Cells

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Across
  1. 2. A substance that is like air and has no fixed shape.
  2. 4. A cell is normally present in blood.
  3. 5. Responsible for holding the components of the cell and protects them from damage.
  4. 7. The outer covering of a cell, present adjacent to the cell membrane, which is also called the plasma membrane.
  5. 8. Specialized animal cell which can shorten its length using a series of motor proteins specially arranged within the cell.
Down
  1. 1. A type of blood cell that is made in the bone marrow and found in the blood.
  2. 3. Male reproductive cells that originate in the testicles.
  3. 5. Separates the interior of the cell from the outside environment.
  4. 6. Membrane-bound cell organelle.