For the following list of anti-HIV drugs and their mechanism of action, identify the mismatch.
A. AZT (azidothymidine); as an analog of thymidine, it is incorporated into viral RNA in place of thymidine
B. Protease inhibitor; blocks the active site of the protease required for assembling new viral particles.
C. Reverse transcriptase inhibitor; blocks the active site of the enzyme required to convert viral RNA to DNA
D. Integrase inhibitor; blocks the active site of the enzyme required to splice HIV DNA into the human genome
Answer: A
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What do you expect to be the relationship between population size and number of cultural traits?
A. The larger the population, the larger the number of cultural traits. B. The smaller the population, the larger the number of cultural traits. C. There is no relationship between population size and the number of cultural traits.
Which of the following statements about the growth of the human population is correct?
A. None of the answer options is correct. B. The human population has been growing at the same rate since 1800. C. The human population quadruples in size every century. D. The human population has doubled in size in the past 10 years. E. The human population first reached 1 billion in the 20th century.
Match the following names with the correct statements.
_______1. This German scientist proposed the theory of biogenesis—that life can arise only from preexisting life. _______2. This Dutchman built single lens microscopes as a hobby and is believed to be the first person to see live bacteria and protozoa. _______3. This German physician developed a step-by-step scientific method to prove that a particular microorganism causes a particular disease and contributed to what is known as “the germ theory of disease.” _______4. This French scientist discovered that microorganisms are responsible for fermentations, contributed to disproving abiogenesis, and contributed to what is known as “the germ theory of disease.” a. Robert Koch b. Louis Pasteur c. Rudolf Virchow d. Antony van Leeuwenhoek
Many bacteria facilitate the uptake of iron by secreting low molecular weight molecules, called ________, to form complexes with the iron that can then be readily transported into the cell.
Fill in the blank(s) with the appropriate word(s).