Passive Transport Review

What is the characteristic of a cell membrane that allows it to control materials entering and leaving a cell?

• A cell membrane is semi-permeable.

• A cell membrane is impermeable.

• A cell membrane is rigid.

• A cell membrane is porous.

What type of transport uses a transport protein?

• Active transport

• Facilitated diffusion

• Simple diffusion

• Osmosis

What is diffusion?

• The process of particles moving from an area of lower concentration to an area of higher concentration.

• The movement of particles from an area of higher concentration to an area of lower concentration.

• The mixing of two substances to form a solution.

• The process of particles remaining stationary in a solution.

Which part of the cell controls the movement of substances?

• Cell membrane

• Nucleus

• Cytoplasm

• Mitochondria

What is the significance of a semi-permeable membrane?

• It allows all substances to pass freely.

• It blocks all substances from passing through.

• It allows certain substances to pass while blocking others, maintaining homeostasis.

• It is impermeable to water but allows gases to pass.

What regulates what enters and leaves a cell?

• Cell Membrane

• Nucleus

• Cytoplasm

• Mitochondria

What is the function of the cell membrane?

• To provide energy to the cell

• To protect the cell and regulate the movement of substances in and out

• To store genetic information

• To facilitate cell division

What is facilitated diffusion?

• A process of transporting molecules across a membrane via protein channels.

• A method of active transport requiring energy input.

• A type of diffusion that occurs only in liquid environments.

• A process that involves the movement of molecules against their concentration gradient.

Which process moves substances with the concentration gradient?

• Osmosis

• Active Transport

• Diffusion

• Facilitated Diffusion

What is concentration gradient?

• A concentration gradient is the difference in concentration of a substance across a space.

• A concentration gradient is the uniform distribution of a substance in a space.

• A concentration gradient is the process of mixing two substances together.

• A concentration gradient is the measurement of temperature in a solution.