The ________ is usually the largest organelle in a eukaryotic cell. It contains the genetic material of the cell, which directs cellular activity
A) nucleus
B) mitochondrion
C) lysosome
D) Golgi apparatus
A
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A protein deficiency may be accompanied by edema because of
A) a decrease in plasma proteins and therefore a decrease in colloid osmotic pressure. B) lack of sufficient water in the diet. C) vasodilation of capillaries throughout the body. D) an increase in blood pressure.
The respiratory membrane consists of
A) two thicknesses of epithelial cells and basement membranes. B) two thicknesses of epithelial cells. C) a single thickness of epithelial cells. D) a single thickness of epithelial cells and a basement membrane.
In the second-messenger system, what serves as the first messenger?
A) cyclic AMP (cAMP) B) DNA C) ATP D) the hormone E) mRNA
Rods and cones have a G protein called ____________________
Fill in the blank(s) with correct word