Myosin protein forms the thin and light filament in skeletal muscle.
a. true
b. false
False
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Proteins are polymers of ____
a. amino acids b. monosaccharides c. steroids d. nucleotides e. phospholipids
Arrange the following from the ecosystem with the smallest average NPP to the ecosystems with the largest NPP
1) lake 2) savannah 3) estuary 4) tropical rain forest 5) open ocean a. 1, 2, 3, 4, 5 b. 2, 1, 4, 3, 5 c. 2, 1, 5, 3, 4 d. 5, 2, 1, 3, 4 e. 5, 1, 2, 3, 4
During respiratory exchange, carbon dioxide moves from the blood into the alveoli due to:
a. the presence of a permease, which removes carbon dioxide from the capillaries. b. potassium cotransport. c. diffusion down a concentration gradient.
d. the air pressure of dissolved oxygen, which forces it out. e. the contraction of the diaphragm, which creates a vacuum that pulls it out.
Two sea urchin proteins were named cyclin A and B because, during the embryonic cell cycle, they were periodically
a. activated and inactivated by phosphorylation and dephosphorylation. b. synthesized and degraded. c. bound and released by another protein. d. ubiquitylated and non-ubiquitylated.