Basic Units of Life

Who was the first person to see cells under the microscope and give them their name?

• Anton van Leeuwenhoek

• Louis Pasteur

• Robert Hooke

Which of the following is not true?

• All cells come from pre-existing cells.

• Cells are the basic unit of structure and organisation in all living things.

• Cells are the basic unit of structure and organisation in all matter.

• All organisms are made of one or more cells.

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NGSS.MS-LS1-1

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Which of the following is the smallest unit of life that can carry out all life functions?

• chloroplast

• vacuole

• nucleus

• the cell

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NGSS.MS-LS1-1

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Why is the nucleus important?

• gives the cell its energy

• stores genetic information

• removes waste products

• allows molecules to enter the cell

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Which cell structure controls what can enter or leave a cell?

• nucleus

• cytoplasm

• cell membrane

• vacuole

Starch and water molecules in potato cells are stored in what organelle?

• nucleus

• cell wall

• cytoplasm

• vacuole

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NGSS.MS-LS1-2

Which structures are found in both plant and animal cells?

• nucleus

• cell membrane

• cell wall

• vacuole

• cytoplasm

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NGSS.MS-LS1-2

What is the function of a cell wall?

• waterproof layer for the cell

• protects and supports the cell

• prevents oxygen from entering the cell

• prevents mineral salts from leaving the cell

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NGSS.MS-LS1-2

What is the function of chloroplasts?

• absorb light energy and manufacture food

• remove waste materials from the cell

• protect the cell

• control the shape of the cell

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NGSS.MS-LS1-6

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Which one of the following statements is not true?

• Most cell activities take place in the cytoplasm.

• Our traits are determined by the genes found in our nucleus.

• The cell membrane allows all substances to enter or leave the cell.

• The cytoplasm is a jelly-like substance.