Exploring Cell Structure and Theory

What is the basic unit of structure and function in living organisms?

• Tissue

• Cell

• Organ

• Organism

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TEKS.SCI.6.13A

Which of the following statements best describes the historical development of cell theory?

• Cells can spontaneously generate from non-living matter.

• All living organisms are composed of one or more cells, and all cells come from pre-existing cells.

• Cells are only found in plants.

• Cells are the smallest unit of matter.

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TEKS.SCI.6.13A

What is the primary function of the cell membrane?

• To produce energy for the cell

• To control the movement of substances in and out of the cell

• To store nutrients

• To provide structural support

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TEKS.SCI.8.13A

Identify the organelle responsible for energy production in the cell.

• Nucleus

• Ribosome

• Mitochondria

• Vacuole

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TEKS.SCI.8.13A

Explain how the cell wall differs from the cell membrane in plant cells.

• The cell wall is flexible, while the cell membrane is rigid.

• The cell wall provides structural support, while the cell membrane controls the movement of substances.

• The cell wall is found in animal cells, while the cell membrane is not.

• The cell wall is involved in energy production, while the cell membrane is not.

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TEKS.SCI.8.13A

Which organelle is responsible for photosynthesis in plant cells?

• Mitochondria

• Ribosome

• Chloroplast

• Nucleus

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TEKS.SCI.8.13A

Describe the role of ribosomes in a cell.

• They store genetic information.

• They synthesize proteins.

• They produce energy.

• They transport substances.

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TEKS.SCI.8.13A

What is the function of the nucleus in a cell?

• To control cell activities and store DNA

• To produce proteins

• To provide energy

• To transport materials

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TEKS.SCI.8.13A

How do vacuoles contribute to the function of a plant cell?

• They produce energy for the cell.

• They store water, nutrients, and waste products.

• They synthesize proteins.

• They control cell division.

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TEKS.SCI.8.13A

Which of the following is NOT a part of the cell theory?

• All living things are composed of cells.

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

• All cells arise from pre-existing cells.

• Cells can spontaneously generate from non-living matter.

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TEKS.SCI.6.13A