Answer:
– Students should observe a purple/black color inside the dialysis tubing. IIId. Starch diffusion (cont.) The purple/black color indicates that iodine molecules have passed into the dialysis tubing and reacted with the starch inside the tubing.
Explanation:
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The most important adaptive advantage associated with the filamentous nature of fungal mycelia is.
The large surface area that the filamentous form of fungal mycelia offers is the most significant adaptive benefit suitable for invasive growth and absorptive feeding.
A mycelium, also known as mycelia, is a fungus's root-like structure made up of a mass of branching, thread-like hyphae. Mycelium-based fungi can be found in and on soil as well as many other substrates. A mycelium can be small, growing into an invisible colony, or it might expand to cover thousands of acres, as in the case of Armillaria.
Due to their function in the microbial breakdown of plant matter, mycelia are essential to both terrestrial and aquatic ecosystems. As they grow, they add to the organic portion of the soil and release carbon dioxide into the atmosphere. Many soil invertebrates rely on mycelium as a major food source. Nearly all plant species depend on them, and many species have coevolved with fungus, making them essential to agriculture and to all plant species. Mycelium plays a key role in the fitness of plants by influencing their health, nutrient uptake, and growth.
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What structure is responsible for selecting and transporting only properly processed eukaryotic mrnas into the cytoplasm?.
The nuclear pore complex is responsible for selecting and transporting only properly processed eukaryotic mRNAs into the cytoplasm.
How is the nuclear pore complex formed?It is separated from the rest of the cell by a boundary called the nuclear envelope, which consists of a two-layer membrane. All transport into and out of the nucleus must occur through channels within the envelope formed by large assemblies of proteins (nucleoporins) called nuclear pore complexes. Each NPC contains at least 456 individual protein molecules and is composed of 34 different nucleoporin proteins.Where is the nuclear pore complex located and their function?The nuclear pore complex (NPC) is a macromolecular protein assembly embedded in the double lipid bilayer of the nuclear membrane and is the single gateway for macromolecular transport between the nucleus and cytoplasm. The structure of NPCs (cylindrical ring-like structures lined with nucleoporins that can bind transport factors) determines their transport function.Each nuclear pore allows the free diffusion of small molecules and ions into and out of the nucleus. Nuclear pores also allow desired proteins to move from the cytoplasm to the nucleus if they carry a special sequence that indicates they belong to the nucleus.To learn more about nuclear pore complex visit:
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What group of organisms carry
out photosynthesis?
A. consumers
B. producers
C. decomposers
Answer:
your answer will be B which is producers because they make their own food which creates energy for them to grow and survive
The human genome project was launched in 1986 to better understand the human genome, when was it completed?.
The human genome project was launched in 1986 to better understand the human genome, completed in 2003.
What is human genome project ?The Human Genome Project was an international scientific research project aimed at determining the base pairing of human DNA and identifying, mapping and sequencing all the genes of the human genome physically and functionally. Construction began in 1990 and was completed in 2003.The Human Genome Project will chemically sequence the entire human genetic makeup (i.e., the whole genome), identify all 50,000 to 100,000 genes in the genome, and provide the research tools to analyze them all.It is an international research project whose main mission is to genetic information.Despite the controversy, HGP was initiated in his 1990s, led by American geneticist Francis Collins, with support from the US Department of Energy and the National Institutes of Health (NIH). Scientists around the world quickly joined the effort.To learn more about human genome project from the given link :
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what is the purpose of no-till cultivation or soil conservation? group of answer choices to allow organic matter to accumulate naturally and maintain soil structure and pore space to preserve soil structure and natural fertility to mix in fertilizer to kill and remove weed plants to increase organic matter decomposition and release nutrients for crop growth to allow water to enter the soil and prevent run-off and erosion to open the soil for planting
Increased organic matter retention, nutrient cycling, and water infiltration into the soil are all benefits of no-till farming. It can stop or significantly lessen soil erosion. As a result, choices A and B are the proper responses.
This is especially helpful in areas that frequently experience drought, where a shortage of water is a serious problem linked to crop loss. The adoption of no-till farming also lowers soil erosion and enhances soil biological activity and organic matter. Over time, farmers may see significant financial gains as a result of these advantages.
No-till Without disturbing the soil with tillage, farming, often referred to as zero tillage or straight drilling farming, is a method of growing crops or pasture from year to year.
So that we may state that the goal of no-till agriculture or soil conservation is to allow organic matter to collect naturally and to maintain soil structure and pore space in order to protect soil structure and natural fertility.
