Cell Theory and Living Things

Which of the following best describes the relationship between cells and living things in general?

• The larger the living thing, the larger its cells.

• All living things are made up of one or more cells.

• The number of cells in all living things is the same.

• There is one kind of cell of which all living things are made.

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A new species of living thing is discovered. The cell theory states that which of the following must be true about this new living thing?

• It must be made up of one or more cells.

• Its cells must be able to make their own food.

• All of its cells must perform the same function.

• Some of its cells must include a cell wall.

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What sort of evidence must be gathered to support the idea that all living things are composed of cells?

• Comparisons should be made between non-living things and living things to determine any similarities in structure.

• Samples of many kinds of living things should be examined under a microscope to identify the presence of cells.

• The functions of cells from many different living things should be monitored to see if they are identical.

• Non-living things should be examined to verify that the smaller parts of which they are composed are not cells.

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Which statement about the cell theory is correct?

• New cells form from old cells that have died.

• Cell organelles are the smallest units of life.

• All cells have the same internal structures.

• All living things are made up of cells.

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The cell theory holds true for multicellular and unicellular organisms. Which of the following is NOT true of the cell theory?

• Organisms are made up of one or more cells.

• The cell is the basic structural unit of all organisms.

• All cells are considered to be nonliving.

• An organism may consist of one single cell.

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A scientist has discovered an unidentified organism. The cell theory states that which of the following must be true about this new living thing?

• Its cells come from preexisting cells.

• All its cells have different functions.

• It is not made up of cells.

• All its cells are considered nonliving.

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Many scientists, including Matthias Schleiden and Theodor Schwann, contributed to the cell theory. Which of the following is NOT one of the basic components of the cell theory?

• Cells are the basic units of organisms.

• All living things are composed of cells.

• Cells can arise only from other cells.

• All cells must eventually die.

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The cell theory was formulated only after the invention of the microscope. To which aspect of the cell theory did the microscope first contribute?

• All organisms are composed of cells.

• All cells perform similar functions.

• New cells arise from preexisting cells.

• Only plant cells contain a cell wall.

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A student is learning about cell theory in science class, and she applies it to a fern that she is growing in her bedroom. The cell theory states that which of the following characteristics of the fern must be true?

• The fern's cells came into existence spontaneously.

• The fern is made up of a collection of cells.

• The cells that make up the fern are nonliving.

• The fern is made up of compounds that are not cells.

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An amoeba is a one-celled organism. The cell theory states that which of the following characteristics of amoebas must be true?

• All amoebas have a regular, spherical shape.

• All amoebas move rapidly using a cilia.

• All amoebas have organelles called chloroplasts.

• All amoebas come from other amoebas.

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