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20 terms

Plant and Animal Cells - Sixth Grade

STUDY
PLAY
Cell Theory
All organisms are composed of cells
Cells are the smallest working units of all living things
All cells come from preexistin cells through cell division
What is a Cell?
A cell is the smallest unit that is capable of performing life functions
Prokaryotes
Do not have structures surrounded by membranes
Few internal structures
One-celled organisms: Bacteria
Eukaryotic
Contain organelles surrounded by membrane
Most living organisms
Cell Parts: Organelles
Organelles: organs for a cell
Cell membrane
Outer membrane of a cell that controls movement in and out of cells
Double layer
Phospholyphus
Cell wall: CELLulose
Undigestable
Found in plant / bacteria cells
Supports / protects cells
Inside of Cell
Directs cells activities
Contains DNA
Separated by cytoplasm by nuclear membrane
Nuclear Membrane
Surrounds nucleus
Made of two layers
Openings allow material to enter and leave nucleus
Chromosomes
In nucleus
Made of DNA
Contain instructions for traits and characteristics
Nucleolis
In nucleus
Contains RNA to build proteins
RNA + RNA = DNA
Cytoplasm
Gel-like mixture
Surrounded by cell membrane
Contains heriditary material
Endoplasmic Reticulum
Smooth types: lacks ribosomes
Rough types: ribosome ebbed on surface
Attached to / near cytoplasm
Ribosome
Each cell contains thousands
Make proteins / lipids
Found on cytoplasm and floating throughout the cell
Mitochrondria
Produces energy through chemical reactions - breaking down fats and carbohydrates
Controls level of water and other materials in cell
not attached to cytoplasm
Golgi Bodies
Protein packaging plant
Move material with cell
Move materials out of cell
Not attached to cytoplasm
Lysosomes
Digestive 'plant' for proteins, fats and carbohydrates
Transports undigested material to cell membrane
Cell breaks down if lysosomes explodes
Consumes mitochondria
Found in animal-cells because they need it more
One is found in plant cell
Vacuoles
Membrane - bound sace for storage, digestion and waste removal
Contains water solution
Helps plants maintain shape
Chloroplast
Usually found in plant cells
Contains green chlorophyll
Where photosynthesis occurs
Central Vacuole
Pulls water