7th Grade 1st 9 Weeks Review

A table listing the functions of cells from different organisms is provided. What part of the cell theory does the information in the table relate to?

• All living things are made up of cells.

• New cells come from existing cells.

• Cells contain genetic material in the nucleus.

• All cells perform similar necessary functions.

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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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NGSS.MS-LS1-1

Which of the following statements supports the idea from the cell theory that cells extract energy from food to sustain life?

• Yeast are living organisms made up of one cell.

• A Paramecium breaks down organic matter to live.

• Unicellular bacteria represent the most basic unit of life.

• An E. coli cell divides in half, forming two daughter cells.

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What sort of evidence would support at least one of the components of the cell theory?

• Rocks and other nonliving things are not composed of cells.

• Cells are observed converting one form of energy into another.

• A microscope is necessary to make observations of nearly all cells.

• The origin of all cells observed can be traced to previous cells.

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NGSS.MS-LS1-1

The number of cells in two separate petri dishes was recorded over a period of 20 days. The data shown in the table best illustrates which part of the cell theory?

• All living things are made up of cells.

• Cells are the basic unit of living things.

• Organisms can be single celled or many celled.

• All cells come from preexisting cells.

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NGSS.MS-LS1-1

Which of the following lists includes cellular structures found in both plant and animal cells?

• Chloroplasts, cell wall, cell membrane, cytoplasm

• Vacuoles, cell membrane, nucleus, mitochondria

• Cell membrane, cytoplasm, nucleus, cell wall

• Chloroplasts, vacuoles, cell wall, cytoplasm

In an organism, the brain directs the body how to respond to stimuli from the environment. In a cell, this function is performed by the–

• cell membrane

• chloroplasts

• mitochondria

• nucleus

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Two unlabeled slides are viewed under a microscope. Slide A has cells with a visible nucleus, mitochondria, a cell membrane, a cell wall, and chloroplasts. Slide B has cells with a visible nucleus, mitochondria, and a cell membrane. How should these slides be labeled?

• Slide A, animal cells; Slide B, animal cells

• Slide A, animal cells; Slide B, plant cells

• Slide A, plant cells; Slide B, animal cells

• Slide A, plant cells; Slide B, plant cells

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Which of the following structures can help differentiate between a plant cell and an animal cell?

• Mitochondria

• Nucleus

• Chloroplast

• Cell membrane

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Vacuoles are round organelles found in both plant and animal cells. Their primary function is to -

• produce food and energy for the cell.

• control the activities of the cell.

• transport materials between parts of the cell.

• store water, waste, and nutrients for the cell.

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