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BIO 1021 Exam 1 || All Questions Answered Correctly.
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BIO 1021 Exam 1 || All Questions Answered Correctly.
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BIO 1021 Exam 1 || All Questions Answered Correctly.The .fundamental .unit .of .life .is .the .- .(correct .answer) .-e. .cell.
Heterotrophs .obtain .their .energy .from .- .(correct .answer) .-c. .other .organisms.
The .initial .accumulation .of .oxygen .in .the .atmosphere .was .the .result .of .photosynthesis .from .an .orga
nism .most .like .modern .- .(correct .answer) .-a. .cyanobacteria .(blue .green .algae).
Ozone .is .important .to .life .on .Earth .because .it .- .(correct .answer) .-
c. .blocks .much .ultraviolet .radiation.
Eukarya .include .- .(correct .answer) .-e. .All .of .the .above
The .part .of .the .atom .that .determines .how .the .atom .behaves .chemically .is .the .- .(correct .answer) .-
b. .electron.
Because .atoms .can .have .the .same .number .of .protons .but .a .different .number .of .neutrons, .elements
.have .- .(correct .answer) .-a. .isotopes.
All .except ._______ .follow .the .octet .rule. .- .(correct .answer) .-d. .hydrogen
What .is .the .difference .between .covalent .and .ionic .bonds? .- .(correct .answer) .-
e. .Covalent .bonds .are .the .sharing .of .electrons .between .atoms, .whereas .ionic .bonds .are .the .transfer
.of .electrons .from .one .atom .to .another.
Sweating .is .a .useful .cooling .device .for .humans .because .water .- .(correct .answer) .-
a. .takes .up .a .great .deal .of .heat .in .changing .from .its .liquid .state .to .its .gaseous .state.
What .is .the .difference .between .an .acid .and .a .base? .- .(correct .answer) .-
e. .An .acid .releases .H+ .ions .in .solution, .whereas .a .base .accepts .H+ .ions.
Cholesterol .is .composed .primarily .of .carbon .and .hydrogen .atoms. .Which .property .would .you .expect
.cholesterol .to .have? .- .(correct .answer) .-a. .It .is .insoluble .in .water.
The .functional .group .written .as .—COOH .is .called .the ._______ .group. .- .(correct .answer) .-e. .carboxyl
Surface .tension .and .capillary .action .occur .in .water .because .it .- .(correct .answer) .-
c. .has .hydrogen .bonds.
, In .condensation .
(dehydration) .reactions, .the .atoms .that .make .up .a .water .molecule .are .derived .from .- .
(correct .answer) .-c. .both .of .the .reactants.
You .have .isolated .an .unidentified .liquid .from .a .sample .of .peanuts. .You .add .the .liquid .to .a .beaker .o
f .water .and .shake .vigorously. .After .a .few .minutes, .the .water .and .the .other .liquid .separate .into .two
.layers. .To .which .class .of .large .biological .molecules .does .the .unknown .liquid .most .likely .belong? .- .
(correct .answer) .-b. .Lipids
You .look .at .the .label .on .a .container .of .shortening .and .see ."hydrogenated .vegetable .oil." .This .mean
s .that .during .processing .the .number .of .carbon-
carbon .double .bonds .in .the .oil .was .decreased. .What .is .the .result .of .decreasing .the .number .of .doub
le .bonds? .- .(correct .answer) .-b. .The .oil .is .now .a .solid .at .room .temperature.
The .portion .of .a .phospholipid .that .contains .the .phosphorous .group .has .one .or .more .electric .charge
s. .That .makes .this .region .of .the .molecule .- .(correct .answer) .-b. .hydrophilic.
In .a .biological .membrane, .the .phospholipids .are .arranged .with .the .fatty .acid .chains .facing .the .interi
or .of .the .membrane. .As .a .result, .the .interior .of .the .membrane .is .- .(correct .answer) .-
a. .hydrophobic.
Glucose .and .fructose .both .have .the .formula .C6H12O6, .but .the .atoms .in .these .two .compounds .are .
arranged .differently. .Glucose .and .fructose .are .known .as .- .(correct .answer) .-a. .isomers.
A .nucleotide .contains .a .pentose .sugar, .a .phosphate .group, .and .a(n) .- .(correct .answer) .-c. .nitrogen-
containing .base.
In .animals, .carbohydrate .is .stored .in .the .form .of .- .(correct .answer) .-c. .glycogen.
The .primary .structure .of .a .protein .is .determined .by .its .- .(correct .answer) .-
c. .sequence .of .amino .acids.
When .a .protein .loses .its .three-dimensional .structure .and .becomes .nonfunctional, .it .is .- .
(correct .answer) .-c. .denatured.
The ._______ .structure .of .a .protein .concerns .the .way .separate .polypeptides .are .assembled .together.
.- .(correct .answer) .-d. .quaternary
Miller-Urey .showed .that .in .any .environment .with .conditions .similar .to .those .of .Earth, .- .
(correct .answer) .-a. .inorganic .molecules .would .react .to .form .organic .molecules.
Lipids .such .as .cholesterol .are .synthesized .by .- .(correct .answer) .-c. .the .SER .
(smooth .endoplasmic .reticulum).
What .is .the .major .distinction .between .prokaryotic .and .eukaryotic .cells? .- .(correct .answer) .-
a. .A .prokaryotic .cell .does .not .have .a .nucleus, .whereas .a .eukaryotic .cell .does.
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