Movement of Materials in Cells

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

During osmosis

• water moves from high to low concentration
• large or oddly shaped molecules move across a cell membrane
• water moves when energy is used
• proteins are built

_______ regulates what enters and leaves a cell.  

• Cell Membrane
• Nucleus
• Mitochondria
• Cytoplasm

Tags

NGSS.MS-LS1-2

When particles move from areas of high concentration to areas less concentrated, this has taken place.

• diffusion
• mitosis
• endocytosis
• photosynthesis

Tags

NGSS.MS-LS2-3

What does “high concentration area” mean?

• Spread out
• Tightly packed together
• Uncrowded
• Spacious

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

• High, low
• Low, high
• Low, low,
• High, high

If there is more oxygen in the blood than in an organ, which direction would the oxygen move?

• Out of the blood
• Into the blood

In a plant what gases are exchanged?

• oxygen and nitrogen

• nitrogen and carbon dioxide

• carbon dioxide and water

• carbon dioxide and oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Why does a plant cell membrane need to use energy (active transport) to move substances in and out of the cell.

• Because the energy needs to be used up

• It doesn't, diffusion and osmosis move everything

• So the cell doesn't have to use concentration gradients

• Because oxygen is needed for cellular respiration

Tags

NGSS.MS-LS1-2