Biology 1107 Lab Practical (2025)
Actual Exam Questions and Answers
A+ Graded
Describe .the .kind .of .information .that .should .appear .in .the .introduction .of .a .lab
.report .- .CORRECT .ANSWER-In .the .introduction .of .a .lab .report .should .have
.information .on .the .topic .of .the .lab .and .the .procedure/ .purpose .of .the
.experiment. .it .should .also .as .well .have .the .materials .that .you .will .need .to .be
.fully .prepared .and .have .equations .and .conversions .to .help .you .solve .the
.problems .and .questions .the .lab .might .need .you .to .sovle .or .answer.
Hypothesis: .If .plants .are .watered, .then .growth .height .will .increase.
What .is .the .independent .variable? .- .CORRECT .ANSWER-Presence .of .water
Hypothesis: .If .plants .are .watered, .then .growth .height .will .increase.
What .is .the .dependent .variable? .- .CORRECT .ANSWER-Height .of .plants
Consider .the .scenario .below. .Identify .the .independent .variable, .the .dependent
.variable, .and .write .a .hypothesis .in .the ."If, .then" .format. .Do .not .worry .about
.whether .or .not .the .scenario .presents .a .good .experiment.
Scenario: .Evan's .nightly .chores .include .washing .dishes. .His .mother .cooks
.everything .a .bit .too .long. .Because .of .this, .Evan .spends .a .lot .of .sweat, .effort,
.and .time .washing .dishes. .He .sees .a .commercial .on .television .that .claims .a
.new .dishwashing .detergent, .called .Brand .X, .cuts .through .grease .better .than .its
.competitor, .Brand .Y. .The .advertising .for .Brand .X .backs .up .their .claim .with
.customer .testimonials. .- .CORRECT .ANSWER-IV: .dishwashing .detergent
DV: .time .to .wash .dishes/ability .to .cut .through .grease
The .results .and .discussion .sections .are .related, .but .there .are .key .differences
.in .the .type .of .information .that .should .be .present .in .each .section. .Contrast .the
.proper .content .of .these .two .sections. .- .CORRECT .ANSWER-The .result .and
.discussion .sections .are .similiar .as .in .they .both .take .place .at .the .end .of .the
.experiment/ .lab .and .they .are .were .the .last .final .thoughts .are .about .the .lab .are
.displayed. .The .difference .between .the .two .is .that .the .results .section .is .entirely
.for .reviewing .the .results .and .the .discussion .part .is .entirely .for .discussing .the
.results .from .the .lab. .The .results .section .also .describes .the .experiment .when
, .its .completed .and .the .discussion .section .is .where .you .not .only .discuss .the
.results .but .also .summarize .and .interpret .your .main .findings .in .the .study/ .lab.
All .lab .reports .need .parenthetical .citations .and .a .Literature .Cited .section. .-
.CORRECT .ANSWER-True
Read .the .excerpt .below, .then .determine .in .which .section .of .a .lab .report .this
.passage .should .be .found.
"Chromatography .uses .the .different .properties .of .amino .acids .such .as .whether
.its .hydrophilic .or .polar, .hydrophobic .or .non-polar, .characteristics .of .their .R-
group, .the .size, .and .the .charge .of .the .amino .acid .(Lombard .et .al., .2018, .p. .18).
.By .putting .a .sample .of .the .different .amino .acids .being .tested .on .the .paper
.matrix .and .dip .the .paper .into .the .solvent .and .letting .it .stand .over .time, .we .will
.be .able .to .observe .and .record .the .distance .travelled .from .the .starting .point
.and .the .color .of .the .amino .acid. .The .rate .of .how .fast .the .sample .travels .up .the
.matrix .is .dependent .on .the .degree .of .adsorption .to .the .matric .and .solubility .in
.the .solvent .(Lombard .et. .al., .2018, .p. .18)." .- .CORRECT .ANSWER-Introduction
Read .the .excerpt .below, .then .determine .in .which .section .of .a .lab .report .this
.passage .should .be .found.
