Thirty patients with acne volunteer to be treated with either a medicinal lotion
or a normal moisturizing cream. this type of experimental design is called
a(n)
a. in vitro observation
b. clinical trial
c. geographical cohort study
d. general population survey

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

In the presence of oxygen, glycolysis is followed a. the krebs cycle b. lactic acid fermentation c. alcoholic fermentation d. photosynthesis

Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things