Cell Transport AP Biology

Assuming that the purple molecules are too large to pass through the membrane, what would happen to the water level as a result of osmosis?

• The water level would rise on the A side

• The water level would rise on the B side

• The water level would remain constant

• The water level would drop on the A side.

Which of the following types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?

• transmembrane proteins

• integral membrane proteins

• peripheral proteins

• cholesterol

In what way do the membranes of a eukaryotic cell vary?

• Phospholipids are found only in certain membranes

• Certain proteins are unique to each membrane

• Only certain membranes of the cell are selectively permeable

• Some membranes have hydrophobic surfaces exposed to the cytoplasm while others have hydrophilic surfaces facing the cytoplasm.

Which of the following processes is an "umbrella" term for the others?

• Osmosis.

• Facilitated diffusion.

• Passive transport.

• Transport of an ion down its electrochemical gradient.

White blood cells engulf bacteria using _______________.

• phagocytosis

• pinocytosis

• osmosis

• receptor-mediated exocytosis

Which of the following factors would tend to increase membrane fluidity?

• a greater proportion of unsaturated phospholipids

• a greater proportion of saturated phospholipids

• a lower temperature

• a relatively high protein content in the membrane

Which of the following membrane activities requires energy from ATP?

• Facilitated diffusion of chloride ions through a chloride channel.

• Movement of Na⁺ ions from lower concentration in a mammalian cell to a higher concentration in the extracellular fluid.

• Movement of glucose molecules into a bacteria cell from a medium containing a higher concentration of glucose than inside the cell.

• Movement of carbon dioxide out of a paramecium.

Where will the water go?

• Into the cell

• Out of the cell

• Equally in & out - it's isotonic

• There is no water

Tags

NGSS.MS-LS1-2

A blood cell is placed into the jar, as seen. Where will the water go?

• Into the cell

• Out of the cell

• Equally in & out - it's isotonic

• The water is a lie

Tags

NGSS.MS-LS1-2

What type of solution allows water to enter the plant cell?

• hypotonic solution

• hypertonic solution

• isotonic solution

• active transport

Tags

NGSS.MS-LS1-2