To conserve precious salts, freshwater fish
A) drink large amounts of water and produce small amounts of urine.
B) drink almost no water and produce large amounts of dilute urine.
C) excrete salt ions and small amounts of urine.
D) consume salt ions in food and eliminate water by osmosis.
Answer: B
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Based on hierarchical classifications and features, which statement about humans is true?
a. Humans are deuterostomes. b. Humans are acoelomates. c. Humans are diploblasts. d. Humans are asymmetrical.
The proportion of white muscle fibers to red muscle fibers in sprinters is likely to ____
a. be lower than in marathon runners b. be higher than in marathon runners c. be equal to that in marathon runners d. depend most on the sex of the sprinter e. depend most on the age of the sprinter
If a woman has reached or passed her due date (the date that a woman is expected to give birth), her obstetrician may use hormones to help initiate labor. Which of the following hormones would assist the most in the initiation of labor?
A) HCG B) FSH C) progesterone D) oxytocin
When your body temperature is too __________, __________ helps to correct the situation because it __________.
a. high; sweating; lowers the metabolic rate by dumping toxins b. high; peripheral vasodilation; redirects heat from the body core to the environment c. low; peripheral vasodilation; conserves heat in the body core d. low; shivering; lowers the metabolic rate and conserves blood sugar e. None of the listed responses is correct.