2.1 Characteristics of Cells

DNA is the material that provides instructions for all cell processes. Where is the DNA located in prokaryotes?

• in the nucleus

• in the cytoplasm

• in the flagella

• in the membrane-bound organelles

Which of the following types of cells is normally larger?

• bacterial cells

• human cells

• plant cells

All organisms are made up of cells.

• true

• false

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NGSS.MS-LS1-1

Cells are ___________, because their size is limited by their outer surface area.

• big

• round

• square

• small

Leeuwenhoek was the first to describe microscopic living cells under a microscope when he looked at...

• a butterfly wing.

• human blood.

• a drop of pond water.

• bacteria from food.

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NGSS.MS-LS1-1

A prokaryotic cell ____________ have a nucleus or membrane-bound organelles.

• does

• does not

The ____________ controls the flow of water and other materials into and out of a cell.

• cytoplasm

• nucleus

• organelle

• cell membrane

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NGSS.MS-LS1-2

All living cells come from other living cells.

• true

• false

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NGSS.MS-LS1-1

Organisms can be living or non-living.

• true

• false

Some organisms are made up of a single cell while others are made up of trillions of cells.

• true

• false

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NGSS.MS-LS1-1