In a hypotonic solution, what happens to mammalian cells such as red blood cells?
a. shrink due to water loss
b. stay the same size due to water moving in and out at the same rate
c. swell due to water gain
d. apoptosis
c. swell due to water gain
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Which one of the following most accurately describes the ratio of oxygen to carbon to hydrogen in a simple sugar such as glucose?
A. 1 : 2 : 1 B. 1 : 1 : 2 C. 2 : 1 : 1 D. 1 : 2 : 3 E. 1 : 3 : 2
A decline in the production of melatonin, which is secreted by the _____, begins at puberty
a. pineal gland b. thymus c. adrenal gland d. gonads
In order to arrive at a solution to a problem, a scientist usually proposes and tests
a. laws. b. theories. c. hypotheses. d. principles. e. facts.
Schizophrenia and bipolar disorder are caused by _____
a. one gene, plus environmental triggers b. the same gene c. many genes, plus environmental triggers d. copy number variants, without environmental triggers e. the same mutations that cause autism spectrum disorders