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How can a Paramecium carry out all of life's functions?

• by having specialized cells

• by being larger than most organisms

• by being smaller than most organisms

• by performing all processes in one cell

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Which of these is a structure that is present in all organisms?

• a tissue

• a cell

• a stomach

• a brain

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Which BEST describes ALL unicellular organisms?

• Every cell is round

• Every cell can make food

• Every cell can move on its own

• Every cell performs all life functions

How are algae able to survive?

• The algae get energy from other algae.

• The algae do not require energy to survive.

• The single cell controls all the algae’s life processes.

• Other multi-celled organisms provide food for the algae.

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Which is an example of a single-celled organism?

• fish

• tree

• fungi

• human

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Max is comparing the characteristics of different types of organisms. Which best describes a difference between insects and bacteria?

• Insects are made of one cell, while bacteria are made of many cells.

• Bacteria are made of one cell, while insects are made of many cells.

• Insects require energy to perform life functions while bacteria do not.

• Bacteria require energy to perform life functions while insects do not.

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Which statement would most likely be found in an article about multi-celled organisms like plants?

• Plants have a simple structure.

• Plants contain only one cell that performs all functions.

• Plants do not need to eat, remove waste, or reproduce.

• Plants contain many specialized cells that perform different functions.

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How are multi-celled organisms different from single-celled organisms?

• Multi-celled organisms must reproduce.

• Multi-celled organisms must obtain energy.

• Multi-celled organisms have microscopic body structures.

• Multi-celled organisms have specialized cells to perform life functions.

How are single-celled organisms and multi-celled organisms similar?

• Both need food for energy and growth.

• Both have a skeletal system for support.

• Both require the interaction of many cells to survive.

• Both are able to carry out all life functions in only one cell.

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Which organism performs all life processes in one cell?

• grass

• bacteria

• butterfly

• mushroom

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