I think that both the dialysis tubing and the small intestine are selectively permeable. Which means they allow only some and not all materials to pass through; for example; glucose which is a simple molecular sugar; will pass through, however larger molecules such as starch can not pass through. A dialysis tube is a semipermeable membrane that allows molecules of certain size to get in or out, while keeping molecules above that size in. They are often used to remove impurities from preparations of proteins or other macromolecules and also to normalize pH of a preparation.
"A section of DNA that usually contains the code for a specific protein that determines a specific trait is a gene, while an allele is a section of a gene" is the statement that <span>best describes the difference between a gene and an allele. The correct option among all the options given in the question is option "A".</span>
Answer:
Number of Organisms at the level of producers (First level) is more and hence the availability of energy also will be more at the level of producers. Amount of energy available decreases as we you move from the level of producers to the top carnivores.
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Answer:
The theory of evolution is supported by instances of direct observation, the existence of homologies and fossils, and certain biogeographical patterns
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Yes,all fossils contain intact DNA that can be sequenced
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