Carl Sagan has said that the science is a way of thinking much more than it is a body of knowledge. Science can be viewed as both a collection of information and a method for learning new things. The new methods include experimentation, testing hypotheses, and observation.
Scientists must never suppress knowledge, regardless of how uncomfortable it may be or how it may annoy people in authority; we are not intelligent enough to select which bits of knowledge are acceptable and which are not. Modern science is an approach to comprehending the physical universe that is based on observable data, logic, and repeated experimentation. That implies that scientists use their own observations to make sense of the world. When they come up with novel theories about how the world operates, they build up a means to test them.
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1. What is the main reasons organisms adapt to competition
A. To avoid competition
B. To better arm them for battle
C. To become more successful than the other organism
D. Organisms do not adapt to competition, they search for it .
2. Match the type of species interaction with the examples
1.Commensalism
2.Competition
3.Mutualism
4.Predation
5.Parasitism
Examples -
A. Plants fighting for the same resources
B. Mistletoe with roots growing into a tree
C. Nitrifying bacteria’s growing inside root nodules (legumes)
D. Spanish moss growing on top of a tree limb
E. A Venus fly trap catching flies.
3. Which of the following would not be the most likely cause of a large number of density dependent deaths in a population?
A. Winter storms
B. Disease-carrying insects
C. Predators
D. Limited resources
Answer:
1) A. To avoid competition
2) 1-D, 2-A, 3-C, 4-E, 5-B
3)A
Explanation:
During____________,
the inactive X chromosome is
silenced by packaging into inactive heterochromatin.
X-inactivation the inactive X chromosome is silenced by packaging into inactive heterochromatin.
What is X-inactivation ?X-inactivation (also called Lyonization, after English geneticist Mary Lyon) is a process by which one of the copies of the X chromosome is inactivated in therian female mammals. The inactive X chromosome is silenced by being packaged into a transcriptionally inactive structure called heterochromatin.The silent X chromosome in mammalian females is a classic example of facultative heterochromatin, the term highlighting the compacted and inactive nature of the chromosome. However, it is now clear that the heterochromatin of the inactive X is not homogeneous--as indeed, not all genes on the inactive X are silenced.X-chromosome inactivation occurs randomly for one of the two X chromosomes in female cells during development. Inactivation occurs when RNA transcribed from the Xist gene on the X chromosome from which it is expressed spreads to coat the whole X chromosome.To learn more about X-inactivation refers to:
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Can snails fall in love?.
Yes, Although it's possible for snails to experience love biochemically, there's no guarantee that they do so for socially or evolutionarily sound reasons.
Snails do copulate for the purpose of reproduction, which can be seen as a type of love. Some snail species engage in a courtship dance before copulation in which they fire calcareous darts, sometimes known as "love darts" (the darts themselves are not used in sperm transfer). Hormones most likely have an impact on reproductive habits.
Snails typically mate in both the male and female roles when they encounter a partner because they are hermaphrodites (they have both male and female reproductive organs). However, if they are alone for a week, experts have shown that they prefer to only mate in the male role.
We don't know if they experience love or pleasure while reproducing, despite the fact that they engage in reproductive actions. Snails at least appear to have a strong preference for cucumbers. We don't sure whether snails experience love or not.
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What is a structure consisting of tissues organized to interact and carry out specific functions? .
A. Atom
B. Molecule
C. Cell
D. Organ
An organ is a structure made up of tissues arranged in a way that allows them to interact and perform particular functions.
The correct option is D.
An organ in biology is a group of tissues connected to form a structural unit that performs a single function. An organ is positioned between a tissue and an organ system in the biological hierarchy. To work together in a function, tissues are made of cells of the same kind.
An organ is made up of a variety of tissue types and serves a particular purpose. For instance, epithelium and smooth muscle tissue combine to produce the intestinal wall. Organ systems, also known as biological systems or body systems, are made up of two or more organs that cooperate to carry out a certain bodily function.
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Part A
Which statement best describes how selective breeding helps horse breeders produce the most desirable traits for racing?
Selective breeding produces horses with a higher rate of survival due to an increase in the genetic diversity of the horse offspring.
Selective breeding helps breeders control which traits are passed on by producing horse offspring that only have the desired traits.
Selective breeding uses two horse parents with the desired traits to increase the chances of passing the desired traits on to
offspring
Selective breeding uses two horse parents with unknown traits to produce offspring with genetic variations and different traits.
Part B
''Selective breeding uses two horse parents with the desired traits to increase the chances of passing the desired traits on to offspring'' is the correct statement.
