You recently identified a novel protein that contains several membrane-spanning domains. You would predict that the amino acids embedded in the membrane would have ________ side groups.
A. polar uncharged
B. positively charged
C. nonpolar
D. negatively charged
Answer: C
You might also like to view...
Which of the following characteristics distinguished T cells from B cells?
A. B cells produce immunoglobulin while T cells do not. B. B cells originate in the bone marrow while T cells do not. C. B cells form memory cells while T cells do not. D. B cells are lymphocytes while T cells are not.
Which of the following is an example of positive feedback?
A) After eating a meal containing high glucose levels, the pancreas secretes more insulin, a hormone that lowers blood glucose levels. B) After cutting your finger, the injured tissue releases chemicals that activate platelets in the blood. These activated platelets release chemicals to activate more platelets, leading to the formation of a blood clot. C) An elevation in blood pressure causes heart rate to decrease, thereby causing blood pressure to decrease. D) The secretion of the hormone TSH stimulates the thyroid gland to secrete thyroxine. Thyroxine, in turn, inhibits the secretion of TSH.
Grocott-stained sections show reticulin and red cells stained black. This most likely is the result of:
a) overimpregnation b) prolonged oxidation c) poor deparaffinization d) inadequate toning
Asexual reproduction can involve all of the following processes EXCEPT
a. fission. b. fertilization. c. fragmentation. d. budding. e. parthenogenesis.