cell membrane/macromolecules/characteristics of life

Most of the cell membrane is made of...

• Lipids
• Carbohydrates
• Proteins
• Nucleic acids

What forms the channels and pumps in the lipid bilayer?

• carbohydrates

• proteins

• hydrophilic heads

• lipids

Which of the following is NOT part of the cell membrane?

• Lipids

• Nucleic Acids

• Proteins

Which of the following is responsible for getting large or charged molecules across the cell membrane?

• E

• B

• C

• D

Protein...

• A
• B
• C
• D

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

The function of the cell membrane is....

• to regulate what enters and leaves the cell.

• fight bacteria and viruses that enter the cell.

• provide rigid support and protection to the cell.

• make sure each cell can move

Hydrophobic means...

• water-loving

• water-fearing

• nonpolar

• lipid soluble

Tags

NGSS.HS-ESS2-5

Which molecule is too large to cross the cell membrane?

• water
• glucose
• O₂
• starch

Which molecule is too large to cross the cell membrane?

• carbon dioxide

• oxygen

• water

• DNA

___________ have 2 functions in the cell membrane.
1.) They act like gatekeepers, only let certain things in. 
2.) Enzyme receptors embedded in the membrane.

• Carbohydrates 
• Proteins 
• Phospholipids 
• Cholesterol

Tags

NGSS.MS-LS1-2