer of leaves, young shoots, and other aerial plant organs that have no periderm. The film consists of lipid and hydrocarbon polymers impregnated with wax and is synthesized exclusively by the epidermal cells. it prevents excessive loss of water.
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1.Explain the anatomical concepts associated with hematology. Summarize this module's key points in 5-6 sentences.
2.Explain the physiological concepts associated with hematology. Summarize this module's key points in 5-6 sentences.
3.How will you apply the concepts you have learned about hematology in real life and in your future career?
The anatomical concepts associated with hematology include the structure and function of the blood, blood vessels, and the hematopoietic system.
Blood is composed of red blood cells, white blood cells, platelets, and plasma. Blood vessels are responsible for transporting oxygen, nutrients, and other substances throughout the body. The hematopoietic system is the system responsible for forming and maintaining the components of the blood. The key points of this module are that the structure and function of the blood, vessels, and hematopoietic system are essential for maintaining the health of the body.
The physiological concepts associated with hematology include the production, circulation, and destruction of blood cells. Blood cells are produced in the bone marrow and circulated through the body in the circulatory system. Blood cells are destroyed by the reticuloendothelial system. The key points of this module are that the production, circulation, and destruction of blood cells are essential for maintaining the health of the body.
Real-Life Application:
The concepts learned in this module can be applied to real life in a variety of ways. Understanding the structure and function of blood, blood vessels, and the hematopoietic system can help to diagnose and treat various hematological disorders. Additionally, knowledge of the production, circulation, and destruction of blood cells can help to diagnose and treat blood disorders. In my future career, I will use the knowledge I have gained in this module to diagnose and treat hematological disorders.
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What caused the Hindenburg to explode? create a list of the factors that you think caused the Hindenburg explosion. Sketch and upload the factors in a model of the Hindenburg explosion. Be sure to include evidence that supports the idea that some chemical reactions release energy while others store energy.
Both came to the same conclusion that the disaster had been caused by atmospheric conditions that rainy evening, though they disagreed on the precise mechanism.
What ignited the Hindenburg's explosion?The Americans proposed that the rapidly spreading fire was most likely started by an electrical occurrence known as a "brush discharge," which sparked leaking hydrogen.On May 6, 1937, an airship catastrophe known as the Hindenburg disaster took place in Manchester Township, New Jersey, in the United States.At Naval Air Station Lakehurst, the German passenger airship LZ 129 Hindenburg attempted to dock with its mooring mast but caught fire and sank.Bain notes that a combination of components often found in incendiary bombs were used to cover the Hindenburg. His hypothesis is that the Hindenburg accident was brought on by these chemicals igniting. He contends that the primary offender was actually not flammable hydrogen gas!To learn more about Hindenburg's explosion refer to:
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in the last question, you calculated the frequency of the deleterious allele in the population. how many individuals in the village would be carriers for this disease?
The assertion indicates that 32% of the village's residents would be infected with this disease.
What are examples and alleles?For instance, the same trait, eye color, is defined by two alleles that stand for black eyes or brown eyes, etc. All of an organism's alleles together make up its genotype. If a set of alleles are similar to one another, the genotyping of an individual is known as homozygous.
Briefing:We determined the prevalence of the harmful allele in the sample for the final question.
We must now determine the approximate number of disease carriers in the village.
A healthy individual who carries a single recessive harmful gene will have minimal issue carrying the allele it onto their progeny. Even when there are many detrimental recessive alleles in a large population, they seldom show up, therefore this usually isn't a problem.
Simply dividing the total of duplicates of all the variants at that distinct genetic site in the group by the quantity of times an allele of concern is detected in a population, an allele frequencies can be calculated. Allele frequencies can be expressed as a decimal, a fraction, or a percentage.
Therefore, 32% of the village's residents would be disease carriers.
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how does a virus differ from a bacterium? select all that apply. how does a virus differ from a bacterium?select all that apply. a virus, unlike a bacterium, lacks a genome. viruses, unlike bacteria, lack metabolic
Viruses have two dimensions while bacteria have three. - Viruses don't have metabolic enzymes as bacteria do.
