Cell Membrane and Cell Transport

What happens during endocytosis?

• The cell engulfs material from the outside environment.

• The cell releases waste products into the environment.

• The cell divides into two daughter cells.

• The cell shrinks and loses water.

Tags

NGSS.HS-LS2-3

What is the state called when the amount of water inside and outside of a cell is equal?

• Equilibrium

• Homeostasis

• Osmosis

• Diffusion

What is the significance of the fluid mosaic model?

• It describes the cell membrane as a dynamic and flexible structure with various components.

• It explains the process of cellular respiration in mitochondria.

• It outlines the steps of protein synthesis in ribosomes.

• It illustrates the structure of DNA and its replication process.

What is diffusion?

• The movement of molecules from an area of higher concentration to an area of lower concentration.

• The process of molecules being evenly distributed in a solution.

• The movement of molecules against a concentration gradient.

• The random movement of particles in a vacuum.

What happens to a cell when the concentration of red molecules outside is higher than inside, and they cannot penetrate the cell?

• Water will leave the cell, and the cell will shrink.

• The cell will swell and burst.

• The cell will remain the same size.

• Water will enter the cell, and the cell will expand.

Tags

NGSS.HS-LS1-3

What is the phospholipid bilayer?

• A double layer of phospholipids that makes up the cell membrane.

• A single layer of proteins that surrounds the cell nucleus.

• A type of carbohydrate layer that protects the cell from toxins.

• A triple layer of cholesterol that stabilizes the cell membrane.

What is the role of proteins in the cell membrane?

• They assist in transport, act as receptors, and provide structural support.

• They store genetic information.

• They produce energy for the cell.

• They are involved in cell division.

What structures in the cell membrane identify and communicate with the extracellular environment?

• Phospholipid Bilayer

• Carbohydrate Chains

• Protein Channels

• Cholesterol Molecules

What is a selectively permeable membrane?

• A membrane that allows all molecules to pass freely.

• A membrane that allows certain molecules to pass while blocking others.

• A membrane that is impermeable to all substances.

• A membrane that only allows water to pass through.

What is the difference between passive and active transport?

• Passive transport requires energy, while active transport does not.

• Passive transport does not require energy, while active transport does.

• Both passive and active transport require energy.

• Passive transport occurs only in plants, while active transport occurs in animals.