The monitoring of blood oxygen levels within the body is done by what type of receptor?
Select one:
a. thermoreceptor
b. chemoreceptor
c. mechanoreceptor
d. photoreceptor
e. proprioceptor
b. chemoreceptor
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Many ribosome-inactivating proteins are not a
problem for humans because
a. we have enzymes to detoxify them. b. they are very rare in nature. c. they are sequestered by white blood cells. d. they are rapidly metabolized. e. they do not cross cell membranes very well
The movement of water through a membrane is dependent on
a. the concentration of solute. b. channel proteins. c. the extent of packing of the phospholipids. d. active transport. e. endocytosis.
Genetic involvement in development appears to be achieved, at least in part, by variable gene activity
Indicate whether the statement is true or false
How many liters of water does an average human need to replace each day by consuming food or drink?
A) 1 B) 2 C) 3 D) 4