Quiz: What makes a virus different from a bacterium?What distinguishes bacteria from viruses? In contrast to viruses, which live inside cells, bacteria are intercellular organisms, meaning they exist between cells (they infiltrate the host cell and live inside the cell). The genetic makeup of the host cell is altered such that it now produces the virus instead of its usual function.
Which of the following attributes sets viruses apart from bacteria?On a molecular level, the primary distinction is that while viruses are a collection of inert chemicals that require a host to survive, bacteria are free-living cells that can live within or outside of a body.
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which of the following is a chemical messenger that flows through the bloodstream and allows communication all over the body? a.) neurons b.) lymph c.) platelets d.) hormones
The correct option is D ; Hormones are the body's chemical messengers. From one set of cells to another, they transport data and instructions.
The endocrine (EN-duh-krin) system affects practically all of the cells, organs, and bodily functions.
Hormones are your body's chemical messengers. They flow in your circulation to tissues or organs
endocrine [EN-duh-krin] system the body's “slow” chemical communication system; a group of glands that produce hormones into the circulation. hormones molecular messengers that are created by the endocrine glands, travel via the circulation, and impact other tissues.
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genetic variation among humans is relatively small when compared to other species. where in the human genome does most of the diversity occur? a. in the mitochondrial DNA
b. in single nucleotide-polymorphisms
c. in sequences that code for tRNA
d. in the homeotic genes
According to the research, the correct answer is Option C. In the human genome, most of the diversity occurs in sequences that code for tRNA.
What is genetic variation?It is the changes that are registered in the genes of a species or a population where in the transfer RNA (tRNA), the molecules recognize genetic information.
In this sense, it can be produced by the combination of genes or by mutation in a deoxyribonucleic acid (DNA) sequence.
Therefore, we can conclude that according to the research, genetic variability is a consequence of the process of natural selection of a gene that codes for tRNA; then this tRNA carries a mutation.
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Dendrites Axon Axon hillock Axolemma Myelin sheath Aven clabral) AxoplasmAxon collateral Cell body Telodendria Axon terminals Search the web and Windows ^ 4 司ENG 7/5/2017
In certain neurons, the axon connects directly to the dendrites. The axon conducts an action potential in this configuration towards the direction of the cell body. An axon's (axolemma's) plasma membrane contains proteins that enable it to generate and conduct action potentials.
Is the term axon the same as axon hillock?
A little hillock known as the axon hillock is where the axon emerges from the cell body. The first segment is located close to the axon hillock in the proximal portion of the axon. There are several thick bundles of microtubules and neurofilaments in the cytoplasm of the axon (axoplasm).
The axon and axon hillock are what?
The connection between the cell body and an axon is the axon hillock. After gathering these signals, the axon sends them to specialized endpoints known as axon terminals, which synapse on other neurons, muscles, or organs. Signals can be transmitted to neighboring cells thanks to chemicals secreted at axon terminals.
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in a particular eukaryotic organism, in which phases of meiosis and mitosis is the number of chromatids in a cell the same? a.anaphase ii and anaphase b.metaphase i and metaphase c.telophase i and telophase d.prophase ii and prophase
Because the number of chromatids stay the same in metaphase I, the answers metaphase I and metaphase are both accurate. Anaphase I and separation follow metaphase I.
Chromosomes are at their second-most condensed and coiled state during the mitotic stage of the eukaryotic cell cycle, known as metaphase (from the Greek - (meta-) beyond, above, and transcending and (phásis) "appearance") (they are at their most condensed in anaphase). The stages of meiosis are prophase, metaphase, anaphase, and telophase, just like mitosis. One significant distinction, however, is that each of these phases happens twice during meiosis: once during the first round of division, known as meiosis I, and once again during the second round of division, known as meiosis II. All the DNA in a eukaryotic cell is copied before it divides. chromatids
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cancer, the uncontrolled growth of cells, often results in a tumor, or mass of abnormal cells. some cancerous tumors consist of many cells that are much smaller than normal. according to model 1 (cell cycle), what part of the cell cycle is most likely being affected
A tumor, or mass of abnormal cells, is frequently produced by cancer, which is the unchecked development of cells. Some malignant tumors are made up of several, drastically smaller-than-normal cells. Which phases of the cell cycle are probably being impacted is Mitosis in
G1 phase.
