U2 Practice Test (Version 1)

Protein pumps are a passive form of transport that requires no energy.

• False
• True

Answer explanation

Protein pumps are active forms of transport because they require energy (ATP) to move molecules across the membrane.

Water molecules moving across the cell membrane

• Osmosis
• Diffusion
• Active Transport
• Semipermeable

Answer explanation

Osmosis is the movement of water molecules through a semipermeable membrane.

The cell membrane is always in motion.

• True
• False

Answer explanation

The cell membrane is dynamic, allowing it to change and move constantly.

Produces (synthesizes) proteins

• Ribosomes
• Lysossomes
• Endoplasmic Reticulum
• DNA

Answer explanation

Ribosomes synthesize proteins from amino acids.

Tags

NGSS.HS-LS1-1

A molecule that makes up the cell membrane

• Phospholipid
• Protein Channel
• Cholesterol
• Hydrophobic

Answer explanation

Phospholipids form the basic structure of the cell membrane.

Facilitated diffusion is passive transport when molecules pass through the cell membrane.

• False
• True

Answer explanation

Facilitated diffusion requires protein channels for passage through the membrane.

Which cell has chloroplasts?

• Plant Cell
• Animal Cell
• Both

Answer explanation

A plant cell is shown, likely due to its cell wall and large vacuole.

Which cell has a cell wall?

• Plant Cell
• Animal Cell
• Both

Answer explanation

A plant cell is shown, likely due to its cell wall and large vacuole.

Which cell has a cell membrane?

• Plant Cell
• Animal Cell
• Both

Answer explanation

A plant cell is shown, likely due to its cell wall and large vacuole.

Movement of molecules across the cell membrane without using energy

• Passive Transport
• Active Transport
• Gradient
• Homeostasis

Answer explanation

Passive transport does not require energy and allows molecules to move along their concentration gradient.