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auburn biology 1021 lab final questions with correct answers 2024/2025
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auburn biology 1021 lab final questions with correct answers 2024/2025
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auburn biology 1021 lab finalLab 1: What did caffeine do to the heart rate of Daphnia? - ANSCaffeine sped up the heart
rate
Lab 1: What did ethanol do to the heart rate of the Daphnia? - ANSEthanol slowed it down
Lab 1: Anatomy of daphnia - ANS
Lab 1: Know major parts of dissecting scope - ANSLook in lab manual (1-4)
Lab 1: One or more factors that the scientist varies during the experiment - ANSIndependent
variable
Lab 1: A feature that the scientist measures in order to determine if it changes in response to
the independent variable - ANSDependent variable
range
median
mean
mode - ANSdifference between highest and lowest value
number in the middle
average
number that occurs the most
Lab 2: What solutions are used to test for the 4 types of organic molecules? - ANSIodine --
polysaccharide (starch)
Benedict's Reagent -- Sugar
Brown Paper Bag and Vegetable Oil--Lipids
Biuret Test - protein
Lab 2: What does a positive test look like for the vegetable oil test for lipids? Negative? -
ANSPositive vegetable oil test: 1 layer
Negative vegetable oil test: 2 layers
Lab 2: What does a positive test look like for the Biuret test for proteins? negative? -
ANSPositive Biuret Test: violet color
Negative Biuret Test: pinkish
Lab 2: What does a positive test look like for the Benedict's Reagent for sugar? -
ANSNEGATIVE: BLUE any other color is positive
green: very low
, yellow: low
yellow/orange: medium
orange: high
red/orange: very high
Lab 2: What does a positive test look like for the Iodine test for polysaccharides (starch) ? -
ANSPurple/blue/black indicates starch is present
Lab 2: Know functional groups - ANSSee lab manual
Don't worry about molecules in self test -- be able to identify functional groups in those
molecules tho
Lab 3: Study metric system chart - ANSlab manual
Lab 3: What is the formula for Celsius to Fahrenheit? - ANSF= (9/5)C + 32
Lab 3: What is the formula for Fahrenheit to Celsius? - ANSC= 5/9 (F- 32)
Lab 3: Compound scope magnification equation - ANSEyepiece magnification X scope
magnification
Lab 3: Resolution equation (know how to plug in numbers) - ANSr = 0.61 (lambda)/ N.A.
r: resolution
lambda: wavelength of light _ 0.54 micrometers = lambda
N.A.: numerical aperture of the objective lens
Lab 3: Know major parts of compound microscope - ANSlab manual
Lab 3: How do you estimate the length of a specimen? - ANSlow power: 4.2 mm
medium power: 1.4 mm
high power: 0.35 mm
multiply estimated length/ how much of field specimens takes up to the length of the field
Lab 4: Be able to identify cells and cell conditions - ANSLab manual/ in slides
Lab 4: Be able to identify items from cell ultrastructure images - ANSExamples in lab manual
and on canvas
Lab 5: How does the size of the molecule affect the rate of diffusion? - ANSThe larger the
size of the molecule, the less distance is traveled when diffused w/ another molecule
Lab 5: How does the temperature of the molecule affect the rate of diffusion? - ANSThe rate
of simple diffusion is increased when the temperature is increased
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