Unicellular and Multicellular Organisms Review

Which statement describes the cellular makeup of a deer?

• Deer are made of one cell that carries out one life process.

• Deer are made of one cell that carries out all different life processes.

• Deer are made of many cells that are specialized to carry out different life processes.

• Deer are made of many cells that carry out one life process. 

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Which characteristic best describes both amoebas and bacteria?

• abiotic

• multi-celled

• single-celled

• inorganic

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The smallest unit of a living thing that can carry out the basic processes of life.

• cytoplasm

• atom

• chlorophyll

• cell

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How is it possible for single-celled organisms to survive?

• They are small and can easily avoid predators.

• They have all of their needs met within one cell.

• They have adapted to live only in specific environments.

• They depend on other cells to obtain food, water, and other resources.

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Which is an example of a single-celled organism?

• amoeba

• insect

• fish

• worm

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Why do multicellular organisms need transport systems?

• Most have cells that are not able to exchange gases with the outside environment.

• Most have cells that are unable to grow and survive in their environment.

• Most have cells that need food from sources outside their environment.

• Most have cells that require more energy to survive than single-celled organisms.

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Which characteristic do single-celled organisms and multicellular organisms have in common?

• Both have cells with specialized functions for each life process.

• Both perform all life processes within one cell.

• Both have a way to get rid of waste materials.

• Both are able to make food from sunlight.

Which best describes a function of both multi-celled and single-celled organisms?

• to create specialized tissues

• to rely on specialized cells to complete certain tasks

• to obtain energy from nutrients to maintain life and growth

• to complete all life processes within a single cell

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Which organisms are capable of surviving as a single cell?

• algae

• humans

• plants

• mammals

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Which BEST describes ALL unicellular organisms?

• They can specialize to perform only one task.

• They can complete all life functions with a single cell.

• They require transport systems to stay alive.

• Their respiratory systems obtain oxygen for them.