2024 Cell transport Review

A diagram of a cell is shown below. The cell membrane is permeable to both the oxygen and carbon dioxide molecules.​ Initially, the oxygen and carbon dioxide molecules will most likely move in which direction?

• oxygen will enter the cell, and carbon dioxide will exit the cell
  

• oxygen will exit the cell, and carbon dioxide will enter the cell

  
  

• Both oxygen and carbon dioxide will enter the cell.

  
  

• Both oxygen and carbon dioxide will exit the cell.
  

Which of the following is a function of the cell membrane?

• breaks down lipids carbohydrates and proteins from food

• stores water salt and proteins

• keeps the cell wall in place

• regulates the movement of materials into and out of the cell

Some protein channels in a cell membrane can USE ENERGY to change their shape to allow certain molecules to pass through the membrane. This is an example of

• Facilitated Transport

• diffusion

• exocytosis

• active transport

An animal cell is placed in an isotonic solution. Which best explains why there is no net movement of water across the cell membrane?

• Water flows across the membrane at the same rate in both directions

• Water flows into the cell at a faster rate causing the cell to swell

• Water flows out of the cell at a faster rate causing the cell to shrink

• Water flows across the membrane at a slower rate in both directions

This diagram shows cellular activity across a cell membrane. Which 2 processes does this diagram most directly model?

• Energy conversions and synthesis of new molecules

• synthesis of new molecules and homeostasis

• transport of molecules and energy conversions

• homeostasis and transport of molecules

Analyze the diagram below showing cellular activity across a cell membrane. What claim BEST supports the model for the glucose transport across the membrane?

• glucose is a small molecule able to pass across the membrane without a carrier protein against the concentration gradient

• glucose is a small molecule requiring a carrier protein to pass across the membrane against the concentration gradient

• glucose is a large molecule requiring a carrier protein to pass across the membrane withthe concentration gradient

• glucose is a large molecule able to pass across the membrane without a carrier protein with the concentration gradient

The energy necessary to move sodium ions across a cell membrane comes from

• The movement of water

• the use of atp

• replication of dna

• manufacturing of rna

The cell in beaker B would be

• hypertonich

• hypotonic

• isotonic

• wet

Refer to the illustration below. The process taking place in picture Y is 

• endocytosis

• exocytosis

• facilitated diffusion

• osmosis

Refer to the illustration below. The process taking place in picture X is 

• endocytosis

• exocytosis

• facilitated diffusion

• osmosis