Youngless: Biology Cell Theory and Cell Organelle

Cell membrane (plasma membrane)

phospholipid bilayer that surrounds all cells and regulates what enters and leaves the cell

Cell Wall

A rigid structure that surrounds the cell membrane and provides support to the plant cell

Nucleus

A part of the cell containing DNA and is the control center of the cell.

Ribosomes

Makes proteins for the cell

Cytoplasm

A jellylike fluid inside the cell; keeps organelles in place

Vesicle

A membrane bound sac that contains materials involved in transport of proteins throughout the cell.

Rough Endoplasmic Reticulum

Covered with ribosomes; makes proteins

Golgi Apparatus/Body

Works with ER and vesicles; Sort, Packages and Ships Proteins

Smooth Endoplasmic Reticulum

Makes lipids

Vacuole

Cell organelle that stores materials such as water, salts, proteins, and carbohydrates

Lysosome

Cell organelle filled with enzymes needed to break down certain materials in the cell

Chloroplast

An organelle found in plant and algae cells filled with chlorophyll and where photosynthesis occurs

Mitochondria

Powerhouse of the cell, organelle that is the site of cellular respiration (energy) production; turns food into energy

Cytoskeleton

A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement

Cilia

Many Hair like projections that extend from the plasma membrane and are used for movement

Flagella

2-3 long hair like projections used for movement

Centriole

Cell organelle that aids in cell division in animal cells only

Nucleolus

Found inside the nucleus and produces ribosomes

Central Vacuole

A large vacuole that rests at the center of most plant cells and is filled with a solution that contains a high concentration of solutes.

Prokaryotic

An organism whose cells do not have an enclosed nucleus, such as bacteria.

Eukaryotic

Cell with a nucleus (surrounded by its own membrane) and other internal organelles.

1. All living things are made of cells

2. Cells are the basic unit of structure and function in living things

3. New cells are produced from existing cells

What is the cell Theory?