Which part of the body is likely to be much more diverse in mammals compared to that in other groups?
A) the teeth
B) the structure of the vertebrae
C) the structure of the limbs
D) the jawbone
Answer: A
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In the vertebrate kidney, reabsorption and secretion take place in the renal tubules; after that, the filtrate enters the collecting ducts as ____
Fill in the blank with the appropriate word.
There are how many different kinds of RNA codons?
a. 3 b. 12 c. 28 d. 64 e. 120
When a dolphin consumes a large volume of water and electrolytes, it must be able to get rid of large volumes of water via urine and feces. This is an example of the process of
A) osmoregulation. B) convection. C) thermoregulation. D) countercurrent heat exchange.
All of the following are characteristics of viruses except
A. they can cause mild diseases. B. they can cause fatal diseases. C. they can be crystallized. D. they often have a geometric capsid. E. they have a viscous fluid inside their capsids.