Amino acids are linked together by glycosidic bonds to form proteins
1.True
2.False
2
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The "undershoot" phase of after-hyperpolarization is due to _____
A) slow opening of voltage-gated sodium channels B) sustained opening of voltage-gated potassium channels C) rapid opening of voltage-gated calcium channels D) slow restorative actions of the sodium-potassium ATPase E) ions that move away from their open ion channels
Which factor has the greatest effect on the amount of
incoming light that strikes an area? a. latitude b. temperature c. humidity d. the ozone layer e. wind pattern
Which hormone acts on the Sertoli cells to help sperm mature?
a. testosterone b. FSH c. LH d. GnRH e. hCG
The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elongated cells, they usually have lengths and diameters in the range of:
A) 0.1 µm to 10 µm. B) 0.3 µm to 30 µm. C) 0.3 µm to 100 µm. D) 1 µm to 100 µm. E) 1 µm to 300 µm