#Question id: 1230
#Unit 4. Cell Communication and Cell Signaling
Which of the following events occur(s) following the binding of a ligand to a G protein–coupled receptor that triggers release of Ca2+?
a. activation of protein kinase A by IP3
b. phospholipase cleavage of PIP2 to IP3 and DAG
c. release of DAG into the cytosol
d. IP3-mediated opening of Ca2+ channels in the ER membrane
#Question id: 4745
#Unit 8. Inheritance Biology
In some goats, the presence of horns is produced by an autosomal gene that is dominant in males and recessive in females. A horned female is crossed with a hornless male. The F1 offspring are intercrossed to produce the F2. What proportion of the F2 offspring will have horns?
#Question id: 869
#Unit 1. Molecules and their Interaction Relevant to Biology
Which statements are correct regarding protein folding
A. Many molecular chaperones were first described as heat shock proteins (Hsp) because Their rate of synthesis is increased at elevated temperatures
B. The renaturation of a denatured protein in vitro may not entirely mimic the folding of a protein in vivo.
C. Molecular chaperones are essential proteins that bind to only partially folded polypeptide chains.
D. Molecular chaperones function to lift folding polypeptides out of the false minima in their folding funnel.
#Question id: 11369
#Unit 9. Diversity of Life Forms
If new genetic variation in the experimental populations arose solely by spontaneous mutations, then the most effective process for subsequently increasing the
prevalence of the beneficial mutations in the population over the course of generations is
#Question id: 188
#Unit 1. Molecules and their Interaction Relevant to Biology
Active holoenzymes are formed from ________ in the presence of ________.