Cell Membrane Structure and Function

Which of the following is a primary component that makes up the cell membrane

• carbohydrates

• nucleic acids

• proteins

• phospholipids

Which of the following membrane components most likely plays a role in cell-to-cell recognition?

• phosphate heads

• channel proteins

• carbohydrate chains

• fatty acid tails

All living cells have a cell membrane (plasma membrane)

• True

• False

The cell membrane carries out important functions. Which of these are NOT functions of the cell membrane? Select all that apply.

• allows cells to stick together to form tissues

• regulates the temperature of the cell

• controls what enters and exits the cell

• allows a cell to communicate with other cells and its external environment

Tags

NGSS.MS-LS1-2

This shows a simplified diagram of a molecule found in the cell membrane.

Which "waterproof" macromolecule makes up the tail of the phospholipid?

• Protein

• Carbohydrate
• Lipid (fatty acid)

• Nucleic Acid

This shows a simplified diagram of a molecule found in the cell membrane.

What molecule makes up the polar, "water-loving" head of the phospholipid?

• Phosphate

• Carbohydrate
• Lipid (fatty acid)

• Nucleic Acid

Tags

NGSS.MS-LS1-2

This molecule has a "head" and a "tail". Which end of the molecule is hydrophilic?

• Head

• Tail

Tags

NGSS.MS-PS1-1

This molecule has a "head" and a "tail". Which end of the molecule is hydrophobic?

• Head

• Tail

Identify Structure "A"

• glycolipid

• protein

• cholesterol

• receptor protein

Identify Structure "B"

• glycolipid

• phospholipid

• cholesterol

• glycoprotein