The diagram represents a section of a plasma membrane. What does structure X represent?

• a protein

• glucose

• a lipid

• glycogen

Which structure is most directly responsible for maintaining homeostasis in all cells?

• chloroplast

• cell membrane

• centriole

• cell wall

Tags

NGSS.HS-LS1-3

The diagram represents a cell and several molecules. The number of molecules shown represents the relative concentration of molecules inside and outside the cell. Molecule B could enter the cell as a direct result of

• digestion

• diffusion

• active transport

• enzyme production

Which row in the chart best describe the active transport of molecule X through a cell membrane?

• 1

• 2

• 3

• 4

Base your answer on the diagrams, the dark dots indicate small molecules. These molecules are moving out of the cells, as indicated by the arrows. The number of dots inside and outside of the two cells represent the relative concentrations of the molecules inside and outside the cells.

ATP is being used to move the molecules out of the cells by

• cell A, only

• cell B, only

• both cell A and cell B

• neither cell A nor cell B

The diagram represents movement of a large molecule across a membrane. Which process is best represented in this diagram?

• active transport

• diffusion

• protein building

• gene manipulation

A student observed a wet mount of some stained plant cells in the high-power field of a compound light microscope. Diagram A represents the general appearance of these cells. The student then added several drops of a liquid to the wet mount and continued the observations. Diagram B represents the general appearance of the cells a few minutes after adding the liquid.

The liquid that the student added to the wet mount was most likely

• salt water

• distilled water

• pond water

• tap water

Which type of diffusion is being represented in this picture?

• Passive Diffusion
• Simple Diffusion
• Active Diffusion
• Facilitated Diffusion

Which type of Passive Transport is being represented in this picture?

• Passive Diffusion
• Simple Diffusion
• Active Diffusion
• Facilitated Diffusion

Match the following

• When molecules passively cross the plasma membrane through the phospholipid bilayer

• Osmosis

• Moving larger amounts or large quantities of materials through the cell membrane

• Endocytosis

• When molecules passively cross the plasma membrane through a channel protein

• Exocytosis

• Bringing in large materials through the cell membrane into a vacuole.

• Facilitated Diffusion

• The movement of water across the cell membrane

• Simple Diffusion