#Question id: 1764
#Unit 4. Cell Communication and Cell Signaling
Which of the following is NOT a feature of germinal center B-cells?
#Question id: 1276
#Unit 4. Cell Communication and Cell Signaling
Which of the following does not belong to the major families of cell surface adhesion molecules?
#Question id: 1124
#Unit 4. Cell Communication and Cell Signaling
Which of the following is (are) intracellular second messengers?
a. Ca2+ b. cAMP c. epinephrine
d. protein kinase A e. protein kinase C
#Question id: 667
#Unit 1. Molecules and their Interaction Relevant to Biology
Which represents the backbone of a protein?
Note: R = amino acid side chain
N = nitrogen
Cα = alpha carbon
C = carbonyl carbon
#Question id: 18955
#Unit 13. Methods in Biology