Test review for the Cell Transport Test tomorrow.
1. All living things are made of cells. 2. Cells are the basic units of structure and function in an Organism. 3. New cells are produced from existing cells.
Looked at a cork with a microscope and saw little structures he called "cells."
Anton van Leeuwenhoek
Looked at water with a microscope and saw tiny living organisms (microorganisms)
1st Level of Organization
2nd Level of Organization
3rd Level of Organization
4th Level of Organization
5th Level of Organization
process by which organisms maintain a relatively stable internal environment
NO NUCLEUS, No membrane-bound organelles, Most cells are simple. Evolved 3.5 billion years ago.
HAS Nucleus, MANY Organelles, Cells are complex. Evolved 1.5 billion years ago.
Things Cells have in Common
Cell Membrane, Cytoplasm, Genetic Material, Ribosomes
Things Plant Cells Have that Animal Cells Don't
Cell Wall, Vacuole, Chloroplast.
regulates what enters and leaves the cell
strong layer around the cell membrane in plants, algae, and some bacteria
Double-layered sheet that forms the core of nearly all cell membranes.
Helps move material across the membrane.
identifies the cell
Recieves chemical signals
1. No Energy is needed 2. Moves with the gradient. 3. Moves from high to low.
When molecules move from high to low.
A type of diffusion in which water goes from high to low.
When a protein channel helps a molecule move across the membrane.
Both sides of the membrane are equal
Moving Out of the Cell
Moving In the Cell
Moving In and Out of the Cell
1. Requires Energy 2. Move from low to high 3. Moves against the gradiant.
Cells bring in particles using the cell membrane.
Ingestion of large particles using energy.
Tiny pockets form along the cell membrane, and pinch off into vacuoles inside the cell.
Particles move out.
Vinegar; Out/Hypertonic, Syrup: Out/Hypertonic, Water: In/Hypotonic
Vinegar moved ________, Syrup moved ________, Water moved __________.
allowing (especially liquids) to pass or diffuse through
membranes that allow some substances through but not others
What indicates a positive test.
This size can diffuse faster then the other sizes.