Biology 1107 Exam 3 (2025) Actual
Exam Questions and Answers A+
Graded
DNA .- .CORRECT .ANSWER-runs .3' .to .5' .and .5' .to .3'
Chromatin .- .CORRECT .ANSWER--DNA .and .protein .complex .found .in .eukaryotic
.cells
-prokaryotes .do .not .contain .chromatin
-DNA .is .packaged .into .nucleosomes .that .have .histone .protein .cores
Which .of .the .following .molecules .are .found .in .the .chromatin .of .eukaryotic
.cells? .- .CORRECT .ANSWER-protein, .nucleic .acids, .and .monosaccharides
Chromosome .- .CORRECT .ANSWER--a .single .piece .of .chromatin
-a .replicated .set .of .chromatin .pieces .that .remain .attached .at .the .centromere
Does .the .number .of .chromosomes .matter? .- .CORRECT .ANSWER-yes, .such .as
.replication
Chromatids .- .CORRECT .ANSWER-two .identical .chromosomes .that .split .and
.contain .the .same .genetic .material
Human .somatic .cells .usually .have .23 .chromosomes .in .their .nuclei. .How .many
.sister .chromatids .will .such .a .cell .have .after .DNA .replication .but .before .cell
.division? .- .CORRECT .ANSWER-92
Cell .Cycle .- .CORRECT .ANSWER--the .event .sequence .during .which .a .eukaryotic
.cell .replicates .DNA .and .divides
-lengths .of .gap .phases .vary .by .the .type .of .cell
-interphase: .G1, .S, .and .G2
Mitosis .- .CORRECT .ANSWER--division .of .the .nucleus .that .results .in .2 .identical
.daughter .nuclei
-interphases .(including .DNA .replication) .and .cytokinesis .are .not .apart .of
.mitosis
Cytokinesis .- .CORRECT .ANSWER--division .of .the .cytoplasm .that .results .in .2
.daughter .cells
-not .apart .of .mitosis
, If .a .fruit .fly .zygote .goes .through .mitosis .four .times .but .never .undergoes
.cytokinesis, .what .do .you .predict .will .be .the .outcome? .- .CORRECT .ANSWER-
one .cell .that .has .16 .identical .nuclei
Can .a .cell .have .more .than .one .nucleus? .- .CORRECT .ANSWER-yes
Phases .of .mitosis .- .CORRECT .ANSWER-prophase, .prometaphase, .metaphase,
.anaphase, .telophase
Prophase .- .CORRECT .ANSWER--chromatin .is .going .from .decondensed .to
.condensed .structure
-spindle .is .being .constructed
Prometaphase .- .CORRECT .ANSWER--the .nucleus .is .decomposing
-allows .spindle .to .attach .to .centeromer .of .chromosome
Metaphase .- .CORRECT .ANSWER-Chromosomes .move .to .middle .of .the .cell .and
.line .up
Anaphase .- .CORRECT .ANSWER--chromatids .are .pulled .to .opposite .ends .by .the
.spindles
-2 .sets .of .chromatids
Telephase .- .CORRECT .ANSWER--mew .nuclear .envelopes .are .developing
.around .2 .sets .of .chromatids
-spindle .decomposes
Cytokensis .during .mitosis .- .CORRECT .ANSWER--starts .during .the .end .of
.anaphase .and .ends .after .mitosis .is .complete
Cytokensis .- .CORRECT .ANSWER--animal .cell: .develop .a .cleavage .furrow .to
.simply .pinch .in .half
-plant .cell: .need .a .new .cell .wall .to .develop .between .2 .nuclei
How .many .chromosomes .does .a .cell .with .78 .chromosomes .in .the .G1 .phase .of
.the .cell .cycle .have .during .prophase .of .mitosis? .- .CORRECT .ANSWER-78
Metaphase .and .cytokenis .functions .- .CORRECT .ANSWER--growth
-repair
-reproduction
Cell .cycle .- .CORRECT .ANSWER-several .checkpoints .to .regulate .the .cell .cycle
.by .passing .cell .division .if .certain .conditions .are .satisfied
G1 .checkpoint .- .CORRECT .ANSWER--cell .size .needs .to .be .large .enough
