Biology 1107 Chapters 1-5 (2025) Actual Exam Questions and Answers A+ Graded.

Biology 1107 Chapters 1-5 (2025)
Actual Exam Questions and Answers
A+ Graded




You .work .for .a .company .that .manufactures .food .products. .A .new ."wonder
.food" .contains .only .carbon, .oxygen, .and .hydrogen. .At .this .point, .your
.researchers .can .say .with .certainty .that .the .food .- .CORRECT .ANSWER-does .not
.include .proteins .or .nucleic .acids


A .meter .contains ._____ .centimeters .- .CORRECT .ANSWER-100

a .liter .contains ._____ .millimeters .- .CORRECT .ANSWER-1000

a .kilogram .contains ._____ .grams .- .CORRECT .ANSWER-1000

In .the ."smart .mouse" .laboratory .exercise, .mice .given .the ."smart" .gene .were
.tested .for .intelligence .by .their .ability .to .find .cheese .through .a .maize. .What .is
.the .independent .variable? .- .CORRECT .ANSWER-The .presence .or .absence .of
.the .gene


A(n) ._____ .forms .when .two .atoms .share .electrons .- .CORRECT .ANSWER-
covalent .bonds

A .hydrogen .atom .has .one .electron. .How .many .covalent .bonds .can .hydrogen
.form? .- .CORRECT .ANSWER-one .covalent .bond


What .is .the .fundamental .difference .between .covalent .and .ionic .bonding? .-
.CORRECT .ANSWER-In .a .covalent .bond, .the .partners .share .a .pair .of .electrons;
.in .an .ionic .bond, .one .partner .accepts .electrons .from .the .other


which .of .the .following .statements .regarding .the .oxygen .atom .of .a .water
.molecule .is .true? .- .CORRECT .ANSWER-oxygen .is .more .electronegative .than
.the .hydrogen .atoms


in .a .water .molecule, .hydrogen .and .oxygen .are .held .together .by .a(n) ._____
.bond. .- .CORRECT .ANSWER-polar .covalent

, a .person .shakes .up .vinegar .and .oil .dressing .before .pouring .it .on .salads. .What
.is .the .chemical .reason .for .doing .this? .- .CORRECT .ANSWER-vinegar .contains
.charged .water .molecules, .while .oil .is .neutral .and .repels .water


a .water .molecule .(H-O-H) .is .held .together .by .- .CORRECT .ANSWER-two .polar
.covalent .bonds


The .hydrogen .atoms .of .a .water .molecule .are .bonded .to .the .oxygen .atom .by
._____ .bonds, .whereas .neighboring .water .molecules .are .held .together ._____
.bonds. .- .CORRECT .ANSWER-polar .covalent....... .hydrogen


_____are .weak .bonds .that .are .not .strong .enough .to .hold .atoms .together .to
.form .molecules .but .are .strong .enough .to .form .bonds .within .and .around .large
.molecules .- .CORRECT .ANSWER-hydrogen .bonds


water .molecules .stick .to .other .water .molecules .because .- .CORRECT .ANSWER-
hydrogen .bonds .form .between .the .hydrogen .atoms .of .one .water .molecule .and
.the .oxygen .atoms .of .other .water .molecules


the .tendency .of .water .molecules .to .sick .together .is .referred .to .as .- .CORRECT
.ANSWER-cohesion


which .of .the .following .is .dependent .on .the .ability .of .water .molecules .to .form
.hydrogen .bonds .with .other .molecules .besides .water? .- .CORRECT .ANSWER-the
.universality .of .water .as .a .solvent


water's .surface .tension .and .heat .storage .capacity .is .accounted .for .by .its .-
.CORRECT .ANSWER-hydrogen .bonds


as .ice .melts, .- .CORRECT .ANSWER-hydrogen .bonds .are .broken

the .temperature .of .evaporation .is .much .higher .for .water .than .for .alcohol.
.without .knowing .more .about .the .chemistry .of .alcohol, .which .of .the .following .is
.the .most .logical .chemical .explanation .for .this .phenomenon? .- .CORRECT
.ANSWER-fewer .hydrogen .bonds .form .between .alcohol .molecules. .as .a .result,
.less .heat .is .needed .for .alcohol .molecules .to .break .away .from .solution .and
.enter .the .air


which .of .the .following .statements .about .water .is .false? .- .CORRECT .ANSWER-
the .hydrogen .bonds .in .ice .are .less .stable .than .the .hydrogen .bonds .in .liquid
.water


you've .made .a .hot .drink .by .dissolving .a .teaspoon .of .instant .coffee .and .a
.teaspoon .of .sugar .in .a .cup .of .hot .water. .which .of .the .following .statements .is
.true? .- .CORRECT .ANSWER-you've .just .prepared .an .aqueous .solution


a .pharmaceutical .company .hires .a .chemist .to .analyze .the .purity .of .the .water
.being .used .in .its .drug .preparations. .If .the .water .is .pure, .the .chemist .would
.expect .to .find .- .CORRECT .ANSWER-H2O .molecules, .H+ .ions, .and .OH- .ions