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Biology
Review
39
Biology
9th Grade
01/12/2009

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Term
what are the parts of the microscope
Definition
eyepiece, arm, objective, stage clip, stage, course adjustment knob, fine adjustment knob, base, diaphragm, in stage condenser, light switch, in base illuminator
Term
what is the function of the eyepiece
Definition
allows you to look through it and see the specimen
Term
what is the function of the arm
Definition
allows you to carry the microscope
Term
what is the function of the objectives
Definition
magnifys for a closer view of the specimen
Term
what is the function of the stage clip
Definition
holds the specimen in place
Term
what is the function of the stage
Definition
holds the slide
Term
what is the function of the course adjustment and fine adjustment knob
Definition
to see the image clearer and closer
Term
what is the function of the base
Definition
it's the main part of the microscope for everything to sit on
Term
what is the function of the diaphragm
Definition
controls the light
Term
what objective do you use first
Definition
low; low to high
Term
what is the difference between magnification and resolution
Definition
magnification shows how much bigger you make the specimen and resolution shows how clearer the image is
Term
how do you handle a microscope safely
Definition
carry it with two hands
Term
how do you handle a problem in the lab
Definition
get the teacher right away
Term
name 4 safety precautions
Definition
wearing goggles, wearing gloves, cleaning up your mess, wearing your hair back
Term
what are the steps of the scientific method and what happens at each step
Definition
1.observe- gather info using your senses
2.ask a question, state the problem- stating what you know
3.research- look into the problem, find info
4.hypthesis- make an educated guess
5.experiment- test your hypthesis
6.observations- what you saw during the experiment
7.conslusion- summarizing your data
8.share your information- record your results, make a graph
Term
what is the difference between theory and law
Definition
theory can change over time, laws cannot be changed
Term
what is the difference between independent and dependent variable
Definition
independent variable is one YOU can change, dependent variables change based on the independent variable. one we measure or observe
Term
what is the difference between a control group and an experimental group
Definition
the control group doesnt change everything is compared to this group, and the experimental group is the one that has the changes and where the experiment is done upon
Term
what is the difference between an inference and an observation
Definition
an inference is what you assume based on what you know, an observation is what you see, hear, smell, etc.
Term
what is the difference between qualitative and quantitative
Definition
qualitative is the quality of something like the color or texture and quantitative is the amount of something
Term
what are the 6 characteristics of life and what to each of them mean
Definition
1. Cell Structure
- Unicellular: one cell
- Multicellular: more than one cell
2. Organisms are Organized
- Differentiation
- Compartmentalization: Cells have different compartments for different jobs
- Cells change for a special function
3. Energy
- Metabolism: to use energy and get rid of waste
- Autotrophs: make own food (almost all get energy from sun)
- Heterotrophs: get energy (food) from other sources
4. Homeostasis
- Adapt to keep internal conditions the same
5. Growth and Development
- Cell division: it grows by making more cells
- Development is the series of changes the cell organism goes through
6. Reproduction
- Necessary for survival, Deoxy Ribonucleic Acid (DNA)- has genetic information
Term
how many states of matter are there and what are they
Definition
4; solid, liquid, gas, plasma
Term
what is the difference between a plasma and a gas
Definition
a plasma is just like a guess except a plasma has positive and negative charges
Term
what's the difference between mass and wieght
Definition
mass is the amount of water and weight is the affect of gravity on matter
Term
why is carbon so important
Definition
it's in all living things
Term
anything that contains carbon is called what
Definition
an organic compound
Term
what kind of bonds can carbon have and why is it so important
Definition
single, double, and triple. it's important because the bonds allow to make different molecules
Term
what are four main types of macromolecules
Definition
carbohydrates, protiens, nucleic acids, lipids
Term
what is the monomer of a carbohydrate?
Definition
monosaccharide (simple sugar)
Term
what is the monomer of a protien
Definition
amino acids (20 different kinds)
Term
what is the monomer of a nucleic acid
Definition
nucleotide
Term
what is the monomer of a lipid
Definition
fatty acid
Term
endergonic reaction
Definition
takes in energy
Term
endergonic reaction
Definition
takes in energy
Term
exergonic reaction
Definition
releases energy
Term
why is water polar
Definition
the oxygen atom wants the electrons more than the hydrogen; uneven charges
Term
hydrolosis reaction
Definition
adding water; breaks a macromolecule
Term
condensation rection
Definition
taking away water; forming a macromolecule; splitting the monomers
Term
condensation rection
Definition
taking away water; forming a macromolecule by joining the two monomers
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