Exam 6: Interactions Between Cells and the Extracellular Environment

Plasma freezes at

Facilitated diffusion is unable to transport molecules against a concentration gradient.

What molecules pass information from the polar regulatory molecule receptor to activate the enzymes that produce cAMP?

Movement of large molecules into a cell is called

Ions like Ca²⁺ can be second messengers for cell signaling.

Passive transport of water is known as

Which G-protein subunit binds GDP?

The osmotic pressure of a solution is directly related to its ___________ concentration.

Diffusion ____________ the entropy of a solution.

Cerebral edema would be treated with a(an)___________ intravenous solution of mannitol.

The glucose carrier of skeletal muscle is designated as

What type of cell signaling occurs through the extracellular matrix to nearby target cells?

Bulk transport is required for the transport of large polar molecules into or out of cells.

How much of the extracellular fluid comes from blood plasma?

If the intracellular concentration of Ca²⁺ was 10mEq/L and the extracellular concentration was 150mEq/L,the Ca²⁺ equilibrium potential would be

What structures are used for direct cell to cell signaling?

What type of junctional complex will prohibit paracellular transport?

Matrix metalloproteinases

Active transport proceeds when energy is expended.

The extracellular matrix is made up of collagen,elastin,and a gel-like ground substance.