A dangerous form of food poisoning is caused
by
a. Clostridium botulinum.
b. Clostridium tetani.
c. Bacillus anthracis.
d. Heliobacter pylori.
e. Thermus aquaticus.
A
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The complete genetic composition of an organism is called its
A. proteome. B. genome. C. transcriptosome. D. phenotype. E. None of these choices are correct.
Sarin gas is an inhibitor of an enzyme that functions in the neuromuscular junction to break down acetylcholine. What is the most likely description of how a person would die after inhaling this poisonous gas?
A. Paralysis of skeletal muscles B. Epileptic convulsions caused by disorganized electrical activity in the brain C. Suffocation via paralysis, or a block in stimulation, of the respiratory muscles D. Suffocation via tetanus, or constant stimulation, of the respiratory muscles E. By a heart attack
Decomposers
A. break down dead organic matter in the environment by secreting digestive enzymes. B. break down living organic matter by secreting digestive enzymes. C. destroy living cells and then break them down with digestive enzymes. D. live in close association with another species.
Refer to Figure 5-1. Which of the following statements about the red blood cells in Figure A is true?
a. There has been no net water movement.
b. There has been a net flow of water out of the cell.
c. There has been a net flow of water into the cell.
d. Pinocytosis has occurred.
e. Plasmolysis has occurred.