An example of an irreversible inhibitor is

A) a competitive inhibitor.
B) angiotensin converting enzyme (ACE) inhibiting drugs.
C) a noncompetitive inhibitor.
D) penicillin.
E) isoleucine.


Answer: D

Biology & Microbiology

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Which of the experiments below would provide the best data set with which to test the hypothesis that female chimpanzees have a greater influence on the vertical transmission of culture than males?

A. Measure the amount of time that young chimps spend with each of their parents, and measure the rate at which they acquire cultural traits. B. Measure the amount of time young chimps spend with their mother only, and measure the rate at which they acquire cultural traits. C. Measure the amount of time young chimps spend with their father only, and measure the rate at which they acquire cultural traits. D. Train a wild chimp to use a new food source, and document how quickly this knowledge spreads to the rest of the population. E. Introduce a new food source to a population and see which chimps learn how to use it first.

Biology & Microbiology

Which type of ecosystem is found on less than 2% of the Earth’s surface?

a. freshwater ecosystem b. terrestrial ecosystem c. marine ecosystem d. temperate ecosystem

Biology & Microbiology

All vertebrates have _____

a. an open circulatory system c. lungs b. a two-chambered heart d. none of these

Biology & Microbiology

In the Beadle and Tatum study, it was important that Neurospora was haploid because:a

it is easier to grow haploid molds in the laboratory. b. haploid molds have simpler nutritional requirements than do diploid molds. c. a mutation that arises is not masked by a normal allele on a homologous chromosome. d. haploid Neurospora will always mutate. e. diploid Neurospora will always mutate.

Biology & Microbiology