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Although stress does not create cancer cells, it may affect their growth by suppressing the activity of: lymphocytes. ... .oxytocin. the adrenal glands.
We hypothesised that central oxytocin might be involved since stress causes intracerebral oxytocin release irrespective of gender.
A major area of study in this subject is how stress impacts our ability to fight off illness.Psychoneuroimmunology's main goal is to comprehend how stress impacts our ability to resist illness. Emotion-focused coping is most typified by trying to lessen stress by avoiding or ignoring a stressor.
When you make an effort to reduce stress in a direct way, as by altering the stressor you are utilising?Problem-focused coping is the attempt to actively reduce stress by altering the stressor or how one interacts with that stressor.
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For a neuron at rest_________ a. both an electrical and diffusion force drive sodium ions out of the cell. b. sodium ions do not move across the membrane in a neuron at rest. c. both an electrical and diffusion force drive sodium ions into the cell.
According to the research, the correct answer is option A. For a neuron at rest both an electrical and diffusion force drive sodium ions out of the cell.
What is a resting neuron?It is the one that presents a potential difference between the internal side and the external side of the plasma membrane or cell membrane, whose function is fundamental in this difference in polarity.
In this sense, the resting membrane is impermeable to Na+ but allows K+ to pass through, that is, it makes the concentration of sodium ions higher on the outside and the concentration of K ions higher on the inside.
Therefore, we can conclude that according to the research, for a neuron at rest there are more sodium ions outside the neuron and more potassium (K) ions inside it.
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The _____________ stage in the life cycle of viruses differs greatly because of the different types of nucleic acids found in each virus. the ___________stage in the life cycle of viruses differs greatly because of the different types of nucleic acids found in each virus.
The synthesis stage in the life cycle of viruses differs greatly because of the different types of nucleic acids found in each virus.
A virus is a submicroscopic infectious agent that replicates only within an organism's living cells. Viruses infect all forms of life, including animals and plants, as well as microorganisms such as bacteria and archaea.
Viruses cannot replicate on their own and must rely on the protein synthesis pathways of their host cell to do so. This is typically accomplished by the virus inserting its genetic material into host cells, co-opting the proteins to create viral replicates, and causing the cell to burst due to the high volume of new viral particles.
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Sunlight hits different locations on Earth with varying intensity. How does this
differential heating affect the atmosphere?
A. At the equator, insolation is less intense, so the air is warmer and
rises.
B. At the equator, insolation is more intense, so the air is warmer and
rises.
C. At the equator, insolation is less intense, so the air is warmer and
sinks.
D. At the equator, insolation is more intense, so the air is warmer and
sinks.
The differential heating affect the atmosphere because at the equator, insolation is more intense, so the air is warmer and rises and is denoted as option B.
What is Insolation?This is a term which is referred to as the amount of solar radiation that is received by a planet. The energy in this process has some absorbed and reflected in the atmosphere and is more intense at the equator.
This high intensity causes the air to be heated which makes it warmer and rises up and is therefore the reason why option B was chosen as the correct choice.
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DNA is considered the blueprint of life, yet in eukaryotic organisms such as humans, it never leaves the nucleus. Which of the following is the BEST explanation for how DNA provides the code for protein synthesis in the cytoplasm?
Inside the nucleus, DNA is translated into mRNA, which then leaves the nucleus before being transcribed into proteins.
The DNA in the nucleus is transcribed into mRNA, which then leaves the nucleus and be translated into proteins at the ribosome.
The DNA in the nucleus is translated into proteins, which then leave the nucleus and enter the cytoplasm where transcription of mRNA can occur.
Under the right conditions, DNA is converted into tRNA, which then leaves the nucleus and is translated into proteins.
DNA is the blueprint of life that never leaves the nucleus but yet makes protein, so the statement saying "The DNA in the nucleus is transcribed into mRNA, which then leaves the nucleus and is translated into proteins at the ribosome" is true. The second option is true.
How does the DNA regulate the cell?Because DNA preserves the genetic content of the organism, it does not enter the cytoplasm directly to encode the protein in eukaryotes. So it transcribes the mRNA, which further goes to the cell cytoplasm and codes for the proteins with enzymes and ribosomes. In this way, DNA being in the nucleus regulates the cell and protein synthesis.
Hence, the second option is true regarding this process.
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Accuracy in the translation of mrna into the primary structure of a polypeptide depends on specificity in the _____.
Accuracy in the translation of mRNA to the primary structure of polypeptide depends on the binding of the anticodon to the codon and the attachment of amino acids to tRNAs.
