Phosphorus is an essential element in all living things and is a component of

A. ATP and DNA.
B. most amino acids.
C. nearly all vitamins.
D. carbohydrates.


Answer: A

Biology & Microbiology

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When a "new" antigen first challenges the immune system, if the primary immune response produces B cells, what are the fates of those B cells?

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The variable(s) in the 2005 peacock butterfly experiment is(are) the ____

a. butterfly wings pattern color b. butterfly species c. butterfly wings pattern color and sounds emitted d. rainforest region used e. percentage of survivors

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Depletion of clotting proteins from the serum leads to the uncontrollable hemorrhaging seen in ________ infections

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Biology & Microbiology