Cell Theory

All cells must carry out three basic functions to grow and pass on life. How do cells perform these three basic functions?

• They use a source of energy, release waste and form new cells

• They send out signals, extract food and breathe carbon dioxide

• They develop new tissues, make fats, and form new cells

• They drink water, breathe oxygen and release waste.

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Cells must be able to perform certain functions in order to survive. Which of the following must all cells do to survive?

• obtain energy

• use oxygen

• absorb waste

• continue growing

_______ are the smallest units of life because they grow, reproduce, respond, and use energy.

• atoms

• elements

• cells

• all of the above

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Cells come from______.

• other preexisting cells

• cytoplasm

• organelles

• prokaryotes

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The cell theory states that_________

• cells come from cells

• all organisms are made of cells

• cells are the basic unit of structure and function for life

• all of the above

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Regardless of type, all cells

• have a cell membrane

• have cytoplasm

• can duplicate themselves by undergoing cell division

• all of the above

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________ is the scientist who saw small chambers when looking at cork, and named them “cells”.

• Newton

• Hooke

• Carson

• Manning

The size of an organism is determined -

• by the size of the cells that make up the organism.

• by the number of cells that the organism has.

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A multicellular organism is made of

• one cell

• multiple cells

• unicellular cells

• there is no such thing as a "multicellular" organism

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One common feature of all cells is their ability to -

• work with other cells in a "unicellular" organism.

• reproduce themselves.

• be formed by spontaneous generation.

• exist without needing a cell membrane

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