Identify the location of the disulfide bond in the figure, located at the bottom of the third transmembrane segment. What is the name of the amino acids that are forming this bond?
A) cytosine
B) aspartic acid
C) cysteine
D) glycine
Answer: C
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Viral envelopes can best be analyzed with which of the following techniques?
A) use of 15N to label specific nucleotides B) antibodies against specific proteins not found in the host membranes C) DNA staining and visualization with the light microscope D) use of plaque assays for quantitative measurement of viral titer E) immunofluorescent tagging of capsid proteins
For osmosis to occur, ____
a. a selectively permeable membrane must be present b. a concentration gradient cannot exist c. cellular energy must be expended d. pure water must be on one side of the membrane e. only solutes can pass through the membrane
The number of neutrons for the atom depicted in the figure is
a. 5. b. 7. c. 8. d. 15. e. 22.
Diabetes mellitus type 2 (DM2 ) is partly hereditary and, if uncontrolled, can lead to kidney disease and heart failure and an increased risk of stroke and blindness. From this information alone, you could say that DM2 is an example of ________
A) codominance B) polygenes C) pleiotropy D) epistasis