2. About animal cells
• An animal cell is a form of eukaryotic
cell or cells with a membrane-bound
nucleus.
• They lack cell walls, plastids and
chloroplasts.
• The shape of the animal cell is not
rigid but is of any shape and size.
4. Organelles in an animal cell
• Cell • Mitochondrion
membrane
• Smooth ER
• Cytoplasm
• Vacuole
• Nucleus
• Ribosomes
• Rough ER
5. • Cell membrane
The animal cell has a plasma cell
membrane encloses the cell contents.
Its main function is to control what
gets into and out of the cell.
6. • Cytoplasm
The cytoplasm contains primarily
water and protein material. This is
where the other cell organelles
reside, and where most of the
cellular activities take place.
7. • Nucleus
The nucleus generally contains the
genetic material for the cell. Because
it contains the DNA and
chromosomes, which affect the
proteins that determine the activities
of the cell, the nucleus can be
considered to be the cell's control
center.
8. • Rough ER
The rough endoplasmic reticulum
manufactures membranes and
secretory proteins. The rough ER
also produces antibodies.
9. • Smooth ER
The smooth endoplasmic reticulum is
tubular in form and is involved in the
synthesis of phospholipids, the main
lipids in cell membranes.
10. • Vacoule
A vacuole is a membrane-bound
organelle which is present in all plant
and fungal cells and some protist,
animal and bacterial cells. It exports
unwanted substances from the cell.
11. • Ribosomes
Free ribosomes usually make
proteins that will function in the
cytosol, while bound ribosomes
usually make proteins that are
exported or included in the cell's
membranes.
12. • Mitochondrion
Mitochondria, known as the engine
house of the cells, are the organelles
that convert energy to forms that cells
can use for work. Oxygen combines
with glucose to form energy (ATP)
required for metabolism and cellular
activities in this organelle.
