Exam 3: Cellular Form and Function

are membrane proteins that bind to signals by which cells communicate.

Insulin is taken up by endocytosis by endothelial cells lining capillaries, and then transported across the cell to the other side, where it is released.This transport is called

In its second-messenger role, cAMP activates enzymes called , whose job is to regulate other enzymes by adding phosphate groups to them.

What function would immediately cease if the ribosomes of a cell were destroyed?

Gates respond to all these stimuli except

These are all membranous organelles except

consume ATP when transferring solutes from one side to the other side of the plasma membrane.

decompose fatty acids, and detoxify alcohol, free radicals, and drugs.

The most important advantage of transmission electron microscope (TEM) over light microscope (LM) is its higher resolution.

Facilitated diffusion and active transport have in common that both

is not involved in protein synthesis.

A red blood cell is placed in a hypertonic solution.The concentration of solutes in the solution is than the concentration of solutes in the intracellular fluid and will cause the cell to )

are the most abundant molecules in the plasma membrane.

act like identification tags in the glycocalyx that enable the body to distinguish its own cells from foreign and diseased cells.

This organelle synthesizes steroids in the ovary and stores calcium in muscle cells.

This figure shows the structure of a representative cell.What does "B" represent?

play an important role in cell division, and they are made of .

A crystal of calcium phosphate in the cytoplasm of a cell should be classified as an inclusion.

This figure shows the plasma membrane.What does "A" represent?

Both the nucleus and the mitochondrion are surrounded by two layers of unit membrane.