On what does translation of mRNA depends?
The main components required for translation are mRNA, ribosomes, transfer RNA and other enzymatic factors. mRNA carries the sequence information for the protein to be synthesized.
The translational efficiency of a given mRNA depends on concentration in the cell and sequence as well as on the available cellular resources, including pools of free ribosomes, aa‐tRNAs and availability of translation factors.
Assessing a translation for accuracy can be done by working from side-by-side printouts, systematically uncovering and assessing short sections of text.
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What type of mutation has occurred in the following example?
A.) deletion mutation
B.) insertion mutation
C.) point mutation
Which letter choice is correct? A, B, or C? Use screenshot to help
Males with high fertility rates tend to _______. Select both answers that apply.
Why beta cells would have a greater concentration of rough endoplasmic reticulum and ribosomes than some other cell types.
As Beta cells have a massive production and secretion of insulin, the endoplasmic reticulum and ribosomes have a greater concentration so as to satisfy the demand of the hormone in the body.
What are beta cells?
Beta cells are found in a cluster of cells in the pancreas called pancreatic islets. These cells synthesize, produce and secrete insulin. Glucose levels in blood are regulated by the hormone Insulin.
Beta cells secret the stored insulin and increases production of the hormone when the glucose levels rise in the blood(during digestion).
The response to spike in glucose levels in blood takes like 10 minutes.
These beta cells are either attacked or destroyed by the immune system in people with diabetes or they cannot produce an enough amount of insulin that is required for control of blood sugar levels.
Therefore, as Beta cells have a massive production and secretion of insulin, the endoplasmic reticulum and ribosomes have a greater concentration so as to satisfy the demand of the hormone in the body
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What happens to the rate of
photosynthesis as temperature
decreases?
A. The rate will stay the same.
B. The rate will decrease.
C. The rate will increase.
Answer:
c
Explanation:
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Explain how a leaf obtains water for photosynthesis
Answer:
Leaves obtain water for photosynthesis from the air and the soil.
the serous membranes that surround the lungs are called the group of answer choices synovial membranes. pulmonary membranes. mucous membranes. pleural membranes. peritoneal membranes.
The serous membranes that surround the lungs are called The pleural membrane.
What is pleural membrane?The pleura membrane is a serous membrane that folds on itself to form a two-layered membranous pleural sac.The outer layer is known as the parietal pleura and attaches to the chest wall. The inner layer, called the visceral pleura, covers the lungs, blood vessels, nerves, and bronchi. The pleura membrane consists of two thin layers of tissue that protect and cushion the lungs. The lining (the visceral pleura) wraps around the lungs and adheres to the lungs so that it does not peel off. The outer layer forms the inside of the chest wall. The pleura membrane, like the pistons in the cylinders of an engine, secretes a lubricating fluid that allows them to move freely relative to each other during ventilation. Without this fluid, breathing can be very difficult and even painful.To learn more about pleural membrane from the given link :
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The hiv virus attacks only a certain type of white blood cells, and not other cell types. Why?.
HIV virus infects and destroys white blood cells called CD4+ cells. The body can no longer defend itself against infection if too many CD4+ cells are destroyed.
What is HIV?
HIV, human immunodeficiency virus, attacks the body’s infection fighting cells, which makes a person vulnerable to diseases and infections. More specifically, HIV attacks the white blood cells called the CD4+ cells.
There is no effective cure for HIV, so once you contract the virus, it stays for life. There is, however, an effective treatment with HIV medicine. But, if left untreated, HIV can lead to AIDS, acquired immunodeficiency syndrome.
AIDS is the last stage of HIV. This occurs when the immune system of the body is badly damaged.
A person is said to have progressed to AIDS from HIV when their CD4 cell number falls below 200 per cubic ml of blood.
Therefore, HIV virus infects and destroys white blood cells called CD4+ cells. The body can no longer defend itself against infection if too many CD4+ cells are destroyed.
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all organisms have , which determines everything from an organisms shape to its life functions
Using the theories of life functions, we got that cell which all organisms have , and which determines everything from an organisms shape to its life functions.
All organisms are actually made up of one or more cells. Actually, Cells aggregates so that they can form tissue, tissue actually organize to form the organs and organs system and finally body of the living organism. Cells are actually responsible for all metabolic activities in living organism.
Hence, all organisms have , which determines everything from an organisms shape to its life functions is cell.
