Topic 7 Review

Why do all the cells in a sample of cheek tissue look the same under a microscope?

• They are all performing different functions.

• They were produced from the same original cell.

• They are made of different types of genetic material.

• They do not require a nucleus.

A scientist discovers a material that has small, repeating compartments visible under a microscope. What is the best conclusion about this material?

• It was once part of a living organism.

• It is likely made of minerals.

• It must be an artificial material.

• It cannot contain any cells.

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NGSS.MS-LS1-1

NGSS.MS-LS1-2

Which statement best describes an autotrophic, multicellular, eukaryotic organism?

• It is an animal that eats other organisms.

• It is a bacterium that lives in extreme environments.

• It is a plant that makes its own food.

• It is a fungus that decomposes dead material.

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A scientist is studying bacteria under a microscope. What is a defining characteristic of the bacteria?

• It has many different specialized cells.

• It is made up of multiple cells.

• It does not contain a nucleus.

• It is the same size as a typical animal cell.

A researcher wants to determine if a newly discovered cell belongs to a prokaryotic or eukaryotic organism. What would be the best structure to investigate?

• The presence of ribosomes

• The presence of a cell membrane

• The presence of a nucleus

• The ability to move independently

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NGSS.MS-LS1-2

Which statement about heterotrophs is true?

• A) They make their own food through photosynthesis.

• B) They rely on consuming other organisms for energy.

• C) They are always unicellular.

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Which statement from the cell theory helps explain why different types of cells share common structures?

• A) All living things are made of cells.

• B) Cells can develop independently in different organisms.

• C) All cells have identical functions.

• D) Cells are only found in multicellular organisms.

A scientist observes a cell with a nucleus and a cell wall. What type of organism does this cell most likely belong to?

• A) A plant

• B) An animal

• C) A bacterium

• D) A virus

A microscope image reveals a single-celled organism with ribosomes, DNA, cytoplasm, and a cell membrane, but no nucleus. How should this organism be classified?

• As a eukaryote

• As a prokaryote

• As a multicellular organism

• As a heterotroph

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NGSS.MS-LS1-1

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What technological advancement led to the discovery of cells?

• The invention of the telescope

• The development of the microscope

• The discovery of X-rays

• The use of artificial intelligence in science