Cell Membrane & Diffusion

The cell membrane may also be referred to as the ___________________.

• Cell Wall

• Nucleolus

• Phenolipase Layers

• Plasma Membrane

Tags

NGSS.MS-LS1-2

Small units called ____________________ are what make up the cell membrane.

• Phospholipids

• Ribosomes

• Nucleotides

• Amino Acids

The cell membrane allows only certain materials to move into and out of the cell. What term describes this ability?

• Permeable

• Selectively Palatable

• Semi-permeable

• Semi-Photosynthetic

This image represents which type of structure?

• Hydrogen

• Nucleus

• Membrane Tissue

• Phospholipid

Based on the diagram below, what does the term "Hydrophobic" mean?

• Attracted to water

• Repels water

• Electrified in water

• Fear of drowning

The structure pictured is referred to as the ________________________.

• Phospholipid Bilayer

• Cellular Transport System (CTS)

• Aquafiltration System

• Hydrodynamic Filtration

Based on the image, where will the carbon dioxide molecules move towards?

• Inside the cell

• Outside the cell

• Remain in the hydrophobic tails of the membrane

• They will not be able to pass through the phospholipid bilayer

Based on this diagram, which direction will the oxygen molecules move towards?

• Inside the cell

• Outside the cell

• Remain in the hydrophobic tails of the membrane

• They will not be able to pass through the phospholipid bilayer

Why is sliding down a slide a good comparison to "passive transport"?

• Because cells contain water, just like a water slide.

• Because it does not require any energy to go from the low point to the high point of a slide.

• Because it requires energy to go from the high point to the low point of a slide.

• Because it does not require any energy to go from the high point to the low point of a slide.

Diffusion will always move molecules ____________________________________.

• towards the highest concentration of molecules

• with the concentration gradient.

• from low to high concentration

• against the concentration gradient.