Emotional stress, a diet low in fiber and dehydration can lead to which problem associated with the digestive system?
a. Lactose intolerance
b. Diarrhea
c. Constipation
d. Pancreatitis
e. Gallstones
c
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Infants acquire natural passive immunity from maternal antibodies transferred across the placenta or in breast milk
Indicate whether the statement is true or false.
Which of the following statements is true regarding the male urethral biota?
A. The urethral biota in the male is exactly the same biota as in the female urethra. B. The urethral biota is the same as the anal biota. C. There are no resident biota in the urethra. D. The urethral biota varies with sexual activity of the male.
Which of the following is properly matched?
a. osteoblasts; bone breakdown b. osteocytes; initial bone formation c. osteoclasts; initial bone formation d. osteoclasts; bone breakdown e. osteoblasts; imprisoned in bony matrix
Hydrothermal vents are associated with the newest
theory on early cell evolution. Which of the following is a true statement? a. Synthesis of organic material occurs in superheated mineral rich water. b. Iron-sulfide molecules may act as cofactors for organic material production. c. Rock formed under these conditions has small pits about the size of an average cell. d. Under these conditions iron sulfide would donate hydrogen to carbon dioxide to form organics. e. All of these are true.