Endocytic events ________.
A. remove membrane from the cell surface
B. have no effect on the plasma membrane
C. change the membrane composition
D. add membrane to the cell surface
Answer: A
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Genetic testing (select all correct choices):
A. will identify every allele of every gene you carry. B. will tell you whether or not you will contract breast cancer or Type II diabetes. C. will identify some alleles of some of your genes. D. will identify every risk factor you have for the most common types of cancer as well as for cardiovascular disease. E. none of these.
Sponges move huge volumes of water through their bodies every day
Although this serves the function of filter feeding for the organism, how might this also provide an "ecosystem" service (something that affects and/or benefits other organisms in their environment)? A. They can filter small poisonous fish out of the water that may harm other organisms. B. They create small currents in their microenvironment that help to circulate and clean water locally for other organisms. C. They produce large numbers of gametes that will become food for other sponges.d. Their body chambers serve as places where smaller organisms can live and be protected from certain predators.
Which is NOT a major function of proteins?
A. Provides cell structure. B. Stores energy for the cell. C. Functions as regulator molecules in cellular activity. D. Functions as carrier molecules.
Which binds to the operator of the lac operon?
A) permease B) beta galactosidase C) activator D) repressor E) lactose