What is meant by selective breeding?By selecting which male and female animals or plants would normally reproduce sexually and generate offspring together, people can employ animal and plant breeding to selectively acquire certain phenotypic features.
Choosing parents with certain traits to breed with one another in order to generate kids with more desired traits is known as selective breeding. For thousands of years, humans have carefully selected a variety of animals and plants, including agricultural species that produce more.
The goal of selective breeding is to produce cattle with desirable features that are strongly heritable and can thus be passed down from generation to generation. For instance, selective breeding was used to create broccoli, cauliflower, and cabbage from the wild mustard plant.
Since each attribute includes two genes, it is difficult to produce purebreds or animals with homozygous traits. By choosing two animals with the desired expressed characteristic, the likelihood of having offspring with the desired trait improves even when there is still no "hidden" recessive trait. Given that genes may change and are affected by the environment, it is not guaranteed. statement C
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Activity
Watch the video " Preurized Plant and Fungi C," and then anwer the quetion the following qu
Part A
Why do you think preurized eed and pore are a beneficial adaptation for thee plant and fun
Fungal and plant cells have some variations, including:
Cell walls are constructed by plants using cellulose. The fungus cells' cell wall is made of chitin.The food-producing, autotrophic plant cells can make their own food. Cells of heterotrophic (food-consuming) fungi use it as fuel.-Chloroplast-like organelles are not present in the cells of fungi.Since plants are autotrophic organisms, which means they can use the sun's light energy to fuel their growth, they can produce their own food using this energy. Cell walls are constructed by plants using cellulose.Fungi use heterotrophic nutrition. They are unable to cook for themselves or use food as a fuel source. The cell wall of fungi is composed of chitin rather than cellulose.To know more about Fungal visit:-
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Question:--
Why do you think pressurized seed and pore are a beneficial adaptation for thee plant and fungi?
Choose the statement that is true concerning hemoglobin.It is composed of four protein chains and four heme groups.It can bind a maximum of three oxygen molecules.It is found in the plasma portion of blood.When hemoglobin is not bound to oxygen, it appears blue.
The statement that is true concerning hemoglobin is it is composed of four protein chains and four heme groups.
What is hemoglobin?
Hemoglobin is a protein found in red blood cells that carries oxygen from the lungs to the rest of the body. It is made up of four protein molecules (globins) and four heme groups, which contain iron. The iron binds to oxygen in the lungs and releases it as the blood circulates throughout the body. Hemoglobin also carries carbon dioxide back to the lungs so it can be exhaled.
Therefore, The statement that is true concerning hemoglobin is it is composed of four protein chains and four heme groups.
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Study the image of ammonia. How does this molecule of Ammonia form?
it consists of hydrogen and nitrogen. in its aqueous form, it is called ammonium hydroxide. this inorganic compound has a pungent smell.
What color is most strongly reflected by chlorophyll?.
The color that most strongly reflected by chlorophyll is green light.
Green light is the most strongly reflected by chlorophyll.
Chlorophyll has a distinct green color because it reflects green light. The green color of leaves is caused by chlorophyll. Green light, with a wavelength of 550 nm, belongs to the visible light spectrum.
Chlorophyll is the photosynthetic pigment.
Violet-blue and orange-red light wavelengths are absorbed by chlorophyll A.
Photosynthesis is more rapid in blue and red light.
Because chlorophyll reflects green light, it has a distinct green color. Green light has a wavelength of 550 nm and is part of the visible light spectrum.
The photosynthetic pigment is chlorophyll.
Chlorophyll A absorbs violet-blue and orange-red light wavelengths.
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A tudy of 40 U. S. Cardiac care center howed the following ratio of nure to bed. 1. 48 1. 16 1. 24 1. 52 1. 30 1. 28 1. 68 1. 40 1. 12 0. 98 0. 93 2. 76 1. 34 1. 58 1. 72 1. 38 1. 44 1. 41 1. 34 1. 96 1. 29 1. 21 2. 00 1. 50 1. 68 1. 39 1. 62 1. 17 1. 07 02. 11 2. 40 1. 35 1. 48 1. 59 1. 81 1. 15 1. 35 1. 42 1. 33 1. 41
Data cumulative lower upper midpoint width frequency percent frequency percent 1.80 < 2.00 1.90 0.20 4 10.0 37 92.5.
What is cardiac care center?
