Which trophic level forms the base of a food chain?
A. tertiary consumers
B. secondary consumers
C. primary consumers
D. quarternary consumers
E. primary producers
Answer: E
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a. True b. False Indicate whether the statement is true or false
In a population of 2400 long horn sheep, 400 males and 750 females breed each season. What percentage of the actual population is the effective population size?
A. ~48% B. ~43% C. ~27% D. ~65% E. ~17%
How do A-B toxins function?
A) The B domain binds to a target cell receptor, while the A domain has a specific function. B) The B domain acts as a neurotoxin, while the A domain acts as a cytotoxin. C) They bind to the membrane of the host cell, creating a pore. D) The A domain binds to a target cell receptor, while the B domain has a specific function.
Which of the following diseases is considered an emerging disease?
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