Active and Passive Transport

The difference in the concentration of a substance from one location to another is called a/an

• diffusion
• osmosis
• concentration gradient
• passive transport

A molecule that diffuses down a concentration gradient foes from an area of ______ concentration into an area of ______ concentration.

• high, low
• low, high
• passive, active
• active, passive

Passive transport requires no

• concentration gradients

• osmosis

• motion

• energy

This example of passive transport is the diffusion of water.

• osmosis
• concentration gradient
• isotonic
• facilitated diffusion

This solution has the equal concentrations of water molecules and particles.

• hypertonic
• hypotonic
• isotonic

In facilitated diffusion, molecules move

• Down a concentration gradient
• Against a concentration gradient

This brings in fluids and solutes into a cell during active transport.

• pinococytosis
• phagocytosis

This process gets rid of wastes.

• endocytosis
• exocytosis
• osmosis
• diffusion

A cell may transport a substance in ______ if the substance is too large to cross the membrane.

• lysosomes
• ribosomes
• vesicles
• cytoplasm

This uses energy

• endocytosis
• exocytosis
• both

Tags

NGSS.MS-LS1-7

NGSS.MS-LS2-3