Regulation of metabolism uses feedback inhibition. Describe how this type of mechanism regulates the production of ATP
What will be an ideal response?
Sometimes the levels of ATP are sufficient in the cell so that the cell does not need to produce more ATP for a while. When this occurs, ATP binds to a special regulatory site on a specific enzyme involved in an early step in glycolysis. This binding inactivates the enzyme. Without the action of the enzyme, glycolysis stops and no more ATP is produced. When the ATP levels drop, the ATP no longer binds, the enzyme is now active and glycolysis begins again.
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Cheetahs have been through a genetic bottleneck; evidence for this is that
A. the body is long, thin, and graceful. B. these cats are members of an endangered species. C. there is very little genetic variability. D. little natural selection occurs in this species. E. they originally came from small areas of Africa.
Would meiosis, when it was discovered, have been understood without Mendel's work? Explain why
or why not, using Mendel's three key findings about inheritance.
What will be an ideal response?A grassland biome
A. consists of mostly coniferous trees. B. has nutrient-rich soil. C. has a long growing season. D. is warm and dry. E. consists of moss and lichen.
Arrange these structures of the human male reproductive tract according to the order in which sperm pass through them, with the structure that produces sperm at the top.