Darwin observed that
A. organisms in a normal population differ in reproductive success.
B. members of a population vary in their functional, physical, and behavioral characteristics.
C. there is a constant struggle for survival of organisms.
D. All of the choices are correct.
E. None of the choices are correct.
Answer: D
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Which of the following was produced in experiments on primitive Earth conditions conducted by Miller-Urey and others?
A. ammonia and water B. amino acids C. CO2 and H2O D. ammonia and hydrogen sulfide E. methane and oxygen
Which of the following forms of Plasmodium
carried by an infected mosquito infects humans?
a. merozoites b. gametocytes c. cysts d. sporozoites e. spores
Which complex organic molecule is a major product of the Calvin cycle?
a. ATP b. CO2 c. rubisco d. G3P
Consider a tadpole becoming a toad. You would expect to find it changing its form of nitrogenous waste from
A. urea to uric acid. B. ammonia to urea. C. uric acid to urea. D. uric acid to ammonia. E. urea to ammonia.