7th Grade CUA 1 - Unit 2 Review

What is the basic unit of life in all living things?

• Atom

• Cell

• Tissue

• Organ

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NGSS.MS-LS1-1

Which part of a cell controls what enters and leaves the cell?

• Nucleus

• Cell membrane

• Cytoplasm

• Mitochondria

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NGSS.MS-LS1-2

The graph shows the number of mitochondria in breast muscles of different birds. Which statement best explains these data?

• The number of mitochondria in chickens would be higher if they could fly.
• The chicken breast muscle requires the greatest amount of energy per cell.
• The energy requirement of pigeon breast muscle is low.
• Duck breast muscle require the least amount of energy.

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NGSS.MS-LS1-2

All living things are made up of how many cells?

• Only one cell

• Only two cells

• One or many cells

• No cells

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NGSS.MS-LS1-1

You are given a model of a cell with labeled parts: nucleus, mitochondria, and cell membrane. How could you use this model to explain how the cell produces and uses energy?

• By showing that the mitochondria produce energy and the cell membrane allows nutrients in

• By stating that only the nucleus is important

• By ignoring the mitochondria

• By focusing only on the cell wall

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NGSS.MS-LS1-2

Which cell structure is responsible for producing energy?

• Ribosome

• Mitochondria

• Nucleus

• Cell wall

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NGSS.MS-LS1-2

A scientist observes a living thing under a microscope and sees only one cell. What can the scientist conclude?

• The organism is multicellular

• The organism is unicellular

• The organism is not alive

• The organism is a plant

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NGSS.MS-LS1-1

Which of the following best describes a unicellular organism?

• An organism made of many cells

• An organism made of one cell

• An organism with no cells

• An organism with two nuclei

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NGSS.MS-LS1-1

What is the function of the nucleus in a cell?

• To store water

• To control cell activities

• To produce energy

• To protect the cell

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NGSS.MS-LS1-2

Which of the following is an example of a multicellular organism?

• Bacterium

• Amoeba

• Human

• Paramecium

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NGSS.MS-LS1-1