#Question id: 21142
#Unit 12. Applied Biology
#Question id: 5291
#Unit 8. Inheritance Biology
A number of nutritional mutant strains were isolated from wild-type Neurospora that responded to the addition of certain supplements in the culture medium by growth ( + ) or lack of growth ( -). Given the following responses for single gene mutations, diagram a metabolic pathway that could exist in the wild-type strain that is most consistent with the data. Indicate where the pathway is blocked in each mutant strain.
#Question id: 1158
#Unit 4. Cell Communication and Cell Signaling
Muscarinic acetylcholine receptors are GPCRs that slow the rate of heart muscle contraction upon ligand binding/activation. Activation of this receptor leads to opening of potassium channels triggered by decreases in cAMP levels. The muscarinic acetylcholine receptor likely couples to:
#Question id: 1818
#Unit 4. Cell Communication and Cell Signaling
Which of the following is the single best defining molecule on, or in, a B-cell?
#Question id: 31125
#Unit 2. Cellular Organization