Which ion uses active transport pumps to "push" more of it into the cell?
A. Glucose
B. Sodium
C. Potassium
D. Water
Answer: C
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Human chorionic gonadotropin is
a. secreted from the corpus albicans b. secreted from the developing placenta c. at its highest level within the first two months of gestation d. both a and c e. both b and c
Which of the following would increase the thickness of bone?
a. lack of mechanical stress b. continuous mechanical stress c. intermittent mechanical stress d. all of the above
Neural signals about oxygen levels in the blood come from
A. osmoreceptors in the hypothalamus. B. oxygen receptors in the primary respiratory center. C. chemoreceptors in the carotid and aortic bodies. D. baroreceptors in the aorta and carotid arteries. E. hemoglobin detectors in the pons.
Water is freely permeable through all cell membranes
Indicate whether the statement is true or false