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Self-Assessment

Cell Structure and Function

Click the button next to the response that best answers the question.

1. An element is
  • any substance that cannot be broken down into simpler substances.
  • formed by chemically combining two or more compounds.
  • any substance that contains carbon.
  • formed during the food-making process that takes place in plants.
2. Which statement is NOT part of the cell theory?
  • All living things are composed of cells.
  • Cells are the basic units of structure and function in living things.
  • All living things must have more than one cell.
  • All cells are produced from other cells.
3. What happens to the shape of a red blood cell when it is placed in a solution with a high salt concentration?
  • It doesn't change.
  • It swells as water moves into the cell.
  • It shrinks as water moves out of the cell.
  • It swells as water moves out of the cell.
4. Who was the first scientist to observe cells?
  • Anton von Leeuwenhoek
  • Robert Hooke
  • Matthias Schleiden
  • Rudolf Vircow
5. Active transport is the movement of
  • materials though a cell membrane using cellular energy.
  • water molecules through a selectively permeable membrane.
  • materials from an area of higher concentration to an area of lower concentration.
  • oxygen molecules across the cell membrane.
6. Who was the first scientist to observe cells?
  • Anton von Leeuwenhoek
  • Robert Hooke
  • Matthias Schleiden
  • Rudolf Vircow
7. Cells in many-celled organisms
  • often differ greatly from each other.
  • all have the same structure.
  • are all the same sizes.
  • never perform the same function.
8. Osmosis is an example of
  • active transport.
  • passive transport.
  • engulfing.
  • streaming.
9. Which organelle is referred to as the control center of the cell?
  • ribosome
  • Golgi body
  • mitochondria
  • nucleus
10. The passive transport of a molecule from the inside of a cell to the outside occurs when
  • the concentration of the molecule inside the cell is higher than outside.
  • the concentration of the molecule inside the cell is lower than outside.
  • the concentration of the molecule inside the cell is the same as outside.
  • a transport protein carries the molecule from the inside of a cell to the outside.