Discovering Cells
An instrument that makes small objects look larger
What is a microscope?
The gatekeeper of the cell
What is cell membrane?
The ____________ controls the materials that enter and leave the cells
cell membrane
Any substance that cant be broken down into simpler substances
What is an element?
Substances that can move into and out of a cell do so by two processes. What are those processes called?
Passive and Active Transport
A compound microscope with a 10x eyepiece and a 60x objective has a magnification of...
600x
This is only in plant cells and makes leaves green
What is chloroplasts?
Tiny cells structures that carry out specific functions in the cell
organelles
Form when two or more elements combine chemically
What is a compound?
In what way is the cell membrane like a gatekeeper?
it allows some materials and not others to pass in and out of the cell
How are magnification and resolution different?
Magnification makes objects look larger; resolution shows more detail.
What is the considered the powerhouse of the cell?
Mitochondria
A group of organs that work together to perform a major function
organ system
How many atoms form a water molecule?
3
Diffusion of water molecules across a selectively permeable membrane
Osmosis
the ability to distinguish between two near by objects
what is resolution?
Directs cell activities and acts as "brain" of the cell
Difference between multicellular vs. unicellular
multicellular means made of many cells and unicellular are single celled organisms
Fat, oils, and waxes are what?
What are lipids?
Use diffusion to tell what happens when you drop a sugar cube in water?
Sugar dissolves; molecules collide, moving from high concentration to low concentration.
2. Cells are the basic units of structure and function in living things
3. All Cells are produced from other cells
What is the Cell Theory?
What do ribosomes do?
Make proteins
Organization of your body - starting from smallest to biggest
cell, tissue, organ, organ system
Genetic material that carries information about an organism and is passed from parent to offspring
What is DNA?
Glucose enters a liver cell through a protein channel
What is facilitated diffusion?