A cardiac care unit (CCU) is a specialized hospital ward designed to treat people with serious or acute heart problems.A cardiac care unit focuses on patients with heart problems, while an ICU provides care for patients with a wide range of life threatening conditions. Intensive care, critical care, and cardiac care units all treat people with critical conditions, and use similar equipment to monitor and care for them.The main feature of CICU is the availability of the continuous monitoring of the cardiac rhythm by electrocardiography (ECG). This allows early intervention with medication, cardioversion, or defibrillation, improving the prognosis of the severe CVD patients.To learn more about care refers to:
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is rickettsia rickettsia pathogenic or nonpathogenic
Some of the Rickettsia organisms (spp.) are harmful in their mammalian hosts, including humans, and are strictly obligatory intracellular bacteria.
Some of the Rickettsia organisms (spp.) are harmful in their mammalian hosts, including humans, and are strictly obligatory intracellular bacteria. Rickettsial diseases are those brought on by the obligate intracellular bacteria Rickettsia spp., which are found in blood-feeding arthropods like lice, fleas, ticks, and different mites. This makes them a vector-borne pathogen. The peculiar form of bacteria that causes rickettsial diseases and associated infections (such anaplasmosis, ehrlichiosis, & Q fever) can only thrive inside the cells of another creature. Ticks, mites, fleas, and lice are the primary vectors for the majority of these illnesses. Rickettsia rickettsii is the cause of Rocky Mountain Spotting Fever (RMSF), an acute febrile infection spread by ticks. It is the most serious and prevalent rickettsial illness in North America.
(Is rickettsia rickettsia is a pathogenic or nonpathogenic?)
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which stomach compartment of ruminants is considered to be the true stomach?
Answer:
the abomasum
Explanation:
Why i it that vegetable tored in the freezer will have their cell damaged, while nowdrop (Galanthu nivali) in cold countrie have to go through harh winter without their cell being detroyed?
Water expand when it is freeze. So, the cell damaged. Where as snowdrops (Galanthus nivali) are hardy tiny plants that can survive harsh winter.
When you freeze produce, you're actually freezing the water that's inside the plant's cells. When water freezes, it expands, forming ice crystals that break down the cell walls. So, compared to when it was fresh, the texture of thawed produce is significantly softer. This is especially valid for food that is often consumed uncooked.
snowdrops (Galanthus nivali) are hardy tiny plants that have evolved to withstand the cold and break through snow. Their sap contains a type of antifreeze that keeps ice crystals from forming, and the tips of their leaves are specifically toughened to break through frozen ground.
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What is the function of RNA Mcq?.
By means of translation, ribonucleic acid primarily serves to produce proteins. A variety of proteins required for biological functions are created by ribosomes from the genetic information carried by RNA.
RNA is a type of ribonucleic acid that aids in the body's production of proteins. The body's ability to regenerate new cells is attributed to this nucleic acid. Typically, the DNA molecule is used to obtain it. The main distinction between RNA and DNA is that the latter has two strands while the former only has one, and both are made up of the sugar molecule ribose. Deoxyribonucleic acid is translated into proteins with the aid of RNA. In the production of proteins, it serves as an adaptor molecule. In all living cells, they transport genetic data. Between DNA and ribosomes, it acts as a messenger. It encourages the ribosomes to select the proper amino acid, which is necessary for the body to produce new proteins.
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what is one way eukaryotic cell machinery can distinguish between various membranes in the cell?
The use of lipids and proteins that make up the different membranes is one way eukaryotic cell machinery can distinguish between them.
Lipids and proteins have distinct chemical properties that allow the cell's machinery to sort them selectively.
The endoplasmic reticulum (ER), for example, is made up phospholipids, whereas the plasma membrane is made up of a combination of phospholipids, cholesterol, and glycolipids.
Furthermore, the cell can use specific protein receptors to recognize and sort different types of lipids and proteins. These receptors bind to specific lipids and proteins, allowing the cell to distinguish between the various membranes.
Finally, the use of distinct lipids and proteins, as well as specific protein receptors, enables eukaryotic cells to distinguish between different membranes within the cell.
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what part of the nucleotide can be different in the dna molecule?
The part of the nucleotide that can be different in the DNA molecule is the nucleotide bases.
The DNA molecule is composed of four different nucleotide bases: adenine (A), thymine (T), guanine (G) and cytosine (C).
Each strand of DNA is composed of a specific sequence of these nucleotide bases, and the sequence of these bases determines the genetic information found within the molecule.
The differences between strands of DNA are found in the specific nucleotide bases that make up the sequence. While the order of the four bases remains the same in each strand, the specific nucleotide base can differ from strand to strand.
For example, one strand of DNA may have A-T-G-C as the sequence, while another strand may have A-C-G-T. This difference in the nucleotide bases is what makes each strand of DNA unique.
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What makes a pedigree X-linked recessive?.
