Eukaryote Cell Organelles Definitions Diagram | Quizlet

Cell Theory

-All living things are made up of cells.

-Cells are the smallest working units of all living things.

-All cells come from preexisting cells through cell division.

Definition of Cell

A cell is the smallest unit that is capable of performing life functions.

Examples of Cells

Red blood, amoeba, plant stem, bacteria

Two Types of Cells

Prokaryotic

Eukaryotic

Prokayote

-Do not have structures surrounded by membranes

-Few internal structures

-One-celled organisms, Bacteria

Eukaryotic

-Contain organelles surrounded by membranes

-Most living organisms

-plant and animal cells

TERM

Cell Membrane

DEFINITION

-Outer membrane of cell that controls movement in and out of the cell

-Double layer

Cell Wall

-Most commonly found in plant cells & bacteria

-Supports & protects cells

TERM

Nucleus

DEFINITION

-Directs cell activities

-Separated from cytoplasm by nuclear membrane

-Contains genetic material - DNA

TERM

Nuclear Membrane

DEFINITION

-Surrounds nucleus

-Made of two layers

Openings allow material to enter and leave nucleus

TERM

Chromosomes

DEFINITION

-In nucleus

-Made of DNA

-Contain instructions for traits & characteristics

TERM

Nucleolus

DEFINITION

-Inside nucleus

-Contains RNA to build proteins

TERM

Cytoplasm

DEFINITION

-Gel-like mixture

-Surrounded by cell membrane

-Contains hereditary material

TERM

Smooth Endoplasmic Reticulum

DEFINITION

-Moves materials around in cell

- lacks ribosomes

TERM

Ribosomes

DEFINITION

-Each cell contains thousands

-Make proteins

-Found on ER & floating throughout the cell

TERM

Mitochondria

DEFINITION

-Produces energy through chemical reactions - breaking down fats & carbohydrates

-Controls level of water and other materials in cell

-Recycles and decomposes proteins, fats, and carbohydrates

TERM

Golgi Bodies

DEFINITION

-Protein 'packaging plant'

-Move materials within the cell

-Move materials out of the cell

TERM

Lysosome

DEFINITION

-Digestive 'plant' for proteins, fats, and carbohydrates

-Transports undigested material to cell membrane for removal

-Cell breaks down if lysosome explodes

TERM

Vacuoles

DEFINITION

-Membrane-bound sacs for storage, digestion, and waste removal

-Contains water solution

-Help plants maintain shape

Chloroplast

-Usually found in plant cells

-Contains green chlorophyll

Where photosynthesis takes place

TERM

Rough Endoplasmic Reticulum

DEFINITION

-Moves materials around in cell

- ribosomes embedded in surface

TERM

Chromosomes

DEFINITION

-In nucleus

-Made of DNA

-Contain instructions for traits & characteristics

TERM

Nuclear Pore

DEFINITION

-Allows DNA in and out of Nucleus

TERM

Nuclear Pore

DEFINITION

Allows DNA in and out of Nucleus