Unit 2: Cells

The Cell Theory The cell is the basic unit of structure and function (a.k.a. – life) All living things are made up of 1 or more cells Cells come from other, preexisting cells (a.k.a. – reproduction)

What is a cell? It is the smallest unit of life that carries out life functions Animal Cell Plant Cell

What’s Inside? Organelles tiny structures within a cell that perform specific jobs to keep the cell alive

Important Organelles Cytoplasm - gel-like material inside cells

Important Organelles – Continued… Cell Membrane - protects cell and gives it shape and controls what enters and leaves the cell. Cell Membrane

Important Organelles – Continued… Nucleus - directs cell activities (brain) Nucleus

Important Organelles – Continued… Endoplasmic Reticulum (ER) - movement of materials throughout cell ER

Important Organelles – Continued… Ribosome - makes proteins Ribosomes

Important Organelles – Continued… Mitochondria - the powerhouse of the cell (converts food into energy for the cell) Mitochondria

Important Organelles – Continued… Chromatin/Chromosomes (DNA) - contains genetic information (inside the nucleus) Chromatin

Important Organelles – Continued… Chloroplast - takes energy from the sun and makes food for the PLANT cell (not found in Animal Cells) Chloroplast

Important Organelles – Continued… Cell Wall - supports and protects PLANT cells (not found in animal cells) Cell Wall

Important Organelles – Continued… Vacuole - storage of food and water Vacuole

Important Organelles – Continued… Golgi Body - packages and moves proteins Golgi Body

Important Organelles – Continued… Lysosome - digests wastes Lysosome