The protracted growth phase of the cell cycle before cell division in mitosis (M phase), known as interphase, is made up of the G1 phase, S phase, and G2 phase .
The cell expands in size and produces the mRNA and protein needed for DNA synthesis during the G1 phase. The cell moves on to the S phase of the cell cycle once the necessary proteins and growth have been produced. Numerous distinct cell types differ in the length of each phase, including the G1 phase. The cell cycle in human somatic cells lasts roughly 10 hours, while the G1 phase is known as the phase in Xenopus embryos, sea urchin embryos, and Drosophila embryos.
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Q1.10. How would the researchers' experiment have been different if they had used only data from Bird A (and not all 7 birds)? O In both cases, foraging time was longer for cones with spines versus for cones without spines, so the overall result and conclusion would have been the same. O The foraging time difference for Bird A (0.5 seconds) was so small as to be unimportant. The researchers could have entirely misinterpreted the function of cone spinesO Because the foraging time difference based on Bird A was very small compared to that based on seven birds, the researchers would have been less convinced that cone spines affect seed predators Check Answer You may have deduced that Coffey and colleagues' experiment included more than one level of replication. Click the link to discover more < 12 / 16
The experiment would have been different if they had used only data from Bird A.
This is because the foraging time difference for Birds A was very small compared to that based on seven birds. This would have made it difficult for the researchers to draw any conclusions about the effects of cone spines on seed predators, as the data from one bird would be too limited and potentially unreliable.
The researchers may have also failed to account for other factors that could have been influencing the foraging time results, such as the bird's individual preferences or the size of the cones.
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the pecking behavior of laughing gull chicks becomes more accurate with time. this is most likely an example of
The pecking behavior of laughing gull chicks becomes more accurate with time is most likely an example of learning.
What does pecking accomplish?Pecking is the act of a bird using its beak to probe an object or area in search of food or for other reasons. A bird may also battle or attack another bird via pecking. Numerous elements that have been investigated and reported in relation to this behavior can be divided into two categories: genetics, hormonal status, and societal impulses are internal influences.
What environment do Laughing Gulls inhabit?Coastal bays, piers, beaches, and salt marshes. are typically found in coastal areas, with salt marshes and beaches being the most common locations, but also extending several miles inland to rivers, farms, and landfills. in Florida and near the Salton Sea in California, both well inland. Following protection, populations have grown over the past century. The oldest Laughing Gull recorded had at least 22 years on it.
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________ split from a common hominoid ancestor.
Humans and chimpanzees
Humans and chimpanzees
Greater apes and lesser apes
Greater apes and lesser apes
Primates and mammals
Option A, Chimpanzees and humans diverged from a single hominoid progenitor.
It has been proven via research on proteins, fossils, and genetics that chimpanzees and humans shared a common ancestor several million years ago. The majority of experts concur that the sub-group of "humans" known as hominins separated from chimpanzees and other apes between five and seven millennia ago.
The majority of molecular recorders estimated the separation between chimpanzees and humans at the time and many subsequently to have occurred only 5–6 million years ago.
An extinct hominine known as Sahelanthropus tchadensis has some features that have been argued to be consistent with the CHLCA.
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Answer:Greater apes and lesser apes
Explanation:
Cystic fibrosis is an autosomal recessive disease that affects the lungs and digestive system. A young couple named Sara and Daniel are interested in having a child. Neither Sara or Daniel nor either of their parents have cystic fibrosis, but Sara and Daniel both have siblings who have the disease. a)What are the genotypes of both Sara and Daniel’s parents? b)What is the probability that Sara and Daniel are carriers for the disease? (Do the parental Punnett square and remember they DON’T have the disease,) c)Using the probability from part b, what is the chance that, if they are both carriers, their child will have the disease?
