Cell Membrane Transport Quiz

What role do protein channels play in the cell membrane?

• They store energy

• They facilitate the transport of specific molecules

• They produce proteins

• They synthesize lipids

What is the primary function of carrier proteins in the cell membrane?

• To store genetic information

• To transport specific substances across the membrane

• To produce energy

• To synthesize proteins

Which component is responsible for the selective permeability of the cell membrane?

• Glycoprotein

• Phospholipid bilayer

• Cholesterol

• Peripheral protein

Which component is involved in cell-to-cell communication?

• Phospholipid

• Glycoprotein

• Cholesterol

• Lipid core

Which structure in the cell membrane is amphipathic?

• Phospholipids

• Proteins

• Carbohydrates

• Nucleic acids

What is the role of integral proteins in the cell membrane?

• Energy storage

• Transporting molecules across the membrane

• DNA replication

• Protein synthesis

Which molecule is labeled as a glycolipid in the diagram?

• A

• B

• C

• D

Which component is labeled as integral protein in the diagram?

• F

• G

• H

• I

What type of molecule is a phospholipid?

• Protein

• Carbohydrate

• Lipid

• Nucleic acid

What is the function of the hydrophobic tail in a phospholipid?

• Attracts water

• Repels water

• Stores energy

• Provides structure