What is membrane potential?
A.
The rate of ATP production and transport by mitochondria.
B.
The ability of a membrane to actively transport carbohydrates out of the cytoplasm.
C.
The electrical charge difference across the membrane caused by ion movement.
D.
The ability of molecules to pass through the nuclear membrane.
C
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Receptors for ________, peptide hormones, and eicosanoids are found in the cell membranes of target cells
A) catecholamines B) carbohydrates C) kinases D) genes E) acetylcholine
The longest portion of the small intestine is the ________.
Fill in the blank(s) with the appropriate word(s).
As fluid flows down the water-permeable descending limb of the nephron loop, the osmolarity of the tubular fluid is ___________________.
a) increasing b) decreasing
Coloration of urinary and digestive wastes is the result of the presence of which products from the breakdown of red blood cells?
a. iron b. urobilins and stercobilins c. carbon dioxide d. all of the listed responses are correct