A stroke is a rupture of a blood vessel in the
a. leg.
b. lung.
c. brain.
d. internal organs.
e. heart.
Answer: c. brain.
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How many intervertebral discs are there? (Note: Be sure your answer is a numeral, e.g. "5" vs "five").
Fill in the blank(s) with the appropriate word(s).
The uterine tubes are covered and suspended by a superior portion of the broad ligament called the ________.
Fill in the blank(s) with the appropriate word(s).
Bile pigment is a derivative of ________.
A. cholesterol B. heme group without iron C. iron D. globin part of hemoglobin
A researcher engineers a deletion in the genome of sperm cell DNA that inhibits production of an enzyme in the sperm cell membrane. The researcher then adds the sperm to a culture dish with a secondary oocyte, along with chemicals to guide the sperm to the oocyte. Upon observation, it is found that the sperm fails to penetrate the corona radiata of the oocyte. What enzyme has been deleted from the sperm membrane?
A. Juno B. Catalase C. Acetylcholinesterase D. Hyaluronidase