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BIO |\ 1201 |\EXAM |\ 3 |\LSU |\questions |\with |\correct
|\answers
True |\or |\False: |\The |\purpose |\of |\mitosis |\is |\to |\insure |\that |\daughter |
cells |\have |\identical |\genetic |\information |\at |\the |\mother |\cell. |- |
CORRECT |\ANSWERS |\✔✔true How |\many |\centromeres |\are |\there |\per |\chromosome? |- |\CORRECT |
ANSWERS |\✔✔ 1 How |\many |\centrosomes |\per |\chromosome |\consist |\of |\ 2 |\sister |
chromatids? |- |\CORRECT |\ANSWERS |\✔✔ 1 When |\is |\DNA |\replicated? |- |\CORRECT |\ANSWERS |\✔✔S |\phase When |\are |\sister |\chromatids |\separated? |- |\CORRECT |\ANSWERS |
✔✔Anaphase |\I If |\the |\DNA |\content |\in |\G2 |\is |\X, |\what |\is |\the |\DNA |\content |\of |\each |
daughter |\cell |\at |\Telophase? |- |\CORRECT |\ANSWERS |\✔✔0.5X If |\the |\DNA |\content |\in |\G1 |\is |\X, |\what |\is |\the |\DNA |\content |\of |\each |\of |
the |\daughter |\cells |\at |\Telophase? |- |\CORRECT |\ANSWERS |\✔✔X
DNA |\replication |\checkpoint |\occurs |\where? |- |\CORRECT |\ANSWERS |
✔✔G We |\inherit |\our |\mitochondria |\from |\our... |- |\CORRECT |\ANSWERS |
✔✔our |\mother In |\mitosis |\when |\do |\homologous |\chromosome |\pairs |\separate? |- |
CORRECT |\ANSWERS |\✔✔in |\mitosis, |\homologous |\chromosomes |\do |
not |\separate In |\meiosis |\when |\do |\homologous |\chromosome |\pairs |\separate? |- |
CORRECT |\ANSWERS |\✔✔Anaphase |\I At |\G2, |\the |\amount |\of |\DNA |\is |\X. |\At |\Telophase |\II |\the |\amount |\of |\DNA |\in |\each |\of |\the |\daughter |\cells |\is... |- |\CORRECT |\ANSWERS |\✔✔0.25X At |\G1, |\the |\amount |\of |\DNA |\is |\X. |\At |\Telophase |\II |\the |\amount |\of |\DNA |\in |\each |\of |\the |\daughter |\cells |\is... |- |\CORRECT |\ANSWERS |\✔✔0.5X At |\G2 |\there |\are |\ 40 |\chromatids, |\what |\is |\the |\diploid |\chromosome |
number? |- |\CORRECT |\ANSWERS |\✔✔ 20
In |\genetics, |\what |\determines |\what? |- |\CORRECT |\ANSWERS |
✔✔genotype |\determines |\phenotype An |\individual |\with |\ 2 |\Barr |\Bodies |\has |\how |\many |\chromosomes? |- |
CORRECT |\ANSWERS |\✔✔3: |\ 2 |\are |\inactive, |\ 1 |\is |\active X |\chromosome |\inactivation |\happens |\how? |- |\CORRECT |\ANSWERS |
✔✔random |\and |\all |\but |\one Calico |\and |\tortoiseshell |\cats |\are |\examples |\of... |- |\CORRECT |\ANSWERS |\✔✔X |\chromosome |\inactivation Could |\an |\Rh+ |\man |\be |\the |\father |\of |\an |\Rh- |\child? |- |\CORRECT |
ANSWERS |\✔✔yes If |\both |\parents |\are |\carriers |\for |\sickle |\cell |\anemia, |\what |\is |\the |
percent |\of |\their |\children |\that |\will |\have |\the |\disease? |- |\CORRECT |
ANSWERS |\✔✔25% Why |\is |\the |\sickle |\allele |\maintained |\in |\populations, |\particularly |\in |
Africa |\and |\the |\Mediterranean |\Sea |\area? |- |\CORRECT |\ANSWERS |
✔✔Heterozygotes |\are |\immune |\to |\Malaria
Does |\testing |\newborns |\for |\diseases |\save |\money? |- |\CORRECT |
