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Download Lab Exam 1 | BIO 105 - General Biology I and more Quizzes Biology in PDF only on Docsity!
If you come up with a tentative explanation
for their dietary behavior then test your idea,
what kind of science are you performing?
Hypothesis-based science
TERM 2
Place the following steps in a scientific
investigation in their proper order:
Experiment, hypothesis, observation,
prediction, results, question, revise/repeat.
DEFINITION 2
ObservationQuestionHypothesisPredictionExperimentResultsRevi
TERM 3
What are all the levels of biological
organization from smallest to most inclusive?
DEFINITION 3
Atoms PopulationMolecules Community Organelle
EcosystemCell BiosphereTissueOrganOrgan systemOrganism
TERM 4
What are two types of scientific inquiry?
DEFINITION 4
Hypothesis-based sciencediscovery-based science
TERM 5
What must a good hypothesis
be?
DEFINITION 5
Both testable and falsifiable
What is a controlled experiment?
An experiment designed to test the effect of one variable by
testing control groups and experimental groups that differ in
only that one variable.
TERM 7
Which type of scientific inquiry is based on
observation and analysis of data?
DEFINITION 7
Discovery based science
TERM 8
What is inductive reasoning?
DEFINITION 8
Specific predictions -------> broad principles
TERM 9
What is deductive reasoning?
DEFINITION 9
Broad principles-------> specific predicitons
TERM 10
What is qualitative data?
DEFINITION 10
Descriptions, and observations rather than measurements.
What is a dependent variable?
The variable in an experiment that responds(effect)
TERM 17
What is an independent variable?
DEFINITION 17
The condition that varies resulting in an alteration in the
dependent variable (cause)
TERM 18
What is the bond formed between atoms in
organic compounds?
DEFINITION 18
covalent
TERM 19
How many covalent bonds can Hydrogen
have?
DEFINITION 19
TERM 20
How many covalent bonds can Oxygen have?
DEFINITION 20
How many covalent bonds can Nitrogen
have?
TERM 22
How many covalent bonds can Carbon have?
DEFINITION 22
TERM 23
How many covalent bonds can Phosphorus
have?
DEFINITION 23
TERM 24
Functional Groups:
DEFINITION 24
Components of organic molecules that are most commonly
involved in chemical reactions
TERM 25
Identify this functional group:
DEFINITION 25
Carboxyl groupCOOH
What are these structures, what is the
difference between them?
Saturated fatty acids on the top- have the maximum amount
of hydrogen atomsUnsaturated fatty acids on the bottom-
have double bonds between the Carbons and Hydrogens,
resulting in less Hydrogen atoms.
TERM 32
What is gel
electrophoresis?
DEFINITION 32
A technique that allows protein molecules to be separated
from each other based on their weights.
TERM 33
What gel is used in electrophoresis of small
proteins and nucleic acids?
DEFINITION 33
Polyacrylamide
TERM 34
Why is polyacrylamide or agarose used?
DEFINITION 34
It is porous in nature, allowing molecules to pass through
"wormholes"
TERM 35
When a molecule such as a protein is drawn
through a gel, what is the rate at which it
moves influenced by?
DEFINITION 35
It's weight.
Proteins that are smaller in size: While
proteins that are larger and heavier:
can easily maneuver their way through the wormholestravel
more slowly
TERM 37
What is the force that draws the proteins
through the gel in electrophoresis?
DEFINITION 37
Electricity
TERM 38
What charge does a protein carry in an
aqueous solution, and therefore in which
direction will it migrate towards?
DEFINITION 38
A protein carries a negative charge, and will migrate towards
the positive pole.
TERM 39
What is the purpose of Tris-Glycine SDS buffer
solution?
DEFINITION 39
It conducts electricity
TERM 40
Since the protein fragments are colorless,
what must be added to visually track the
proteins as they migrate?
DEFINITION 40
A blue bromophenol dye
What is Osmosis?
The movement of water through a semipermeable
membrane.
TERM 47
What conditions are necessary for Osmosis to
occur?
DEFINITION 47
1. Water2. Semipermeable membrane- mostly permeable to
water, selective when it comes to other solutes.3. There
should be a difference in concentration of solution in and out
of the membrane.
TERM 48
Tonicity is:
DEFINITION 48
The relative concentrations of the solutes in two fluids.
TERM 49
When two fluids contain equal concentrations
of a solute they are:
DEFINITION 49
isotonic
TERM 50
When one fluid contains fewer solutes and
more water it is:
DEFINITION 50
Hypotonic
When one fluid contains higher solutes and
less water it is:
Hypertonic
TERM 52
What is the name of the water channels
located in the lipid bilayer that allow water to
pass through the semipermeable membrane?
DEFINITION 52
aquaporins
TERM 53
Water will move from _______ to _______ in an
effort to reach equilibrium. (isotonic state)
DEFINITION 53
Hypotonic > Hypertonic
TERM 54
How does the surface area:volume ratio of a
cylinder correlate to the degree of perfusion
of acetic acid?
DEFINITION 54
Smaller surface area, absorbs acetic acid more rapidly than
cylinder with the largest surface area.
TERM 55
How does a small cell's surface area:volume
ratio compare to a larger cells surface
area:volume ratio, and therefore why are
cells small?
DEFINITION 55
Small cells can fulfill their needs for raw materials faster and
more efficiently than a large cell can. Cells can't grow any
larger, because as they do, their ability to fulfill their need
for raw materials in a short amount of time will decrease and
they will not survive.
