In the context of the free-radical theory of aging, which of the following best describes the action of antioxidants?
A. They increase the muscle mass and help burn calories.
B. They increase the hemoglobin count in the circulatory system.
C. They counteract the cell damage caused by free radicals.
D. They generate a large number of white blood cells to fight off pathogens.
Answer: C
You might also like to view...
Which ability most contributes to the strength and endurance of the human species?
a. ?our ability to take full advantage of our physical equipment b. ?our ability to communicate, work together, and form alliances c. ?our ability to trust and be trusted d. ?our ability to instill fear in our enemies
Tim believes that sleep is one continuous state of consciousness. Is Tim right?
a. Yes—sleep is made up of non-REM consciousness b. Yes—sleep is made up of REM consciousness c. No—sleep is made up of several states of body arousal and consciousness d. No—sleep is made up of REM and Non-REM consciousness
Appropriate table manners suggest that you place your napkin in your lap as soon as you are seated and your silverware on your plate when you finish eating.
Answer the following statement true (T) or false (F)
What are some of the brain areas with the greatest concentration of cannabinoid receptors?
a) pons, hippocampus, and occipital lobes b) thalamus, hypothalamus, and pituitary c) cerebellum, basal ganglia, and hippocampus d) corpus callosum, frontal lobes, and reticular formation