Weekly L2 Bio Quiz 3: Passive and Active transport

Moves molecules down a concentration gradient

• Cytosis

• Cytokinesis

• passive transport

• active transport

moves molecules up a concentration gradient

• cytosis

• cytokinesis

• passive transport

• active transport

 Types of passive transport

• osmosis

• diffusion

• endocytosis

• exocytosis

types of active transport

• hypertonicty

• exocytosis

• facilitated diffusion

• transcytosis

 Must be facilitated by carrier proteins

• protein channel

• active transport

• protein pump

• facilitated diffusion

The cell membrane folds around and envelops the material being transported. The membrane then pinches off to form a free vesicle inside the cell that contain the material.

• endocytosis

• Protein channel

• Protein pump

• exocytosis

A vesicle inside the cell, containing the substance being transported, moves to the cell membrane. Here the membrane of the cell and the vesicle merge together, expelling the vesicle contents out of the cell.

• exocytosis

• channel protein

• endocytosis

• protein pump

Results in the creation of a charge imbalance across the cell membrane

• hypotonicity

• protein channel

• sodium-potassium pump

• hypertonicity

The solute concentration is the higher than the inside of the cell.

• isotonic

• hypertonic

• hypotonic

• icitonic

what happens if you eat too much salt?

• no water movement at all

• water moves out of the cell it shrivels

• cells become turgid

• water moves into the cell it becomes lysed