Cystic fibrosis is only expressed by individuals who have two copies of the mutated recessive allele. A) the genotypes of both Sara and Daniel’s parents is heterozygous Cc. B) the probability that Sara and Daniel are carriers is 50%. C) Assuming Sara and Daniel are carriers, they have 25% chances of having an affected children.
What is Cystic fibrosis?
Cystic fibrosis is an autosomal affection caused by the recessive allele of a diallelic gene.
Most people have two copies of the normal allele and produce the functional CFTR protein form. Patients with cystic fibrosis have two copies of the mutated recessive allele and so produce the mutated and dysfunctional form for this protein. Heterozygote people possess only one normal CFTR allele and a mutated form for the same allele and produce a normal protein and a mutated protein.The normal allele produces enough functional CFTR protein, so these individuals do not have any adverse effect and the mutated allele is recessive at a physiological level.
In the exposed example,
Sara and Daniel express the normal phenotypeSara and Daniel's parents express the normal phenotypeSara and Daniel's siblings have the disease ⇒ they are homozygous recessive fro the trait.To answer the question, we will call C to the normal allele and c to the mutated allele.
a) What are the genotypes of both Sara and Daniel’s parents?
Knowing Sara and Daniel have siblings with the disease, we can assume their normal parents are heterozygous for the trait and each of the transmitted a recessive allele to that sibling. This is the only way these individuals could express the affection.
The genotype of Sara and Daniel’s parents is Cc.
b) What is the probability that Sara and Daniel are carriers for the disease?
Assuming their parents are heterozygous for the trait, the probabilities of being carriers (Cc) are 50% for each of them.
This is because when crossing two heterozygous individuals, the proportions among the progeny are 25% homozygous dominant, 50% heterozygous (carriers) and 25% homozygous recessive.
Parentals) Cc x Cc
Gametes) C c C c
Punnett square) C c
C CC Cc
c Cc cc
F1) 25% of the progeny is expected to be CC, expressing the normal phenotype.
50% of the progeny is expected to be Cc, expressing the normal phenotype.
25% of the progeny is expected to be cc, expressing cystic fibrosis.
c) Using the probability from part b, what is the chance that, if they are both carriers, their child will have the disease?
Assuming both parents are heterozygous, each of them has 50% chances of transmitting the recessive allele to their progeny.
In this case, the chances of havin an affected children is 25%.
There are 25% chances of having and homozygous recessive children.
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Question 11
What determines the code, or information, of a DNA molecule?
a. the shape (structure) of the nitrogen bases
b. the order (sequence) of the nitrogen bases
c. the color of the nitrogen bases
d. the frequency (number) of nitrogen bases
e. All of these
The order (sequence) of the nitrogen bases determines the code, or information, of a DNA molecule. The correct option to this question is B.
Purines (Adenine (A) and Guanine (G)) and pyrimidines (Cytosine (C) and Thymine (T)) are two kinds of nitrogenous bases found in DNA. Through a glycosidic link, these nitrogenous bases are joined to the C1' of deoxyribose. A nucleoside is a form of deoxyribose that is joined to a nitrogenous base.
The creation of nucleotides, which in turn create the nucleic acids like DNA and RNA, uses a set of five nitrogenous bases. The sequencing of these bases in DNA and RNA is how information is stored, making them of utmost importance.
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camouflage typically evolves as a result of
Predation is usually the catalyst for the evolution of camouflage.
Camouflage, often called cryptic coloring, is a defense or method that creatures adopt to hide their appearance, usually to blend in with their surroundings.
To conceal their location, identity, and movement, organisms use camouflage.Predators can sneak up on prey while prey can avoid predators thanks to this.
The four fundamental types of camouflage are disruptive coloring, disguise, imitation, and concealing coloration.
Animals mimic other species to deceive their food or predators. Zebras, viceroy butterflies, stick bugs, and snowshoe hares are some examples of creatures that may blend in.
