Bio Lab 2 Practical UPDATED ACTUAL
Exam Questions and CORRECT Answers
In addition to the four major macromolecules (carbohydrates, lipid, protein, nucleic acids), what
are the other nutritional requirements of our bodies? - CORRECT ANSWER - vitamins
and minerals
How do we obtain the major macromolecules that our bodies need? - CORRECT
ANSWER - common foods
A standardized variable is.. - CORRECT ANSWER - variable held constant during an
experiment
In the CRAAP test, why is it important to check the currency? - CORRECT ANSWER -
Important that information be dated, recent, updated so that it is not out of date
In a lab, 6 tanks of frogs were exposed to 6 different levels of UV-B radiation. The % of frogs
with hind limb or digit deformities was determined. Explainthe term standardized variable(s) and
what it is/are/might be in this experiment. - CORRECT ANSWER - Standardized variable
held constant- same water, light, food, # of frogs/tank, etc.
If I use the 10x eyepiece and the 10x objective, what is the magnification? - CORRECT
ANSWER - 100 diameters
The major macromolecules found in living organisms are... - CORRECT ANSWER -
carbohydrates, nucleic acids, proteins, lipids
Which of the four major macromolecules was not tested for? - CORRECT ANSWER -
Nucleic Acids
Biuret's Reagent is an indicator for the presence of .... - CORRECT ANSWER - proteins
, In a lab, frogs were raised with or without atrazine (a chemical) in their water. The percentage of
frogs with deformities was counted. Is this experiment controlled or comparative? What is the
dependent variable? - CORRECT ANSWER - controlled, % of frogs with deformities
You are looking up information for your lab report. Which below is the Most reliable website to
use? - CORRECT ANSWER - Website published/updated within the last month
A dependent variable is.. - CORRECT ANSWER - factor showing response
To find the magnification of an object viewed in a microscope... - CORRECT ANSWER -
multiply the objective by the ocular
Stains combine with what to increase contrast of cells under the microscope? - CORRECT
ANSWER - low power, stage all the way up
The computer program modeled facilitated transport. Compare/ contrast facilitated diffusion to
active transport. - CORRECT ANSWER - Both use a carrier that is specific but active
transport uses ATP to transport substance from low to high concentration. While facilitated
diffusion is passive transport allowing substance to go from high to low concentration
In lab you put starch and sugar solutions inside the dialysis tubing. You ended up with starch
only inside the bag and not outside Why? - CORRECT ANSWER - Starch was too large to
diffuse through the membranes
Define enzyme. - CORRECT ANSWER - Catalyst that speeds up a chemical reaction
without being used up in the process
In a hypotonic solution, a cell will... - CORRECT ANSWER - swell
In a hypertonic solution, a cell will... - CORRECT ANSWER - shrink
Exam Questions and CORRECT Answers
In addition to the four major macromolecules (carbohydrates, lipid, protein, nucleic acids), what
are the other nutritional requirements of our bodies? - CORRECT ANSWER - vitamins
and minerals
How do we obtain the major macromolecules that our bodies need? - CORRECT
ANSWER - common foods
A standardized variable is.. - CORRECT ANSWER - variable held constant during an
experiment
In the CRAAP test, why is it important to check the currency? - CORRECT ANSWER -
Important that information be dated, recent, updated so that it is not out of date
In a lab, 6 tanks of frogs were exposed to 6 different levels of UV-B radiation. The % of frogs
with hind limb or digit deformities was determined. Explainthe term standardized variable(s) and
what it is/are/might be in this experiment. - CORRECT ANSWER - Standardized variable
held constant- same water, light, food, # of frogs/tank, etc.
If I use the 10x eyepiece and the 10x objective, what is the magnification? - CORRECT
ANSWER - 100 diameters
The major macromolecules found in living organisms are... - CORRECT ANSWER -
carbohydrates, nucleic acids, proteins, lipids
Which of the four major macromolecules was not tested for? - CORRECT ANSWER -
Nucleic Acids
Biuret's Reagent is an indicator for the presence of .... - CORRECT ANSWER - proteins
, In a lab, frogs were raised with or without atrazine (a chemical) in their water. The percentage of
frogs with deformities was counted. Is this experiment controlled or comparative? What is the
dependent variable? - CORRECT ANSWER - controlled, % of frogs with deformities
You are looking up information for your lab report. Which below is the Most reliable website to
use? - CORRECT ANSWER - Website published/updated within the last month
A dependent variable is.. - CORRECT ANSWER - factor showing response
To find the magnification of an object viewed in a microscope... - CORRECT ANSWER -
multiply the objective by the ocular
Stains combine with what to increase contrast of cells under the microscope? - CORRECT
ANSWER - low power, stage all the way up
The computer program modeled facilitated transport. Compare/ contrast facilitated diffusion to
active transport. - CORRECT ANSWER - Both use a carrier that is specific but active
transport uses ATP to transport substance from low to high concentration. While facilitated
diffusion is passive transport allowing substance to go from high to low concentration
In lab you put starch and sugar solutions inside the dialysis tubing. You ended up with starch
only inside the bag and not outside Why? - CORRECT ANSWER - Starch was too large to
diffuse through the membranes
Define enzyme. - CORRECT ANSWER - Catalyst that speeds up a chemical reaction
without being used up in the process
In a hypotonic solution, a cell will... - CORRECT ANSWER - swell
In a hypertonic solution, a cell will... - CORRECT ANSWER - shrink