ANSWERS |\✔✔yes How |\much |\does |\it |\cost |\to |\test |\your |\child |\in |\the |\state |\of |\LA? |- |
CORRECT |\ANSWERS |\✔✔$ True |\or |\False: |\In |\an |\autosomal |\recessive |\trait, |\if |\two |\affected |
individuals |\have |\offspring |\then |\all |\of |\their |\children |\will |\have |\the |
trait. |- |\CORRECT |\ANSWERS |\✔✔true True |\or |\False: |\In |\mitosis |\it |\does |\not |\matter |\if |\you |\have |\unpaired |
chromosomes. |- |\CORRECT |\ANSWERS |\✔✔true How |\many |\barr |\bodies |\are |\there |\in |\the |\nucleus |\of |\a |\Turner's |
female |\cell? |- |\CORRECT |\ANSWERS |\✔✔ 0 Turner's |\female, |\XO, |\ 45 |\is |\n |\example |\of... |- |\CORRECT |\ANSWERS |
✔✔aneuploidy How |\many |\barr |\bodies |\in |\the |\preceding |\Klinefelters |\male |(XXXXY)? |- |\CORRECT |\ANSWERS |\✔✔ 3 A |\Klinefelters |\male, |\XXY |\47, |\is |\an |\example |\of... |- |\CORRECT |\ANSWERS |\✔✔aneuploidy
The |\3' |\end |\of |\the |\DNA |\strand |\has |\a... |- |\CORRECT |\ANSWERS |
✔✔hydroxyl |\group Human |\DNA |\does |\not |\incorporate |\AZT. |\Why? |- |\CORRECT |\ANSWERS |
✔✔human |\DNA |\polymerase |\has |\a |\proof-reading |\ability True |\or |\False: |\The |\double |\helix |\is |\antiparallel |\this |\refers |\to |\the |
directionality |\of |\the |\strands. |- |\CORRECT |\ANSWERS |\✔✔true The |\base |\pairing |\between |\strands |\is |\stabilized |\by... |- |\CORRECT |
ANSWERS |\✔✔hydrogen |\bonds "A" |\pairs |\with |\what |\base? |- |\CORRECT |\ANSWERS |\✔✔T The |\enzyme |\that |\inserts |\the |\RNA |\primer |\in |\DNA |\synthesis |\is... |- |
CORRECT |\ANSWERS |\✔✔primase DNA |\polymerase |\works |\5' |\to |\3'? |- |\CORRECT |\ANSWERS |\✔✔adds |\to |
the |\3' |\hydroxyl |\group True |\or |\False: |\Both |\the |\leading |\and |\lagging |\strands |\are |\synthesized |\5' |\to |\3'. |- |\CORRECT |\ANSWERS |\✔✔true
What |\enzyme |\stiches |\together |\Okazaki |\fragments? |- |\CORRECT |
ANSWERS |\✔✔ligase True |\or |\False: |\New |\monomers |\are |\added |\to |\the |\free |\5' |\phosphate |
in |\the |\growing |\DNA |\chain. |- |\CORRECT |\ANSWERS |\✔✔false True |\or |\False: |\The |\central |\dogma |\has |\no |\exceptions. |- |\CORRECT |
ANSWERS |\✔✔false The |\anti-codon |\base |\pairs |\to |\the |\mRNA |\are... |- |\CORRECT |\ANSWERS |
✔✔anti-parallel DNA |\template: |\5' |\ATGC |\3', |\RNA |\made: |- |\CORRECT |\ANSWERS |
✔✔3'UACG5' The |\central |\dogma |\does |\what? |- |\CORRECT |\ANSWERS |\✔✔DNA |\is |
transcribed |\into |\mRNA |\which |\is |\translated |\into |\proteins What |\transfers |\the |\genetic |\message |\from |\the |\nucleus |\to |\the |
cytoplasm? |- |\CORRECT |\ANSWERS |\✔✔messenger |\RNA In |\contrast |\to |\DNA, |\RNA |\has |\a |- |\CORRECT |\ANSWERS |\✔✔2' |\OH |
group
Which |\is |\the |\first |\tRNA |\to |\come |\onto |\the |\ribosomes |\for |\polypeptide |\synthesis? |- |\CORRECT |\ANSWERS |\✔✔MET-tRNA; |\this |\protein |\starts |