"The .Rf .values .of .the .six .amino .acids .(aspartic .acid, .histidine, .leucine, .lysine,
.proline, .and .valine) .were .0.6875, .0.2125, .0.65, .0.1875, .0.375, .and .0.575." .-
.CORRECT .ANSWER-Results
Read .the .excerpt .below, .then .determine .in .which .section .of .a .lab .report .this
.passage .should .be .found.
"When .testing .the .amino .acids, .the .Rf .values .of .glutamic .acid .(0.6875) .and
.proline .(0.375) .were .closest .to .the .Rf .values .of .unknown .A .(0.05 .and .0.39375).
.The .colors .of .the .two .amino .acids .and .unknown .X .were .also .the .same .colors
.being .green .and .orange. .The .Rf .values .of .Isoleucine .(0.1875) .and .Cysteine
.(0.575) .were .close .to .the .value .of .the .spots .in .unknown .B .(0.2375 .and .0.55).
.The .colors .were .also .the .same .between .these .amino .acids .all .being .blue. .From
.these .results .one .can .also .determine .that .isoleucine .is .the .least .polar .as .it
.traveled .the .least .and .glutamic .acid .is .the .most .polar .as .it .traveled .the .most." .-
.CORRECT .ANSWER-Discussion
Read .the .excerpt .below, .then .determine .in .which .section .of .a .lab .report .this
.passage .should .be .found.
"If .we .place .the .polar .paper .matrix .into .the .nonpolar .solvent .after .putting .the
.different .amino .acids .on .it, .then .nonpolar .amino .acids .will .migrate .the .greatest
.distance, .giving .the .highest .Rf .value." .- .CORRECT .ANSWER-Introduction
This .question .refers .to .your .results .for .the .Paper .Chromatography .experiment.
Identify .the .two .amino .acids .in .Unknown .X. .- .CORRECT .ANSWER-Lysine
Leucine
This .question .refers .to .your .results .for .the .Paper .Chromatography .experiment.
Identify .the .two .amino .acids .in .Unknown .Y. .- .CORRECT .ANSWER-Aspartic .acid
Valine
Actual Exam Questions and Answers
A+ Graded
Describe .the .kind .of .information .that .should .appear .in .the .introduction .of .a .lab
.report .- .CORRECT .ANSWER-In .the .introduction .of .a .lab .report .should .have
.information .on .the .topic .of .the .lab .and .the .procedure/ .purpose .of .the
.experiment. .it .should .also .as .well .have .the .materials .that .you .will .need .to .be
.fully .prepared .and .have .equations .and .conversions .to .help .you .solve .the
.problems .and .questions .the .lab .might .need .you .to .sovle .or .answer.
Hypothesis: .If .plants .are .watered, .then .growth .height .will .increase.
What .is .the .independent .variable? .- .CORRECT .ANSWER-Presence .of .water
Hypothesis: .If .plants .are .watered, .then .growth .height .will .increase.
What .is .the .dependent .variable? .- .CORRECT .ANSWER-Height .of .plants
Consider .the .scenario .below. .Identify .the .independent .variable, .the .dependent
.variable, .and .write .a .hypothesis .in .the ."If, .then" .format. .Do .not .worry .about
.whether .or .not .the .scenario .presents .a .good .experiment.
Scenario: .Evan's .nightly .chores .include .washing .dishes. .His .mother .cooks
.everything .a .bit .too .long. .Because .of .this, .Evan .spends .a .lot .of .sweat, .effort,
.and .time .washing .dishes. .He .sees .a .commercial .on .television .that .claims .a
.new .dishwashing .detergent, .called .Brand .X, .cuts .through .grease .better .than .its
.competitor, .Brand .Y. .The .advertising .for .Brand .X .backs .up .their .claim .with
.customer .testimonials. .- .CORRECT .ANSWER-IV: .dishwashing .detergent
DV: .time .to .wash .dishes/ability .to .cut .through .grease
The .results .and .discussion .sections .are .related, .but .there .are .key .differences
.in .the .type .of .information .that .should .be .present .in .each .section. .Contrast .the
.proper .content .of .these .two .sections. .- .CORRECT .ANSWER-The .result .and
.discussion .sections .are .similiar .as .in .they .both .take .place .at .the .end .of .the
.experiment/ .lab .and .they .are .were .the .last .final .thoughts .are .about .the .lab .are
.displayed. .The .difference .between .the .two .is .that .the .results .section .is .entirely
.for .reviewing .the .results .and .the .discussion .part .is .entirely .for .discussing .the
.results .from .the .lab. .The .results .section .also .describes .the .experiment .when
, .its .completed .and .the .discussion .section .is .where .you .not .only .discuss .the
.results .but .also .summarize .and .interpret .your .main .findings .in .the .study/ .lab.
