Does altering the permeability characteristics of the membrane change the direction of solute movement?
a. Yes
b. No
b
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Which of the following terms represents a cell that can form any other cell of the organism?
A. Pluripotent B. Totipotent C. Unipotent
Which of the following statements about the electron transport chain in cell respiration is CORRECT?
A. Electrons move from NADH to a chain of proteins with lower electronegativities. B. The electron transport chain of proteins uses ATP to pump H+ across the inner mitochondria membrane against its electrochemical gradient. C. The loss in free energy of the electron initially donated by NADH is used to transport H+ across the inner mitochondrial membrane against its electrochemical gradient. D. The electron transport chain of proteins contains pores that are leaky to H+. E. The ATP synthase pump generates a H+ gradient across the inner mitochondrial membrane.
How many calories, as defined in chemistry, are in one calorie, which is the unit used to quantify the amount of
energy in the food we eat?
a. 10 b. 100 c. 1,000 d. 10,000 e. 100,000
Most of the oxygen in the blood is transported by ____
a. erythropoietin b. prothrombin c. platelets d. hemoglobin e. leukocytes