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Cells. Structure and Function. Cell Theory. All living things are made of cells. All cells come from preexisting cells. The cell is the basic unit of organization in living things. Two Types of Cells. Prokaryote. Cells that lack internal structures surrounded by membranes.
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Cells Structure and Function
Cell Theory • All living things are made of cells. • All cells come from preexisting cells. • The cell is the basic unit of organization in living things.
Prokaryote • Cells that lack internal structures surrounded by membranes. • Cells with no defined nucleus. The DNA is a circular strand.
Eukaryote • Cells with organelles surrounded by membranes.
Animal Cells • k • This is what your animal cells should have looked like! • Can you identify any parts?
Plant Cells • This is what your plant cells should have looked like. • What are the green structures?
Flip book of cell Organelles Title Page: Parts of a cell First Flap: Boundries Second Flap: Support and Locomotion Third Flap: Energy Fourth Flap: Assembly & Transport Fifth Flap: Storage Sixth Flap: Control
Boundries Boundries
Plasma Membrane • Selectively permeable • Controls what enters and leaves the cell. • Maintains chemical balance. • Defines the boundary of the cell.
Cell Wall • Gives a firm structure to plant cells. • Made mainly of cellulose.
Cytoplasm • Jelly-like substance that supports the organelles. • Many chemical reactions take place in the cytoplasm.
Cytoskeleton • Support • Scaffolding in the cytoplasm
Chloroplast • Contain pigments that absorb energy needed to run photosynthesis. • Found in plants and some protozoans.
Mitochondria • Produces energy for the cell.
Endoplasmicreticulum • System of passages that transport substances around the cell. • Two types: • smooth • rough (has ribosomes)
Ribosomes • Protein synthesis
Storage & Digestion Storage
Vacuoles • Membrane bound containers for storage and transport of substances in the cell.
Lysosome • Vacuole that contains digestive enzymes.
Golgi Apparatus • Membrane sacks that store newly produced proteins.
This page will have one drawing in the middle with four sections surrounding it.
Nucleus • Control center for the cell. • Contains the information for all cell activities. • Has a double, selectively permeable membrane.
Nucleolus • Produces ribosomes
Chromatin • Long strands of DNA that hold the directions for all cell activity.
Centrioles • Involved in cell division