Cell Membrane and Transport Review

Which type of biomolecule contains peptide bonds?

• Carbohydrates

• Proteins

• Lipids

• Nucleic Acids

Which component provides strength and rigidity to the cell membrane?

• Phosphate Heads

• Cholesterol

• Fatty Acid Tails

• Cytoskeleton

What is the main function of a protein channel in the cell membrane?

• To transport large or charged particles across the membrane

• To support and shape the cell

• Cell identification and recognition

• To increase rigidity and strength for the membrane

Which part of the cell membrane is hydrophobic?

• Phosphate heads

• Fatty acid tails

• Cholesterol

• Glycoproteins

What type of solution causes a cell to swell due to water entering the cell?

• Hypertonic

• Isotonic

• Hypotonic

• Supersonic

Which structure in the cell membrane is responsible for cell recognition?

• Glycoproteins

• Fatty acid tails

• Cholesterol

• Phosphate heads

Which of the following best describes the function of enzymes?

• Store genetic information

• Speed up chemical reactions

• Provide structural support

• Transport oxygen

Compare the roles of phosphate heads and fatty acid tails in the structure of the cell membrane.

• Phosphate heads are hydrophilic and face outward, while fatty acid tails are hydrophobic and face inward.

• Both are hydrophobic and face inward.

• Both are hydrophilic and face outward.

• Fatty acid tails are hydrophilic and face outward, while phosphate heads are hydrophobic and face inward.

Given a diagram of a cell membrane, how would you identify the location of cholesterol and explain its function?

• Cholesterol is found between phospholipids and helps maintain membrane stability.

• Cholesterol is attached to proteins and helps with cell recognition.

• Cholesterol is only found outside the membrane and helps with transport.

• Cholesterol forms the main structure of the membrane.

Label the parts of the cell membrane

a

b

c

phosphate heads

protein

fatty acid tails