SSA Review week 2 life science

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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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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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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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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When blood flow is gone from the extremities for too long, the cells start to die. Depending on the severity of the damage, new cells will either replace the old or that part of the body that is lost to frost bite. Which system was MOST responsible for Randy’s frostbite?

• Nervous

• Circulatory

• Musculoskeletal

• REspiratory