Genetic problems connected to mutations in genes on the X chromosome are known as X-linked recessive inheritance. As a result of having only one X chromosome, a male with this mutation will experience symptoms.
Generally speaking, a girl who carries a gene mutation in one X chromosome but has a normal gene on the other X chromosome is unaffected. When completing this pedigree with X-linked recessive inheritance, use the symbols X and Y in the genotype to indicate the sex chromosomes that were passed down from the preceding generation. The trait's alleles will be found on the X chromosome, whereas the Y chromosome won't have any of them. Shaded females who are manifesting the recessive phenotype and who can only have the genotype of XrXr should be used to complete this pedigree with X-linked recessive inheritance.
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What is the main concept of the theory of the evolution?.
The qualities that allow creatures to survive in a changing environment will also gradually change or evolve, according to the theory of evolution.
Charles Darwin and Alfred Russel Wallace coined the phrase "theory of evolution by natural selection" in the nineteenth century. According to the natural selection principle, organisms create more offspring that are capable of surviving in their surroundings. Those with more physical ability can survive, develop, and reproduce. Conversely, those that lack such fitness either never reach the age at which they can reproduce or have fewer offspring than their peers.
Natural selection states this as "survival of the fittest". This "fittest" in organisms represents those that are best adapted to their environment and are the ones who reproduce most successfully. They are most likely to pass on their traits to the next generation.
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When it comes to cells is it better to have a high surface area to volume ratio or lower?.
A high of the face area to volume rate is generally better when it comes to cells.
This is because it provides the cell with further face area for the transportation of motes and substances in and out of the cell. This is important for cells in order to maintain homeostasis and gain the necessary accoutrements for growth and survival. In addition,
A advanced face area to volume rate can help to increase the rate of chemical responses that do within the cell. This is salutary as it allows the cell to snappily gain the energy it needs to perform its colorful functions. thus, a advanced face area to volume rate is generally more profitable for cells.
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Imagine that you are at the beach. You can oberve ea urchin, clam, eaweed, and fih in the ocean. Which organim will be more affected by the increaing acidity of the ocean?
The clam is the organism that suffers the most when water becomes more acidic.
The pH of the water is one of the factors that affect aquatic organisms. The pH of a body of water is a measure of its acidity or alkalinity. Acid rain, industrial waste disposal, and other phenomena could raise the pH of water bodies.
The clam is the organism that is most affected by an increase in water's acidity because it affects the amount of CaCO3 in the water, which is needed to make a carbonaceous shell.
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fungal organisms morphologically consistent with candida species
A yeast-like fungal organisms called Candida is the source of the fungal infection known as candidiasis. Candida typically coexists with healthy skin and parts of the body like the mouth, throat, gut, & vagina without posing any health risks.
The forms of fungi can range form ovoid to filamentous. Various morphological kinds of fungi may coexist in a particular population. The unicellular forms reproduce via budding or fission, whereas the filamentous forms expand by elongation.A yeast-like fungal organisms called Candida is the source of the fungal infection known as candidiasis. Candida typically coexists with healthy skin and parts of the body like the mouth, throat, gut, & vagina without posing any health risks. The filamentous version can enter the tissues of the host. About. The yeast (or fungus) called Candida is the source of the infection known as candidiasis. In the body, including the mouth, throat, gut, & vagina, Candida often exists without creating any issues. If vaginal conditions change to favour Candida growth, an infection may result.
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Do snails have teeth?.
Yes, a snail's mouth contains 1,000 to 12,000 teeth. On their tongue, snails have a band of thousands of small teeth.
However, they don't chew with these teeth. In its place, the food is first shredded by the teeth before passing through the tongue. They lose their teeth and grow new ones when they become dull.
Thousands of teeth on snails are used for cutting and scraping food. The radula is made up of rows of teeth that are strung together on a chitinous ribbon. Around 12 000 teeth, or 120 rows of 100 teeth, make up a normal radula. Families differ in how their teeth are arranged and shaped.
With a jaw and a flexible band of thousands, snails and slugs consume.
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how do heat built up when Earth first formed?
The heat was built up from the violent collision of planets in the solar system when Earth first formed.
how do heat build-up when Earth first formed?Because the Earth as we know it is the result of a collision between two planets, a collision that also produced the Moon, the surface of the Earth was extraordinarily hot in the beginning.
While the surface was still extremely warm, the majority of the heat within the very young Earth was swiftly lost to space. The first source of heat is Sun.
Thus, this is how heat was generated during the formation of Earth.
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What is the genotype of a yellow plant if yellow is recessive?.
Given that yellow is the predominant seed colour, the parental genotypes for plants with yellow seeds were YY and those for plants with green seeds were YY.
