In a sarcomere, thick filaments are linked laterally by proteins of the
A) Z line.
B) M line.
C) H band.
D) A band.
E) I band.
Answer: B
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Which is TRUE about the Na+, K+ ATPase pump in neurons?
A. It maintains an electrical gradient at the equilibrium potential of K+. B. It pumps 3 Na+ ions into the cell for every 2 K+ ions it pumps out. C. It transports equal numbers of sodium and potassium ions with each pump cycle. D. It maintains a concentration gradient for K+ such that diffusion forces favor movement of K+ into the cell. E. It generates a small electrical potential such that the inside is made negative with respect to the outside.
About how much of the oxygen content of arterial blood consists of oxygen molecules in solution?
A) 50% B) 25% C) 10% D) 5% E) 1.5%
What type of joint is the carpus? What movement does it allow?
What will be an ideal response?
Straight hair is round, wavy hair is oval, and curly hair is relatively flat
Indicate whether the statement is true or false