Active/Passive Transport

Active transport is different from passive transport in that active transport involves:

• the movement of molecules from high concentration to low concentration

• an expenditure of energy

• the use of ribosomes

• a process which occurs only in the cells of simple plants and animals

Which process requires cellular energy to move molecules across the cellular membrane from a region of low concentration to a region of higher concentration?

• active transport

• diffusion

• osmosis

• hydrolysis

Tags

NGSS.HS-LS2-3

Here is a picture of an animal cell. What organelle is the arrow pointing to?

• Cell Wall

• Mitochondrion

• Nucleus

• Cell Membrane

Tags

NGSS.MS-LS1-2

Which process does not require the use of cellular energy to transport materials into or out of a cell?

• cellular respiration

• active transport

• passive transport

• vacuole

Osmosis is the diffusion of _____ across a selectively permeable membrane.

• food
• air
• water
• oxygen

During diffusion

• substances (things) moves from high to low concentration
• water moves when energy is used
• large or oddly shaped molecules move across a cell membrane
• water moves from high to low concentration

 An animal cell placed in a hypertonic (salty) solution will

• Stay the same
• Shrink- get smaller
• Swell- get bigger

Tags

NGSS.MS-LS1-5

The movement of water through a semi-permeable membrane is called?

• cell membrane
• respiration
• osmosis
• diffusion

What does selectively-permeable mean?

• The cell controls what passes in and out of the cell
• Nothing gets through
• The cell lets only large substances through

Tags

NGSS.MS-LS1-2