Cell Transport

Which of the following is NOT a major part of the cell membrane?

• proteins

• nucleic acids

• carbohydrates

• phospholipids

Tags

NGSS.5-PS1-1

The cell membrane maintains ____________ by controlling what enters and leaves cells

• homeostasis

• temperature

• structure

• reproduction

Tags

NGSS.HS-LS1-3

What is the function of cholesterol in the cell membrane?

• it forms the lipid bilayer

• it works in cell identification

• it allows certain moelecules to pass through

• it helps maintain the fluidity of the membrane

Some molecules pass through the cell membrain easily whereas other molecules cannot

• impermeable

• semipermeable

• permeable

• resistance

Which of theses statements is true about active transport?

• it moves molecules from high concentration to low concentration

• it requires energy to occur

• it includes processes like simple and facilitated diffusion

• it goes down the concen tration gradient

Oxygen and carbon dioxide move into and out of the cell using

• diffusion

• exocytosis

• protein pumps

• osmosis

If a cell is placed in a hypertonic solution, what will happen?

• The cell will lose water and shrivel

• the cell will gain water and swell

• the cell will remain the same

• none of the above

A molecule moves into the cell using a channel protein. The molecule has moved from a higher concetration to a lower concentration. What type of transport is this?

• osmosis

• facilitated diffusion

• protein pump

• exocytosis

A cell transports a very large molecule into the cell using energy. What type of transport is this?

• protein pump

• diffusion

• facilitated diffusion

• endocytosis

A cell uses a protein and energy to move molecules across the membrane,

what type of transport is it?

• facilitated diffusion

• exocytosis

• osmosis

• protein pump