Unit 2: Cells - Review

What does "unicellular" mean?

• Composed of one cell

• Composed of many cells

• Specialized structure within the cell

• Composed of tissues and organs

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What is the definition of "multicellular"?

• Composed of one cell

• Composed of many cells that may organize into tissues, organs, and organ systems

• Specialized structure within the cell

• Composed of a single organ system

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What is an "organelle"?

• A single cell organism

• Composed of many cells

• Specialized structure within the cell that works with other organelles to help the cell function

• A type of tissue

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Which of the following is a principle of cell theory?

• Cells can spontaneously generate.

• All living things are made of cells.

• Cells are not the basic unit of life.

• Cells do not come from other cells.

What is a characteristic of prokaryotic cells?

• They have a nucleus.

• They have membrane-bound organelles.

• They are unicellular.

• They divide by mitosis.

Which of the following is true about eukaryotic cells?

• They lack a nucleus.

• They divide by binary fission.

• They have membrane-bound organelles.

• They are always unicellular.

Which structures are found in plant cells but not in animal cells?

• Centrioles

• Cell walls

• Lysosomes

• Cilia

What is the function of the cell (plasma) membrane?

• Makes rRNA

• Controls what goes in and out

• Holds everything in place

• Protects the DNA

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Which organelle gives the cell shape and structural support for animal cells?

• Nucleolus

• Cytoskeleton

• Ribosomes

• Cytoplasm

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NGSS.MS-LS1-2

What is the role of ribosomes in a cell?

• Make proteins

• Protect the DNA

• Control what goes in and out

• Hold everything in place