Cells Transport

The movement of particles from an area of high to low concentration is known as--

• Passive Transport

• Active Transport

Cell membrane transport that occurs without energy is called--

• active transport

• endocytosis

• passive transport

• exocytosis

What is the name of the process in which small molecules move from an area of high concentration to an area of low concentration across the cell membrane

• Diffusion

• Osmosis

• Active Transport

• Facilitated Diffusion

The movement of molecules from low to high is known as

• simple diffusion

• facilitated diffusion

• active transport

• osmosis

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Which is true about active transport?

• It requires energy
• It does not require energy
• It moves substances down the concentration gradient
• it moves material from high to low concentration

The concentration of water is higher in the soil than in plant root cells. Water moves into root cells of a plant by...

• Osmosis

• Simple Diffusion

• Active Transport

Due to the higher concentration of oxygen in the air than your blood, oxygen goes from the lungs into the red blood cells by....

• Osmosis

• Diffusion

• Active Transport

This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

• vacuole
• nucleus
• cell membrane
• cell wall

Which statement is correct? (choose 2)

• In passive transport; particles move against the concentration gradient

• In passive transport; particles move up the concentration gradient

• In passive transport; particles move with the concentration gradient

• In passive transport; particles move down the concentration gradient