EOC Cell Review

Which explains how buffers help cells to maintain homeostasis?

• provide hydration for the cell

• help keep the pH within a cell constant

• contain enzymes to speed up chemical reactions

• supply nutrient growth and cellular processes

Tags

NGSS.HS-LS1-3

Which molecules form the bilayer of the cell membrane?

• carbohydrates

• cholesterol

• phospholipids

• proteins

Tags

NGSS.MS-LS1-2

The diagrams show configurations of phospholipids. Which diagram is the best representation of the plasma membrane?

• diagram 1

• diagram 2

• diagram 3

• diagram 4

Tags

NGSS.MS-LS1-2

Why is it important ot rid the cell of toxins?

• to maintain cellular respiration

• to maintain cellular division

• to maintain active transport

• to maintain homeostasis

Which of the following is considered to be passive transport?

• facilitated diffusion

• sodium potassium pump

• endocytosis

• exocytosis

The cell membrane contains channels and pumps that help move materials from one side to another. What are these channels and pumps made of?

• carbohydrates

• proteins

• lipids

• nucleic acids

Tags

NGSS.MS-LS1-2

Shira is analyzing samples of red blood cells using a microscope. Her observations are shown in the image. Shira observes that the shape of Cell A appears normal, while Cell B appears swollen and Cell C is shrunken. The shrinking of cell C indicates what has occurred?

• an anaerobic environment outside of the cell

• lower solute concentration outside of the cell than inside

• more oxygen inside the cell than what can be utilized

• higher solute concentration outside the cell than inside

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

When placed in a solution that is 30% water and 70% salt, what would happen to a cell that has a 70% water concentration?

• The cell will maintain its 70% water concentration and remain the same size

• The cell will lose water and shirnk to reach equilibrium with the environment

• The cell will take in water and well to reach equilibriumwith the environment.

• The cell will maintain to 70% water concentrationand swell to allow for some salt to enter the cell to reach equilibrium with the environment.

Tags

NGSS.MS-LS1-2

Which will most likely happen if a freshwater plant cell is placed in a beaker of salt water for an hour?

• It will swell and burst.

• It will lose water and shrink.

• It will reach a state of equilibrium.

• It will use energy and pump extra salt out of the cell.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-5

The diffusion of water into or out of a cell is called

• solubility

• endocytosis

• selective transport

• osmosis