Biology, 24.08.2019 06:00, sarabell9080
When a ligand attaches to a receptor, which of the following occurs first? (consider a ligand to be a hormone or a cell messenger)
a) there is a change in shape of the ligand which causes the signaling cascade
b) there is a change in shape of the receptor which triggers the stopping of the signaling cascade
c) there is a change in shape of the receptor which triggers the beginning of the signaling cascade
d) there is a change in shape of the receptor which causes the ligand to be released
Answers: 1
Biology, 22.06.2019 05:50, lexi1268
The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes
Answers: 2
Biology, 22.06.2019 20:30, ramberson101
How many electrons can occupy any electron orbital?
Answers: 1
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