Cell Homeostasis SSA Review Worksheet

An Amoeba is a unicellular, animal-like protist that lives in ponds and streams. According to cell theory, where did this cell come from?

• another pre-existing amoeba cell.
• energy from sun that allowed the protist to reproduce.
• a multicellular organism.
• the nonliving environment.

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Which of the following is NOT a cell theory.

• All non-living things are made of cells
• All cells come from pre-existing cells
• Cells are the basic unit of structure and function of all living things

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NGSS.MS-LS1-1

Which of the following statements is not part of the cell theory?

• Cells are the basic unit of structure and function in all living things.
• All cells are produced from other cells.
• Only animal cells are composed of cells.
• All living things are composed of cells.

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NGSS.MS-LS1-1

In order to sustain life, all cells must...

• digest nutrients and water
• excrete waste and fluids
• must be able to maintain a homeostasis environment (aka cellular respiration and regulation)
• All of the above

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What is one way in which all living things on Earth are alike?

• All living things have hair.
• All living things are made of cells and come from other cells.
• The cells of all living things have chloroplast.
• All living things can move. 

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NGSS.MS-LS1-1

How does a cell maintain homeostasis?

• Regulates what enters and leaves the cell
• Flexibility
• Protective barrier
• Structure and support

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The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell
• Certain things can enter while others cannot
• The cell manually sorts through all materials
• Only certain cells can interact with the cell.

If a piece of bread is left out in the air for several days, there is a good chance that mold will appear on the bread. Where does the bread mold come from?

• Mold already exists in the bread, and it expands when it is exposed to air

• It grows from cells contained in mold spores, which are carried in the air

• It is produced by spontaneous generation if the conditions are right

• Bread mold can grow from any type of cell that touches the bread

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If a person cuts his or her finger, eventually the cut will heal, and the skin will be whole again. How does the gap created by the cut get filled?

• Cells below the cut make copies of themselves and the new cells fill the gap

• Cells on either side of the cut pull towards each other until they close the gap

• Cells are harvested from other parts of the body and brought to fill the gap

• Cells in the escaping blood get caught in the opening and become skin cells

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