What is the primary reason for the occurrence of mercury in the human body?
a. It is biologically inactive and dormant.
b. It provides vital biological functions in trace amounts.
c. It is needed to kill bacteria.
d. It is a byproduct of cellular function.
e. It is consumed through seafood.
ANSWER: e
You might also like to view...
If you wanted to cause the extinction of an entire phylum, you would need to kill every cycad.
Indicate whether the statement is true or false.
During a particular period of physiological crisis, imagine that your carbon dioxide levels increase sharply, and consequently your blood pH decreases. Predict what will happen to the affinity of your hemoglobin for oxygen in this situation.
A. The affinity for oxygen by hemoglobin will increase. B. The affinity for oxygen by hemoglobin is constant-it does not change. C. The affinity for oxygen by hemoglobin will decrease.
If the hydrogen ion concentration of ammonia is 0.00000000001 mol/L, then what is its pH value?
a. 1 b. 10 c. -10 d. 11 e. -11
An important difference between mRNA and DNA is:
a) DNA can move throughout the cell, while mRNA stays in the nucleus. b) mRNA contains uracil instead of adenine, which is found in DNA. c) mRNA can move outside of the cell, while DNA stays inside the cell. d) mRNA can move throughout the cell, while DNA stays in the nucleus. e) mRNA can move throughout the cell, while DNA stays in the cytosol.