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Cell Organelles
Description of cell organelles
15
Science
7th Grade
01/06/2017

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Term
Cells
Definition

The smallest unit that can perform all functions necessary for life
 
Term
Cell Wall
Definition
Rigid, protective barrier
Found in plant and bacterial cells, NOT in animal cells
 
Term
Cell Membrane
Definition

Boundary of the cell

 

Surrounds the cytoplasm of the cell and seperate the intracellular components from the extracellular environment

 

Regulates what enters and exits the cell

Term
Cytoplasm
Definition

Jelly-like fluid that fills the gap between the nucleous and the cell membrane

 

Provides support to the organelles as it surrounds them

 

Maintains the shape and consistency of the cell

 

Helps exchange the chemicals between the organelles

Term
Nucleus
Definition

Control center of the cell

 

Contains the cell's DNA

 

Is considered the "brain" of the cell

 

Surrounded by a double membrane

 

Usually the easiest organelle to see under a microscope

Term
Nucleolus
Definition

Located within the nucleus

 

It is the ribosome factory

Term
Ribosomes
Definition

Sites of protein synthesis (where proteins are made)

 

Found attached to the rough ER or floating free in the cytoplams

 

Produced in the part of the nucleus calld the nucleolus

Term
Endoplasmic Reticulum 
Definition

Connected to the nuclear membrane 

 

"Highway" or "transportation network" of the cell 

 

 

Term
Rough ER
Definition

Studded with ribosomes; it makes proteins

Term
Smooth ER
Definition

Part of the endoplasmic reticulum that does not contain ribosomes

Term
Central Vacuole
Definition

Usually found in plant cells

 

Storage containers for water, food, enzymes, wastes and pigments

Term
Lysosomes
Definition

Contain digestive enzymes that break down wastes

 

Garbage disposal of the cell

 

Called "suicide sacs" because they are responsible for the cell death when they release enzymes

Term

Golgi Complex (Golgi Apparatus)

Definition

Looks like a stack of soggy plates

 

Its job is to store, modify and package proteins

 

Produces vesicles which carry secretions to the cell surface

Term
Mitochondria
Definition

Known as the "powerhouses of the cell"

 

Cellular respiration occurs here to release energy for the cell to use

 

Bound by a double membrane

 

Has its own strand of DNA

Term
Chloroplasts
Definition

Found only in plant cells

 

Capture the light energy necessary for photosynthesis

 

Contain the green pigment chlorophyll

 

Site of food (glucose) production

 

Surrounded by a double membrane

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