Page 4 - Chapter 3: Cells and Tissues

h) Lysosomes act as intracellular housekeepers. ' Lysosomes are "digestive
bags" of the cells containing powerful enzymes.
i) The cytoskeleton provides shape and support to the cell.

J) Centrioles play a role in cell reproduction. They are rod-shaped bodies that
lie at right angles to each other.
Cells projections
a) Cilia are short, hairlike projections that move substances away, for
example the ciliated cells of the respiratory system.

b ) Flagella are long, hairlike projections; the sperm has a flagellum that
allows it to swim.
c) Microvilli are projections used by the cell for absorption of substances.
Example, the small intestines have these structures to absorb nutrients.

Cell Diversity
Erythrocyte