What might happen to your red blood cells if you were suddenly unable to regulate the solute concentration of your blood and it began to rise?
A) Your blood cells would stay the same size.
B) Your blood cells would enlarge and could rupture because water would move into the cells via osmosis.
C) Your blood cells would shrivel because water would move out of the cells via osmosis.
D) We don't have enough information to answer this question.
C
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left untreated, syphilis infections go through four stages. The first stage is a sore called a chancre. The signs of the second stage are
A. some nerve damage, loss of some teeth, and perhaps a dimming of color vision. B. very few, with many victims having no symptoms. C. rash, sore throat, and sores in the mouth D. persistence of the chancre and bleeding at the chancre site. E. a yellowish-white discharge from the urethra.
A change in chromosome number during
fertilization can lead to
a. sympatric speciation. b. disruptive selection. c. directional selection. d. hybrid sterility. e. allopatric speciation
Which aquatic ecosystem is known as the
marine nursery?
a. coral reef b. hydrothermal vents c. coral reefs d. estuary e. seamounts
The periodic shedding of blood and tissue from the endometruim in humans is called _________.
Fill in the blank(s) with the appropriate word(s).