The basic structure and function of cells
-
Upload
ita-rodriguez -
Category
Science
-
view
457 -
download
3
description
Transcript of The basic structure and function of cells
The Basic Structure and Function of Cells
By Ita P. Rodríguez
3rd Grade
Definition of Cells
• Cells are the basic building blocks of living organisms
–Just like brick can be a building block of a house
Definition of Cells
• Cells are so small you cannot see them with your naked eye
–you need a microscope
Purpose of Cells
• The main purpose of a cell is to organize
–Cells hold different pieces and each cell has a different set of jobs
–Cells are small compartments that hold all of the biological equipment necessary to keep an organism alive and successful on Earth
Purpose of Cells
Types of Cells
• There are many types of cells–They can have different shapes and sizes
Smallest Cells: Longest Cells: Biggest Cells:
6 inches long, 5 inches wide, 3 pounds
Ostrich Egg
Types of Cells
• There are many types of cells–We will discuss animal cells and plants cells
Animal Cells
• Animal cells are eukaryotic (it means they have a nucleus)
Vacuole
Cell Parts
• Nucleus: controls the cell–It helps control eating, movement, and
reproduction just like a brain in animals–The nucleus is not always in the center of the
cell, but you won't find it near the edge of a cell because it's dangerous
Cell Parts
• Mitochondrion: gives the cell energy –converts energy stored in food into usable
energy for work
Cell Parts
• Vacuole: contains the waste or trash
Cell Parts
• Ribosomes: makes the proteins for the cell
Cell Parts
• Golgi Apparatus: packs protein–it receives, processes, packages, and ships
protein
Cell Parts
• Cytoplasm: jelly-like fluid that holds the cell in place
–contains salts, minerals and organic molecules–surrounds the other parts
Cell Parts
• Cell Membrane: the structure that separates the inside of the cell from the outside of the cell
Cell Parts
• Lysosome: purpose is to digest things–breaks down food particles, invading objects,
or worn out cell parts
Plant Cells
• Plant cells are eukaryotic (it means they have a nucleus)
Plant CellsRibosomes
Cell Parts
• Cell Wall: purpose is to help the plant keep its shape
–It's like taking a water balloon and putting it in a cardboard box. The balloon is protected from the outside world.
Cell Parts
• Chloroplast: are the food producers of the cell
–they create sugars that the plant uses
Comparing Animal and Plant Cells
• Look closely at the similarities and differences between an animal cell and a plant cell
THE END