-undamaged .DNA
Exam Questions and Answers A+
Graded
DNA .- .CORRECT .ANSWER-runs .3' .to .5' .and .5' .to .3'
Chromatin .- .CORRECT .ANSWER--DNA .and .protein .complex .found .in .eukaryotic
.cells
-prokaryotes .do .not .contain .chromatin
-DNA .is .packaged .into .nucleosomes .that .have .histone .protein .cores
Which .of .the .following .molecules .are .found .in .the .chromatin .of .eukaryotic
.cells? .- .CORRECT .ANSWER-protein, .nucleic .acids, .and .monosaccharides
Chromosome .- .CORRECT .ANSWER--a .single .piece .of .chromatin
-a .replicated .set .of .chromatin .pieces .that .remain .attached .at .the .centromere
Does .the .number .of .chromosomes .matter? .- .CORRECT .ANSWER-yes, .such .as
.replication
Chromatids .- .CORRECT .ANSWER-two .identical .chromosomes .that .split .and
.contain .the .same .genetic .material
Human .somatic .cells .usually .have .23 .chromosomes .in .their .nuclei. .How .many
.sister .chromatids .will .such .a .cell .have .after .DNA .replication .but .before .cell
.division? .- .CORRECT .ANSWER-92
Cell .Cycle .- .CORRECT .ANSWER--the .event .sequence .during .which .a .eukaryotic
.cell .replicates .DNA .and .divides
-lengths .of .gap .phases .vary .by .the .type .of .cell
-interphase: .G1, .S, .and .G2
Mitosis .- .CORRECT .ANSWER--division .of .the .nucleus .that .results .in .2 .identical
.daughter .nuclei
-interphases .(including .DNA .replication) .and .cytokinesis .are .not .apart .of
.mitosis
Cytokinesis .- .CORRECT .ANSWER--division .of .the .cytoplasm .that .results .in .2
.daughter .cells
-not .apart .of .mitosis
, If .a .fruit .fly .zygote .goes .through .mitosis .four .times .but .never .undergoes
.cytokinesis, .what .do .you .predict .will .be .the .outcome? .- .CORRECT .ANSWER-
one .cell .that .has .16 .identical .nuclei
Can .a .cell .have .more .than .one .nucleus? .- .CORRECT .ANSWER-yes
Phases .of .mitosis .- .CORRECT .ANSWER-prophase, .prometaphase, .metaphase,
.anaphase, .telophase
Prophase .- .CORRECT .ANSWER--chromatin .is .going .from .decondensed .to
.condensed .structure
-spindle .is .being .constructed
Prometaphase .- .CORRECT .ANSWER--the .nucleus .is .decomposing
-allows .spindle .to .attach .to .centeromer .of .chromosome
Metaphase .- .CORRECT .ANSWER-Chromosomes .move .to .middle .of .the .cell .and
.line .up
Anaphase .- .CORRECT .ANSWER--chromatids .are .pulled .to .opposite .ends .by .the
.spindles
-2 .sets .of .chromatids
Telephase .- .CORRECT .ANSWER--mew .nuclear .envelopes .are .developing
.around .2 .sets .of .chromatids
-spindle .decomposes
Cytokensis .during .mitosis .- .CORRECT .ANSWER--starts .during .the .end .of
.anaphase .and .ends .after .mitosis .is .complete
Cytokensis .- .CORRECT .ANSWER--animal .cell: .develop .a .cleavage .furrow .to
.simply .pinch .in .half
-plant .cell: .need .a .new .cell .wall .to .develop .between .2 .nuclei
How .many .chromosomes .does .a .cell .with .78 .chromosomes .in .the .G1 .phase .of
.the .cell .cycle .have .during .prophase .of .mitosis? .- .CORRECT .ANSWER-78
Metaphase .and .cytokenis .functions .- .CORRECT .ANSWER--growth
-repair
-reproduction
Cell .cycle .- .CORRECT .ANSWER-several .checkpoints .to .regulate .the .cell .cycle
.by .passing .cell .division .if .certain .conditions .are .satisfied
G1 .checkpoint .- .CORRECT .ANSWER--cell .size .needs .to .be .large .enough
-undamaged .DNA