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which of the following is an acceptable definition of an adaptation among biologists? which of the following is an acceptable definition of an adaptation among biologists? a phenotypic variant that results in the highest fitness among a specified set of variants in a given environment. a derived character that evolved in response to a specific selective agent. a trait that evolved by natural selection for a particular function (because it increases fitness) from an ancestor that did not have that trait. all of these are acceptable definitions.
The most acceptable definition of adaptation among biologists is: a trait that evolved by natural selection for a particular function (because it increases fitness) from an ancestor that did not have that trait.
Adaptation is the phenomenon of an organism adjusting to its surrounding and changing environment. This adaptation may or may not increase the fitness of the individual. Sometimes the adaptations are only to maintain the living of the organism.
Natural selection is the phenomenon of evolution where the organisms that adapt to the changing environment are able to survive better and longer than the organisms those are not able to do so.
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All of the following factors influence the economy of a society except for which one?
*
1 point
needs & wants of people
available resources
supply & demand
healthcare available
Answer:
Economists generally agree that economic development and growth are influenced by four factors: human resources, physical capital, natural resources, and technology. Highly developed countries have governments that focus on these areas.
Why might stem cells from human embryos be more useful than stem cells from adults.
It's possible that adult stem cells are less adaptable and durable than embryonic stem cells. The potential for using adult stem cells to cure diseases is constrained by the fact that not all cell types can be produced from adult stem cells.
Most scientists and researchers believe that embryonic stem cells could be used to treat a variety of conditions, including multiple sclerosis, diabetes, Parkinson's disease, cancer, Alzheimer's disease, heart disease, hundreds of uncommon immune system and genetic abnormalities, and spinal cord injuries.
In addition to being more adaptable than adult stem cells, embryonic stem cells are also simpler to cultivate in a lab.
As a result, we might conclude that adult stem cells may not be able to be modified to produce all cell types, which restricts their use in the treatment of disease. because adult stem cells are less helpful than stem cells from human embryos.
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where is the chloroplast location?
Answer:
Chloroplasts are commonly found in guard cells located in plant leaves, roughly 1–2 μm thick and 5–7 μm in diameter.
epigenetics refers to the: question 47 options: study of the mechanisms that control gene expression and its effect on behavior and health. study of harmful agents or substances that can cause malformation or defects in an embryo or fetus. study of karyotypes and the contribution of chromosomes to the development of genotypes. scientific study of the complete set of dna in the human organism
Epigenetics is the study of how your behaviors and environment can cause changes that affect the way your genes work.
The field of study known as epigenetics is concerned with heritable changes in gene expression that do not entail alterations to the DNA's base sequence. Literally translated, it means above genomes.
Scientists and academics have been investigating how DNA influences human behavior and society. The field of study known as epigenetics accurately describes how an individual's environment affects how their genes are expressed.
Epigenetics can be regarded as the study of how behaviors as well as environment of individuals can bring changes that affect the way in which their genes work.
Unlike genetic changes, epigenetic changes can be reversed because it doesn't change the DNA sequence. So using DNA structure, genetic changes can be explained unlike epigenetics.
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the superior esophageal sphincter is closed during inhalation of air, so that air doesn't enter the and enters the and trachea instead.
When a person breathes in, the sphincter contracts and closes, preventing air from going into the esophagus and instead allowing it to go into the larynx and the trachea.
What is superior esophageal sphincter?
The term "upper esophageal sphincter" (UES) refers to the area of the esophagus that is located between the pharynx and the cervical esophagus and has a higher pressure than the rest of the esophagus. This sphincter's function in the body is to defend against the backflow of food into the airways while also preventing air from entering the digestive system. It does this by acting as a barrier.
Acid that has flowed back into the esophagus can be able to enter the throat if the upper esophageal sphincter is damaged.
Therefore, the the superior esophageal sphincter is closed during inhalation of air, so that air doesn't enter the esophagus and enters the larynx and trachea instead.
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If a drug that specifically prevented the interaction of cytochrome c with other proteins was added to respiring mitochondria in a test tube, what effects would be observed?.
The cell won’t be able to completely oxidise glucose if an additive molecule that hinders the electron transport chain is applied. As a result, less oxygen is consumed.
When complex I is inhibited by antimycin A, electron transport from complexes or flavoproteins containing FADH2 to cytochromes is prevented.In this instance, the initial Complex Ill constituents are completely reduced and the subsequent constituents are oxidised. The final complex of eukaryotic oxidative phosphorylation in mitochondria is called cytochrome c oxidase. This process combines the reduction of electron carriers during metabolism with the reduction of molecular oxygen to water as well as the transfer of protons from the inner matrix of the mitochondria to the intermembrane gap.Adenosine triphosphate, an energy-carrying molecule, is present in the cells of all living things (ATP). ATP stores the chemical energy produced by the disintegration of food molecules before releasing it to drive other cellular processes.Cells often require chemical energy for three types of tasks: driving metabolic activities that wouldn’t occur naturally; transferring required materials across membranes; and doing mechanical work, like flexing muscles.
