Cell Membrane & Transport

Open Ended

What does the cell membrane do?

Multiple Choice

Why is the cell membrane called semi-permeable?

• Because it selectively allows some substances to pass while blocking others.

• The cell membrane is only permeable to water molecules.
• The cell membrane allows all substances to pass freely.
• The cell membrane is impermeable to all substances.

Multiple Choice

What is the main function of phospholipids in the cell membrane?

• To facilitate protein synthesis.
• To form a barrier that separates the inside and outside of the cell

• To store genetic information.
• To provide energy for cellular processes.

Multiple Choice

What part of a phospholipid is attracted to water?

• Hydrophobic tails

• Hydrophilic head

• Phosphate group

• Fatty acid chain

Multiple Choice

Why is the cell membrane described as a phospholipid bilayer?

• It is made of one layer of phospholipids

• It is made of two layers of phospholipids

• It is made of protein only

• It is made of carbohydrates

Drag and Drop

Protein channels help substances move across the cell membrane by providing a ​ ​

Placeholder

that allows specific molecules to ​ ​

Placeholder

​ without using ​ ​

Placeholder

. This process is a type of ​ ​

Placeholder

transport.

Drag these tiles and drop them in the correct blank above

pathway or tunnel

move across the membrane

energy (ATP)

passive

active

barrier

exit the cell

Drag and Drop

All molecules move from​ ​​

Placeholder

to​ ​

Placeholder

concentration during passive transport.

Drag these tiles and drop them in the correct blank above

HIGH

LOW

Multiple Choice

Which of the following statements about passive transport is correct?

• Molecules move from low to high concentration

• Energy is required for molecules to move

• Molecules move from high to low concentration

• Molecules only move through the cell membrane, not protein channels

Multiple Choice

Which of the following best describes the main function of ATP in the cell?

• It acts as a battery, storing and releasing energy for cellular processes.

• It provides structural support to the cell membrane.

• It transports oxygen throughout the cell.

• It synthesizes proteins in the ribosome.

Multiple Choice

How does the example of water flowing into and out of houses during a hurricane help explain passive transport in cells?

• Water flow is controlled by active transport mechanisms in cells.

• Water movement during a hurricane is unrelated to cellular processes.

• The hurricane example shows how cells can store excess water.

• It shows how substances move passively through concentration gradients, like water flow during a hurricane.

Multiple Choice

Which of the following statements about active transport is correct?

• It moves molecules from low to high concentration and requires energy.

• It moves molecules from high to low concentration and does not require energy.

• It does not involve proteins in the membrane.

• It is the same as passive transport.

Open Ended

Why might neural cells, root cells, and bone cells need to take certain things in or out of the cell?

Multiple Choice

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

• High, low

• Low, high

• Low, low

• High, high

Multiple Choice

Which diagram best shows the end result of diffusion?

• F
• G
• H
• J

Multiple Choice

Where is there a low concentration of dye?

• at the bottom of cup

• in the color

• at the top of cup

• no concenteraion gradient

Multiple Choice

Which way will the water molecules move during osmosis?

• Out of the cell, so the cell shrinks.
• Out of the cell, so the cell swells.
• Into the cell, so the cell shrinks.
• Into the cell, so the cell swells.

Multiple Choice

Which red blood cell is normal?

• A

• B

• C

Multiple Choice

A person should never drink salty water because their cells would

• shrink
• expand

Multiple Choice

What happened to the CELL WALL and the CELL MEMBRANE in these plant cells?

• Both the CELL WALL and CELL MEMBRANE shrunk

• Only the CELL WALL shrunk, the CELL MEMBRANE stayed the same

• The CELL WALL stayed the same, only the CELL MEMBRANE shrunk

• Both the CELL WALL and CELL MEMBRANE stayed the same

Multiple Choice

A cell has 80% water 20% solute, the surrounding solution has 60% water and 40% solute. What type of solution is this?

• Hypertonic

• Isotonic

• Hypotonic

• Equilibrium