Alleles are written with capital letters for the dominant and lowercase letters for the recessive. The dominant attribute (in this case, yellow allele, or "Y") is typically associated with the gene letter used to represent the gene (in this case, seed colour). Because both generated gametes carried the same allele, Mendel's parental pea plants consistently produced genuine offspring. All of the progeny of cross-fertilized P plants with opposing qualities were heterozygous for the opposing trait, indicating that their genotype contained various alleles for the gene under investigation. The F1 yellow plants, for instance, that inherited a Y allele from their yellow parent y allele from their green parent had the genotype Yy.
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_____ is a process in which plants take energy from the sun or other light source and convert it into sugar, which can be converted to other food molecules.
Answer: photosynthesis
Explanation:
(HELP NEEDED ASAP WILL GIVE BRAINLIEST) After analyzing the radon table above. Which taxon level do all three organisms also NOT have in common?
-Class
-Family
-Order
-Species
An entity used for classification is a taxon (plural taxa). Species, genera, families, orders, classes, phyla (in animals), divisions (in plants), and kingdoms are examples of taxa at various levels of the hierarchical structure, in that sequence.
What is a taxon example?Taxon is the name for a certain hierarchy level used to categorise living things. An entity used for classification is a taxon (plural taxa).Species, genera, families, orders, classes, phyla (in animals), divisions (in plants), and kingdoms are examples of taxa at various levels of the hierarchical structure, in that sequence. Kingdoms are found at the top of a hierarchy, whereas species are found at the bottom. So each included group can be referred to as a taxon (rank). Generic groups are made up of genera, which are made up of families, which are made up of orders, which are made up of orders, and so on.Mangifera indica's Taxonomic TreeMangoliopsida is a suborder of the kingdom plantae.Magnoliophyta as the classAnacardiaceae Family, Order: SapindalesMangifera, genusSpecie: indica.To Learn more About taxon Refer To:
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How has the emergence of life changed in terms of size and complexity over the past 550 million years?.
About 500 million years ago emergence of life , fungus and plants first emerged. Arthropods quickly followed them. Around 300 million years ago, amphibians followed, then mammals around 200 million years later.
How has the idea of life changed over time?At least 3.5 to 4 billion years ago, life on Earth first evolved, and it has continued to do so ever since. At initially, there were just single-celled, primitive species on Earth. When the first multicellular organisms appeared much later, the biodiversity of the planet significantly increased.
Approximately 3 billion years ago, what kind of life was evolving on Earth?At that time, bacteria were found in African rock. Numerous fossilized bacteria with a similar structure that date to around 3000 million years ago have been discovered in Australia and America.
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product remaining after the animal carcass has been processed
The product left behind after the animal carcass has been processed is referred to as a byproduct. The required answer is the byproduct.
A carcass is an animal's body that has been removed from its head, legs, tail, hide, and viscera before being cut into pieces for consumption. And ABPs or animal byproducts are substances derived from animals but not meant for human consumption. Slaughterhouse waste (skin, bones, horns and hooves, blood, fat, and offal) is one example of ABPs.
This work carcass is derived from the French word carcois and the Latin word carcosium. These two words mean Animal dead body. Therefore, the given statement describes byproducts.
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Do clams have a brain?.
Clams do not have a brain.
Clams, also known as bivalves, are a type of mollusk that has a soft body enclosed in a hard shell. They have a basic nervous system that consists of a pair of ganglia, which are clusters of nerve cells, located near the front of their body. These ganglia control basic functions such as movement and sensing the environment. However, they do not have a centralized brain or nervous system like other animals.
Clams also lack specialized sense organs such as eyes or ears. Instead, they have a pair of simple eyespots that can detect light and shadow, as well as a pair of statocysts that sense changes in orientation. They also have a pair of siphons that they use to filter water and detect food. These basic sensory structures allow clams to detect danger and respond to their environment, but they do not have the advanced processing capabilities of a brain.
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what makes up the genetic code in the dna molecule?
Nucleotide bases makes up the genetic code in the DNA molecule.
The creation of particular amino acids is coded for by a series of nucleotide bases in DNA and RNA, which make up the genetic code. Proteins are created by the fusion of amino acids. Codons are triplet groupings of nucleotide bases that identify particular amino acids and are read as the code.
A codon is a group of three continuous nucleotide bases that codes for an amino acid or marks the start or stop of protein production. The instructions for producing amino acids are provided by these triplet sets. Proteins are created by the fusion of amino acids. Specific amino acids are designated by RNA codons. The amino acid that will be generated depends on the arrangement of the bases in the codon sequence.
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