Cells

Parts of cell.

Cells Theory

All living things are composed of cells.

All cells come from pre-existing cells.

Cells are the smallest units of life.

Facts about Cells! Cells are too small to be seen with the eye

alone.

By using a microscope, many parts of a cell

can be seen.

Different cells in human body Our muscles are made of muscle

cells, our livers of liver cells, and

there are even very specialized

types of cells that make the enamel

for our teeth or the clear lenses in

our eyes!

Everything from reproduction to

infections to repairing a broken

bone happens down at the cellular

level.

Parts of Cells Cell membrane is a thin covering around the cell.

The cell membrane separates the inside parts of the cell

from the outside environment,

It gives the cell its shape,

It controls what goes into and out of it.

Located inside a cell is the cytoplasm. Cytoplasm is a

jellylike liquid.

Inside the cytoplasm is the cell's control center called the

nucleus. The nucleus contains all of the instructions for

running the cell.

Parts of Cells The nucleus is surrounded by the nuclear membrane.

The nuclear membrane controls what goes into and

comes out of the nucleus.

Mitochondria are shaped like kidney beans.

Mitochondria are important parts of a cell because

they help change food into energy. The cell uses the

energy to do its work.

Vacuole, are tiny oval structures that store food,

water, or wastes.

Parts of Animal Cell

Plant and Animal Cells

Plant cells tend to be spherical or to be rectangular,

while animal cells are at times irregular.

All cells, whether plant or animal, have these same

parts: cell membrane, cytoplasm, nucleus, nuclear

membrane, vacuoles, and mitochondria.

Plant cells, however, have two additional parts that

animal cells do not.

Additional parts of Plant Cell Plant cells have cell walls.

This sturdy layer around the cell membrane

supports and protects the cell.

Plant cells also contain chloroplasts.

Chloroplasts contain the green substance

called chlorophyll.

Chlorophyll traps energy from sunlight and

enables a plant to make its own food.

Plant Cell

Difference between plant and animal cell

Plant Cell

Animal cell

[Both] Shape: - Spherical or rectangular.

Shape: Irregular

Cell membrane, cytoplasm, nucleus, nuclear membrane, vacuoles mitochondria

.

Cell Wall

Chloroplast