Cells

This is about the cells and what they do.

The Prokaryotic Cell

Found only in bacteria. Antibiotics work only on this cell. Each prokaryotic cell has one capsule, cell wall, plasma membrane, cytoplasm, bacteria flagellum, nucleoid (holds circular DNA). Each prokaryotic cell has more than one ribosome.

Eukaryotic Cells

The embrane-bound structure that sets eukaryotic cells apart from prokaryotic cells is the nucleus, enclosed by the nuclear envelope, which contains the genetic material. Most of the eukaryotic cells also contain other membrane-bound organelles such as mitochondria or the Golgi apparatus. In addition, plants and algae contain chloroplasts. Many unicellular organisms are eukaryotes, such as protozoa. All multicellular organisms are eukaryotes, including animals, plants and fungi.

Plant Cells

Vacuole, a water-filled volume enclosed by a membrane known as the tonoplast.

A cell wall is composed of cellulose and hemicellulose, pectin. In many cases lignin, is secreted by the protoplast on the outside of the cell membrane.

Chloroplast contain chlorophyll, a green-colored pigment that absorbs sunlight, and allows the plant to make its own food in the process known as photosynthesis.

Cell Membrane controls what go in and what goes out.

Nucleus control every cell. It holds the DNA.

Cytoplasm (fluid that contains organelles)

Animal Cells


  1. Nucleolus: membrane around the Nucleus
  2. Nucleus: is the control center of the cell. holds DNA
  3. Mitochondrion: provides energy
  4. Vacuole: stores water, salts, proteins, and carbohydrates
  5. Cytosol: Fluid that contains organelles
  6. Lysosome: A small, round cell structure containing chemicals that break down large food particles into smaller ones
  7. Cell membrane: controls which substances can enter or leave the cell.

The Cell Theory

  1. All living organisms are composed of one or more cells.
  2. Basic unit of life.
  3. All cells arise from pre-existing, living cells.