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Which three of the following best describe what would happen if mitosis did not take place?.
Organisms would be single-celled. Asexual reproduction would not occur.
Body tissues would not repair
themselves are the best which describes what would happen if mitosis did not take place.
Mitosis refers to the procedure of cell
division, in which a cell goes through a
carefully mediated nuclear division, which results in the production of two genetically similar daughter cells. The mitosis comprises five active stages, that is, prophase, premetaphase, metaphase, anaphase, and telophase. In a single-celled species like an amoeba, it
is the process of mitosis by which the cells reproduce. After undergoing through the five stages of mitosis, it is via the procedure called cytokinesis, the single cell dissociates into two similar cells, thus, completing the reproduction.
During injury, the process of mitosis takes place to substitute the damaged cells. This repair is mainly essential for the blood vessels and skin that safeguards the organs and muscles in the body. Mitosis also assists to substitute the lost blood via a wound.
Thus, if the process of mitosis would not
take place, then the organism would
remain a single-cell, asexual reproduction single-cell, asexual reproduction would not take place, and the tissues single-cell, asexual reproduction would not take place, and the tissues of the body would not be able to repair single-cell, asexual reproductionwould not take place, and the tissuesof the body would not be able to repairthemselves.
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Complete question:
Which three of the following best describe
what would happen if mitosis did not take
place?
A. Organisms would be single-celled.
B. Chromosomes would not duplicate.
C. Asexual reproduction would not occur.
D. Body tissues would not repair
themselves.
E. The production of gametes would not
Occur.
Compared to the cell in g1, the number of chromosomes in one cell _______ after the s phase and _______ after the m phase.
Compared to the cell in G1, the number of chromosomes in one cell is 14 after the S phase and 14 after the m phase.
A cell's growth and division are governed by a series of events known as the cell cycle. The majority of a cell's time is spent in interphase, where it grows, replicates its chromosomes, and gets ready for cell division. After that, the cell enters mitosis, completes its division, and leaves interphase.
In the G1 phase, the cell synthesizes, and in the S phase, DNA replication, the cell cycles in the order G1–S–M.
In the beginning, there were 14 chromosomes in the G1 phase.
The number of chromosomes does not change during the S phase. Thus, there are once more 14 chromosomes.
Again, there is no change at the beginning of the M phase.
Thus, the cell will have the chromosome number at G1, after S, and after M stage individually are
14,14,14.
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(complete question)
Compared to the cell in g1, the number of chromosomes in one cell _______ after the s phase and _______ after the m phase. if it has 14 chromosomes at the beginning of interphase?
in a particular plant, green seed color is dominant to blue. if two plants with green seeds were crossed and resulted in 302 green and 98 blue seed plants, what was the most probable genotype of each parent?
If two plants with green seeds were crossed and resulted in 302 green and 98 blue seed plants, then the most probable genotype of each parent will be heterozygous since 3:1 phenotypic ratio is the result we can observe for a monogenic trait in a Punnett square.
What is a Punnett square?A Punnett square is a diagram used in genetics to estimate genotype and phenotypic frequencies after a cross, which may be monogenic or include more than a single gene.
In this case, the cross is between two heterozygous individuals for a monogenic trait that exhibits complete dominance, it is the reason for which we can see a proportion 3:1 in the phenotypic ratios in a Punnett square.
Therefore, with this data, we can see that a Punnett square can be used to determine the phenotypic ratios, which are statistically close to the observed in this example to a 3:1 ratio.
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arrange these taxonomic terms from most inclusive (most general) to least inclusive (most specific). 1. tetrapods 2. animals 3. amniotes 4. vertebrates 5. deuterostomes
deuterostomes → vertebrates → animals→ tetrapods → amniotes
taxonomic terms from most inclusive (most general) to least inclusive (most specific).
What does biological classification entail?
Taxonomic ranks are used in biology to categorize organisms. These ranks include, among others (in order from most inclusive to least inclusive): Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species, and Strain.
Taxonomy is the science of categorization in the broadest sense, but it is more specifically the classification of living and extinct creatures, or biological classification.
Therefore, Domain (most inclusive), kingdom, phylum, class, order, family, genus, and species make up the taxonomic hierarchy from most to least inclusive.
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