6. Which of the following statements is true? a. Indirect action can be modified by protectors or sensitizers. b. Direct action can be modified by protectors or sensitizers.

What does the author mean with the statement, "Experts hypothesize that the surge in myopia prevalence is caused by the increased use of computers and smartphones, however definitive research has not been published."? A. More research is needed to determine the causes of myopia. B. Computers and smartphones are not a cause of the increase in myopia diagnosis. C. Myopia diagnoses will most likely increase as computer and smartphone use continue.  D. Research studies on the impact of computers and smartphones on eyesight need to be published.

What happens to a fish’s movement speed in colder water? a. The fish swims more slowly. b. The fish swims at the same speed by making each muscle contract more strongly. c. The fish swims at the same speed by recruiting more white muscle fibers. d. The fish swims faster.

Would it be possible to start synthesizing the daughter DNA strand without assembling the RNA primer first? Why? Why not?