Unit 2 Pretest

A plant growing towards the light is an example of 

• reproduction.
• responding to a stimuli.
• metabolism.
• homeostasis.

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A maggot changing into a fly is an example of 

• reproduction.
• growth and development.
• homeostasis.
• evolution.

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The maintenance of an organism’s internal environment is called:

• compensating
• homeostasis
• balancing
• routine

An amoeba is a unicellular organism. Which characteristic of life is this?

• All living things use energy
• All living things contain cells
• All living things respond to their environment
• All living things grow

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Groups of organs working together to carry out an important life process are called . . .

• cytoskeleton

• organisms

• organelles

• organ systems

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This organelle uses carbohydrates to produces energy in the form of ATP for the cell.

• chloroplast
• mitochondria
• ribosome 
• nucleus

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Selectively permeable barrier composed of phospholipids that controls what enters and leaves the cell.

• cell membrane
• cell wall
• cytoskeleton
• rough ER

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Controls cell functions because DNA is stored here.

• nucleus
• nucleolus
• ribosome
• cholorplast

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Site of protein synthesis, can be free floating or attached to the rough ER.

• nucleus
• mitochondria
• vacuole
• ribomsome

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Gel like material, fills the space between cell organelles, is where many chemical reactions occur

• cytoplasm
• chromatin
• chloroplast
• cell membrane

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