Microscope
Measurement and Cells
Acid, Base, pH
Diffusion and Osmosis
100
The letter e
Objectives/objective lens
100
Organelle which is the site of steroid and lipid synthesis
The smooth endoplasmic reticulum
100
The parts of an atom and their charges.
Proton +
Neutron 0
Electron -
100
What is this process called?
Osmosis.
200
List the magnification(s) of the objective lens(es).
4x
10x
40x
100x
200
Convert 250cm to mm.
2500 mm
200
Define isotope.
Multiple forms of the same element containing equal numbers of protons but different numbers of neutrons. Differ in atomic mass, same atomic number.
200
Define active transport.
Movement of ions through proteins against the concentration gradient using ATP.
400
Calculate the total magnification for the 40x objective.
40x * 10x = 400x
400
List the two microscopic stains/dye.
Congo Red (Lugo's Iodine)
Methylene Blue
400
List the four major macromolecules.
Carbohydrates
Lipids
Proteins
Nucleic Acids
400
Define and give one example of a hypertonic solution.
Red blood cell in an extremely concentrated solution, water leaves cell and cell goes flat.
600
What is depth of field?
Distance between the nearest and farthest elements in a scene that appear to be sharp in an image.
600
How is a theory different from a hypothesis?
A hypothesis answers a question, its an assumption or prediction that can be tested through scientific experimentation.
A theory is a well tested explanation. Theories have been confirmed through evidence/studies/experimentation.
600
Which macromolecule is this?
Nucleic Acid
600
The four factors affecting diffusion rate.
Concentration gradient
Molecular size/permeability
Temperature
Pressure Gradient
800
Describe how you would prepare a wet mount.
Place the object in drop of water on clean slide.
Hold a coverslip at 45 degree angle with fingertips.
Lower the coverslip slowly.
800
List the basic units for temperature, weight, time and length. (5)
meter
liter
gram
second
Celsius
800
List the four functional groups of an amino acid.
Hydrogen
Carboxyl
Amine
R Group
800
What are the three types of passive transport and how does each work?
Simple diffusion - Diffusion of lipid soluble molecules through the lipid bilayer membrane
Facilitated diffusion - Diffusion of water soluble molecules through a carrier protein
Osmosis - Diffusion of water across a selectively permeable membrane, more permeable to water
1000
Two kinds of microscopes we used and what are they used for.
Compound/light microscope
Stereomicroscope
1000
List all 6 differences between plant and animal cells.
Plant: Centrioles absent. Cilia/flagella absent.
Animal: Cell wall absent. Chloroplasts absent. Plastids absent. Central vacuole absent.
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1000
What color does bromothymol blue become in
acidic,
basic,
neutral solutions?
Acidic - yellow
Basic - blue
Neutral - green
1000
Describe the results of the glucose, starch, iodine experiment, the direction of flow of each molecule.
Was the solution hypotonic or hypertonic and how do you know?
The dialysis tubing was permeable to glucose and iodine but not to starch. Starch has a larger molecule size.
Molecules entered the tubing causing swelling in the hypotonic solution.