An adaptation known as camouflage aids an organism in blending in with its environment. The animal's ability to blend in boosts its capacity to survive and helps it avoid predators.
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arrange the principal forms of rna in order of abundance from least abundant to most abundant. question 9 options: trna, rrna, mrna mrna, rrna, trna trna, mrna, rrna mrna, trna, rrna rrna, trna, mrna
mRNA, tRNA, rRNA is the principal forms of rna in order of abundance from least abundant to most abundant.
What RNA is the least prevalent?mRNA is the least common kind of RNA in a normal cell. The RNA that conveys genetic data copied from DNA is called messenger RNA, or mRNA.Formerly thought to be the primary structural constituent of ribosomes, rRNA has been discovered to be a catalytic component for protein synthesis. It makes up around 80% of the RNA in the cell, making it the most prevalent kind. There are two subunits in rRNA: a big and a small one.Because it codes for and produces all of the proteins in cells, ribosomal RNA, also known as rRNA, is the most prevalent kind of RNA.To learn more about RNA refer to:
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Which of the statements most accurately describes the benefits of the proofreading function of DNA polymerase?
DNA polymerase is always present in the nucleus and can repair all mutations when they occur.
All DNA mutations can be detected and repaired during DNA replication.
DNA polymerase can repair most mutations as they occur during DNA replication.
DNA polymerase can be recruited to recently mutated sites to repair mutations.
DNA polymerase can repair most mutations as they occur during DNA replication.
What is DNA polymerase?
A particular kind of enzyme called DNA polymerase (DNAP) is in charge of creating fresh nucleic acid molecules that are copies of the original DNA. Polymers are huge compounds consisting of smaller, repeating units that are chemically linked to one another. Nucleic acids are polymers. For eukaryotes, DNA polymerases like Rev1 and Polymerases α, β, are only a few examples. DNA polymerases are present in animal cells and are in charge of replicating DNA in the nucleus and mitochondria.
What is the role of DNA polymerase?
DNA polymerases' major function is to efficiently and properly replicate the genome in order to maintain the genetic code and ensure that it is faithfully passed down through the generations.
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the movement of glucose into or out of the hepatocyte depends on the hormone-mediated availability of glut-2 transporters. specifically, glut-2 is inserted into the plasma membrane, or removed from it, depending on the presence, or absence, of insulin. T/F
The availability of glut-2 transporters, which is regulated by hormones, determines whether glucose moves into or out of the hepatocyte. In particular, depending on whether or not insulin is present, glut-2 is either inserted into or ejected from the plasma membrane.
Why are hepatocytes a good fit for GLUT2?Hepatocyte-based GLUT2 functions in both directions (Navale and Paranjape, 2016). It facilitates the absorption of glucose for glycolysis and glycogenesis by hepatocytes. In the course of gluconeogenesis, GLUT 2 controls how much glucose is released from liver cells into the bloodstream.
What do GLUT4 and GLUT2 mean?Important components for typical carbohydrate metabolism include the glucose-transporter gene products from the liver/islets (GLUT2) and muscle/adipose tissue (GLUT4), which are membrane proteins that allow glucose uptake into cells.
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Why is ATP like a money-filled wallet?
Answer:
ATP carries chemical energy spent by cells.
Explanation:
Answer:
ATP really prepares you for the big jobs making you become better at the subject
Explanation:
if a one-dimensional array contains five elements, its highest subscript is ____.
If a one-dimensional array contains five elements, its highest subscript is 4. A collection of objects with the same data type that are kept in a linear arrangement under a single variable name is referred to as a one-dimensional array.
A set of identically typed items make up a one-dimensional array, which is a form of data structure. An array's elements are accessed using their index numbers. This details where the element is located within the array. The most basic type of array is a one-dimensional array, in which each element is stored linearly and may be retrieved individually by providing its index value. If the size is specified as 10, then 10 elements can be stored by programmers. The initial index of an array is always 0. For instance, an array variable with the declaration s[10] has a range of 0 to 9. Each element of an array is kept in a different part of memory. Since a line segment has only length and no width, it is a one-dimensional object.
