Which of the following is true of a lysosome?
A) The lysosome may mature from a late endosome.
B) The lysosome may function in glycosylation.
C) The contents of the lysosome originate in the smooth ER.
D) The lysosome functions in export packaging.
E) all of the above
A) The lysosome may mature from a late endosome.
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Why do Rh-negative but not Rh-positive mothers sometimes have babies with hemolytic disease of the newborn?
A. This disease results when an Rh-negative mother's immune system is primed multiple times to produce anti-Rh IgG antibodies that can cross the placenta. If the mother is Rh-positive, she won't produce any anti-Rh antibodies at all. B. Rh-positive mothers produce IgM antibody, not IgG. This antibody can't cross the placenta, so it can't cause hemolytic disease of the newborn. C. Rh-positive mothers will receive a preventative shot from their physician prior to conception. This will provide the protection the fetus needs AFTER conception to avoid the disease. D. Rh-negativity is also associated with hyperproduction of antibodies. As such, Rh-negative mothers are more likely than Rh-positive mothers to produce the antibodies needed to produce this disease.
Which type of medium would be the best choice when shipping a sample of bacteria from a clinic to a laboratory for testing?
A. Blood agar B. Eosin-methylene blue agar C. Thioglycolate medium D. Transport medium
The risk for kidney stones increases in individuals who have a diet high in ________. a. proteins b. All of these choices
c. cellulose d. fats e. carbohydrates
The only gene that has been positively identified with the onset of Alzheimer disease encodes a protein that _____
a. is involved in cholesterol metabolism b. breaks down neurotransmitters c. maintains the health of striatum cells d. attaches amino acids to tRNA molecules e. breaks down fatty deposits around neurons