Passive
Movement across the cell membrane that does not require energy is call (active/passive) transport.
Gradient
The difference in the concentration of a substance across a space is called a concentration(equilibrium/gradient)
low
If there is a concentration gradient, substances will move from an area of high concentration to an area of (equal/low) concentration.
Selectively permeable
The cell membrane is (selectively permeable/impermeable).
Diffusion
(Equilibrium/Diffusion) is the simplest type of passive transport
Osmosis
The diffusion of water through a selectively permeable membrane is called (osmosis/diffusion)
Molecules
The direction of water movement across the cell membrane depends on the concentration of free water (molecules/solutions)
Hypotonic
A solution that causes a cell to swell is called a (hypertonic/hypotonic) solution.
Contractile vacuoles
Organelles that collect excess water inside the cell and force water out are called (diffusion organelles/contractile vacuoles)
Endocytosis
The process of taking material into the cell by in-folding the cell membrane is called (endocytosis/exocytosis)
facilitated
In (facilitated/molecular) diffusion, membrane proteins help molecules across the membrane.
Spread out
In diffusion, molecules (spread out/condense)
the cell membrane
The lipid bilayer describes (a type of transport/the cell membrane)
without
Facilitated diffusion moves substances down their concentration gradient (with/without) using the cell's energy
equal
In an isotonic solutions how are the arrows?
pointed in
In an hypotonic solution where are the arrows pointing?
pointed out
In an Hypertonic solution where are the arrows pointing?
Isotonic
10% salt and 10% salt solution
Hypotonic
2% salt and 10% salt
Hypertonic
30% salt and 10% salt
function of nucleus
Contains genetic material, controls the cell
purpose of plasma or cell membrane
Protects cell from its surroundings
cytoplasm
keeps everything in place in the cell
cytoplasm and plasma membrane
Which organelles are present in the diagrams of all three types of cells?
Plant and animal cells
Which cell types contain a nucleus
Vacuole, cell wall, chloroplasts
Which organelles were present in the Elodea cell diagram but absent in the cheek cell diagram
plant cells are long. Plant cells have chloroplast, the cell wall and vacuoles. The Animal Cell doesn't have any of those.
What are the differences between plant cells and animal cells
Plasma membrane(cell membrane)
Organelle Description: The unit membrane that encloses the entire cell.
Plasma membrane(cell membrane)
Organelle Function: Protects cell from surroundings
Endoplasmic Reticulum (ER)
Organelle Function: Fix cells if needed, help assemble proteins
Golgi Aparatus
Organelle Function: Prepares proteins for transport to other parts of the cell
Vacuoles
Organelle Function: Store bubbles containing food or waste.
Mitochondria
Organelle Function: Turns food into energy, cellular respiration
Ribosomes
Organelle Function: Protein builders, they connect one amino acid at a time and build chains
Chloroplasts
Organelle Function: Absorb sunlight and use water and carbon dioxide to produce food.
Genes
Organelle Function: Instructions to make molecules called proteins
Chromosomes
Organelle Function: Keep DNA tightly wrapped around spool-like proteins
Cell wall
Organelle Function: Used in protection and structure
Endoplasmic Reticulum(ER)
Organelle Description: System of channels, sacs, and tubes throughout the cytoplasm; continuous with plasma and nuclear membrane
Golgi apparatus
Organelle Description: Parallel layers of flattened sacs (like a stack of pancakes) with numerous small vesicles around the stack
Vacuoles
Organelle Description: Membrane enclosed, fluid filled sacs
Mitochondria
Organelle Description: Rodlike organelles bound by two unit membranes, the inner one of which has inward folds called cristae
Ribosomes
Organelle Description: Small protein/RNA particles located on outer surface of ER and free in cytoplasm
Chloroplasts
Organelle Description: Contain chlorophyll; surrounded by a double unit membrane
Genes
Organelle Description: Basic units of heredity; composed of long molecules of DNA
Chromosomes
Organelle Description: Elongate thread-like bodies clearly visible only when the cell divides; composed of protein, DNA
Cell Wall
Organelle Description: Composed of cellulose, a complex carbohydrate
eyepiece
You look into the microscope through this part
body tube
Light passes from the objective lens to the eyepiece through this part of the microscope
nosepiece
The objective lenses are mounted in this part of the microscope
objective lenses
There may be two or three of these mounted on the nosepiece. Each one magnifies a different power.
arm
This part supports the entire upper portion of the microscope
coarse adjustment knob
You begin your focusing with this part of the microscope
fine adjustment knob
Once the object that you would like to view comes into focus, you use this to fine tune the image
stage
The flat place under the objective lenses where you place the slide for viewing
stage clips
These two things keep the slide from moving around on the stage
slide
This is a thin piece of glass where you place your specimen
aperture
The opening in the center of the stage that allows light through so you can easily see the object on the slide
diaphragm
You can move this disk under the stage and control the amount of light that comes up through the aperature
mirror or lamp
This provides light so that it is easier to see the object that you are viewing
base
This is the support for the microscope that holds it up
legs
The mirror or lamp is located between these two things