How do the particles move in diffusion?

• From a region of low concentration to a region of high concentration

• From a region of high concentration to a region of low concentration

• From a region of low concentration to a region of low concentration

• From a region of high concentration to a region of high concentration

The picture below is an example of _________________.

• osmosis

• isotonic

• diffusion

• active transport

How long does diffusion last?

• Until the concentration of particles in the system is equal

• Until a region in the system has a smaller concentration of particles than the other

• Until a region in the system has a greater concentration of particles than the other

• Until the particles disappear from the system

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Tags

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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

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All organisms are made of

• organs

• tissues

• cells

Tags

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Our cells get rid of carbon dioxide multiple times a minute. Which body process takes in oxygen and puts out carbon dioxide?

• 
• 
• 
• 

Answer explanation

Respiration (breathing) takes in oxygen and puts out carbon dioxide.

^{You can learn a lot from a GIF.}

ATP energy is a product of cellular respiration. This GIF doesn't show that (boo! 😒 ). Check the other products (things that are made) during cellular respiration. There are two:

• oxygen

• carbon dioxide

• glucose (sugar)

• water

• sunlight

Answer explanation

ATP energy, carbon dioxide and water are made during cellular respiration.

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The process of converting sunlight energy into chemical energy stored in a molecule is called

• Cellular respiration
• Photosynthesis
• Mitochondria
• Carbon dioxide

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