In human prenatal development, cleavage occurs in the ____
a. cervix
b. upper part of the uterus
c. vagina
d. oviduct
e. ovary
ANSWER: d
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What would be the most direct result of an individual having an inability to produce surfactant in their alveoli?
A. The alveoli would physically collapse. B. The alveoli would be much more likely to harbor infections. C. The alveoli would fill with fluid due to an ion transport defect. D. Oxygen exchange with the blood would be impaired due to a thickening of the epithelium. E. Carbon dioxide exchange with the blood would be impaired due to an inhibition of carbonic anhydrase.
The acidity of acid rain will cause soil particles to release the metal ion ________
a. calcium b. iron c. hydrogen d. sodium e. aluminum
The hypothalamus and thalamus are in the _______ of the brain.
Fill in the blank(s) with the appropriate word(s)
Ferns and mosses are similar because both
A) produce drought-resistant seeds. B) have dominant sporophytes. C) have flagellated sperm. D) have sporophytes that produce diploid spores.