Individuals in the population grouped according to levels of maturity define the population's ____
a. carrying capacity
b. age structure
c. density
d. size
e. birth rate
ANSWER: b
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Nearsightedness is also called
a. myopia. b. hyperopia. c. presbyopia. d. none of the above.
In which tissue system of plants would you expect to find the guard cells?
A) Dermal tissue system B) Vascular tissue system C) Germ tissue system D) Ground tissue system
Select all of the following that are true about cephalopods.
A. They are very intelligent and are capable of learning by observation. B. They have a closed circulatory system C. They lack a shell. D. They are exclusively herbivorous. E. They may be very large and can weigh over 1000 pounds.
Connor decides to celebrate his 21st birthday by drinking a few beers at a local sports bar. After a while, Connor notices that he is making many more trips to the men's room than the week before when he drank similar amounts of carbonated water. Why is that?
A. Alcohol inhibits reabsorption of sugars, amino acids and other small metabolites, which decreases reabsorption of water. B. Alcohol stimulates secretion of ions into the nephron and water follows by osmosis. C. Alcohol inhibits the secretion of ADH by the posterior pituitary gland, thereby decreasing water reabsorption. D. Alcohol stimulates filtration of the blood plasma by the glomeruli. E. Alcohol stimulates the insertion of aquaporins into the plasma membranes of cells that line the collecting ducts, thereby decreasing water reabsorption.