All .lab .reports .need .parenthetical .citations .and .a .Literature .Cited .section. .-
.CORRECT .ANSWER-True
Read .the .excerpt .below, .then .determine .in .which .section .of .a .lab .report .this
.passage .should .be .found.
"Chromatography .uses .the .different .properties .of .amino .acids .such .as .whether
.its .hydrophilic .or .polar, .hydrophobic .or .non-polar, .characteristics .of .their .R-
group, .the .size, .and .the .charge .of .the .amino .acid .(Lombard .et .al., .2018, .p. .18).
.By .putting .a .sample .of .the .different .amino .acids .being .tested .on .the .paper
.matrix .and .dip .the .paper .into .the .solvent .and .letting .it .stand .over .time, .we .will
.be .able .to .observe .and .record .the .distance .travelled .from .the .starting .point
.and .the .color .of .the .amino .acid. .The .rate .of .how .fast .the .sample .travels .up .the
.matrix .is .dependent .on .the .degree .of .adsorption .to .the .matric .and .solubility .in
.the .solvent .(Lombard .et. .al., .2018, .p. .18)." .- .CORRECT .ANSWER-Introduction
Read .the .excerpt .below, .then .determine .in .which .section .of .a .lab .report .this
.passage .should .be .found.
"The .Rf .values .of .the .six .amino .acids .(aspartic .acid, .histidine, .leucine, .lysine,
.proline, .and .valine) .were .0.6875, .0.2125, .0.65, .0.1875, .0.375, .and .0.575." .-
.CORRECT .ANSWER-Results
Read .the .excerpt .below, .then .determine .in .which .section .of .a .lab .report .this
.passage .should .be .found.
"When .testing .the .amino .acids, .the .Rf .values .of .glutamic .acid .(0.6875) .and
.proline .(0.375) .were .closest .to .the .Rf .values .of .unknown .A .(0.05 .and .0.39375).
.The .colors .of .the .two .amino .acids .and .unknown .X .were .also .the .same .colors
.being .green .and .orange. .The .Rf .values .of .Isoleucine .(0.1875) .and .Cysteine
.(0.575) .were .close .to .the .value .of .the .spots .in .unknown .B .(0.2375 .and .0.55).
.The .colors .were .also .the .same .between .these .amino .acids .all .being .blue. .From
.these .results .one .can .also .determine .that .isoleucine .is .the .least .polar .as .it
.traveled .the .least .and .glutamic .acid .is .the .most .polar .as .it .traveled .the .most." .-
.CORRECT .ANSWER-Discussion
Read .the .excerpt .below, .then .determine .in .which .section .of .a .lab .report .this
.passage .should .be .found.
"If .we .place .the .polar .paper .matrix .into .the .nonpolar .solvent .after .putting .the
.different .amino .acids .on .it, .then .nonpolar .amino .acids .will .migrate .the .greatest
.distance, .giving .the .highest .Rf .value." .- .CORRECT .ANSWER-Introduction
This .question .refers .to .your .results .for .the .Paper .Chromatography .experiment.
Identify .the .two .amino .acids .in .Unknown .X. .- .CORRECT .ANSWER-Lysine
Leucine
This .question .refers .to .your .results .for .the .Paper .Chromatography .experiment.
Identify .the .two .amino .acids .in .Unknown .Y. .- .CORRECT .ANSWER-Aspartic .acid
Valine