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Which of the following is true about meiosis?A. Meiosis produces cells that have a haploid chromosome number.B. Meiosis involves only one cell division event.C. Meiosis is how most cells in the body divide.D. Meiosis leads to the production of genetically identical cells.
Answer:
A. Meiosis produces cells that have a haploid chromosome number
Explanation:
Hope that helps.
In bacteria, binary fission can be modeled in?
A. three stages.
B. one stage.
C. two stages.
D. four stages.
Binary fission may be modeled in terms of four states. Option (D) is suitable as a consequence.
The actions of microorganismsSome bacteria aid in food digestion, eliminate disease-causing cells, and supply the body with vital vitamins. Healthy foods like yogurt and cheese are produced using bacteria as well. However, contagious microorganisms can get you sick. In your body, they procreate swiftly.
What causes bacteria, and what does it do?One simple but intricate cell makes up a bacteria. It is capable of surviving on its own, both within and outside the body. Most germs don't pose a threat. In truth, we have a lot of bacteria on and inside of us, especially with the stomach where they aid in digestion. However, certain germs can lead to illnesses.
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which term is used to identify the narrow tubular portion of the long bone that merges into the neck?
Diaphysis is the term which identifies the narrow tubular part of the long bone that merges into the neck. This section (diaphysis) transitions into a wider neck (metaphysis), as well as a broad end.
Long bones are longer than they are wide (epiphysis). A cartilaginous growth plate separates the epiphysis from the metaphysis in a child. The finest view of all the components of a bone is made possible by the structure of a long bone. The two parts of a long bone are the diaphysis and the epiphysis. The diaphysis is the tubular shaft that joins the proximal and distal ends of the bone. The hollow portion of the diaphysis is called the medullary cavity, and it is stuffed with yellow marrow. The walls of the diaphysis are composed of dense, compact, solid bone. The wider area at each end of the bone, called the epiphysis (plural: epiphyses), is filled with spongy bone. Red marrow fills the spaces in the spongy bone.
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Which of the following statements regarding natural selection is false?
Natural selection starts with the creation of new alleles that are directed toward improving an organism's fitness is the false statement
What is natural selection?
Natural selection is the variation in individual survival and procreation brought on by phenotypic variances. The evolution of a population's heritable features across generations is a fundamental mechanism of evolution. The term "natural selection" was popularized by Charles Darwin, who contrasted it with artificial selection, which, in his opinion, is intentional whereas natural selection is not.At the expense of less favorable variants, those genotypic variations (the full complex of genes inherited from both parents) that boost an organism's chances of survival and reproduction are conserved and multiplied from generation to generation. As a result of this process, evolution frequently takes place. Natural selection can result from variations in survival, fertility, growth rate, mate-success rates, or any other part of the life cycle. Natural selection is responsible for all of these variations to the extent that they influence how many offspring an organism produces.Hence, option A is correct
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I understand that the question is Which of the following statements regarding natural selection is false?
A. Natural selection starts with the creation of new alleles that are directed toward improving an organism's fitness.
B. Natural selection depends on the local environment at the current time.
C. Natural selection can be observed working in organisms alive today.
D. Natural selection and evolutionary change can occur in a short period of time (a few generations).
which of the following best describes cancer? a rapid growth of cells within an enclosed membrane a set of tumor-like growths in a specific part of the body an infectious disease that is often fatal an abnormal and uncontrolled multiplication of cells
An abnormal and uncontrolled multiplication of cells describes the cancer the best .
Cancer is a condition when a few of the body's cells grow out of control and spread to other bodily regions. In the millions of cells that make up the human body, cancer can begin practically anywhere.
Stage I cancer is limited to the tissue of origin, while stage 0 cancer is in situ, or limited to surface cells. Stage II denotes localized limited spread, Stage II denotes localized wide and regional dissemination, and Stage IV denotes advanced cancer with metastases and distant spread.
Changes (mutations) to the DNA within cells are what lead to cancer.
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