translation What |\is |\a |\mutation? |- |\CORRECT |\ANSWERS |\✔✔change |\in |\DNA If |\a |\somatic |\cell |\is |\just |\about |\to |\divide, |\it |\has |___ |\chromatids. |- |
CORRECT |\ANSWERS |\✔✔ 92 You |\would |\know |\a |\dividing |\cell |\was |\a |\plant |\cell |\rather |\than |\an |
animal |\cell |\if |\you |\saw |\that |_____. |- |\CORRECT |\ANSWERS |\✔✔it |\had |
formed |\a |\cell |\plate The |\centromere |\is |\a |\region |\in |\which |_____. |- |\CORRECT |\ANSWERS |
✔✔sister |\chromatids |\are |\attached |\to |\one |\another |\in |\prophase At |\which |\point |\in |\the |\cell |\cycle |\do |\centrosomes |\begin |\to |\move |
apart |\to |\two |\poles |\of |\the |\cell |\in |\a |\dividing |\human |\skin |\cell? |- |
CORRECT |\ANSWERS |\✔✔prophase Sister |\chromatids |_____. |- |\CORRECT |\ANSWERS |\✔✔have |\matching |
copies |\of |\the |\chromosome's |\DNA, |\are |\created |\when |\DNA |\is |\
replicated, |\are |\attached |\at |\the |\centromere |\prior |\to |\division, |\are |
separated |\during |\mitosis A |\biochemist |\measured |\the |\amount |\of |\DNA |\in |\cells |\growing |\in |\the |
laboratory |\and |\found |\that |\the |\quantity |\of |\DNA |\in |\the |\cells |\doubled |
_____. |- |\CORRECT |\ANSWERS |\✔✔between |\the |\G1 |\and |\G2 |\phases A |\cell |\entering |\the |\cell |\cycle |\with |\ 32 |\chromosomes |\will |\produce |\two |\daughter |\cells, |\each |\with |_____. |- |\CORRECT |\ANSWERS |\✔✔ 32 |
chromosomes If |\a |\cell |\contains |\ 60 |\chromatids |\at |\the |\start |\of |\mitosis, |\how |\many |
chromosomes |\will |\be |\found |\in |\each |\daughter |\cell |\at |\the |\completion |\of |\the |\cell |\cycle? |- |\CORRECT |\ANSWERS |\✔✔ 30 A |\cell |\biologist |\carefully |\measured |\the |\quantity |\of |\DNA |\in |
grasshopper |\cells |\growing |\in |\cell |\culture. |\Cells |\examined |\during |\the |\G2 |\phase |\of |\the |\cell |\cycle |\contained |\ 200 |\units |\of |\DNA. |\What |\would |\be |\the |\amount |\of |\DNA |\at |\G1 |\of |\the |\cell |\cycle |\in |\one |\of |\the |
grasshopper |\daughter |\cells? |- |\CORRECT |\ANSWERS |\✔✔ 100 |\units During |\anaphase |\of |\mitosis |_____. |- |\CORRECT |\ANSWERS |\✔✔the |
centromeres |\divide, |\a |\spindle |\made |\of |\microtubules |\is |\present, |\the |
centrioles |\are |\at |\opposite |\poles, |\identical |\chromatids |\move |\to |
opposite |\poles
In |\a |\diploid |\cell |\containing |\ 10 |\chromosomes, |\meiosis |\results |\in |\the |
formation |\of |\daughter |\cells |\containing |_____ |\chromosomes. |- |
CORRECT |\ANSWERS |\✔✔ 5 Which |\one |\of |\the |\following |\occurs |\in |\meiosis, |\but |\not |\mitosis? |- |
CORRECT |\ANSWERS |\✔✔homologous |\chromosomes |\separate Crossing |\over |\is |_____. |- |\CORRECT |\ANSWERS |\✔✔the |\exchange |\of |
homologous |\portions |\of |\non-sister |\chromatids Which |\of |\the |\following |\is |(are) |\true |\for |\alleles? |- |\CORRECT |\ANSWERS |\✔✔They |\can |\be |\identical |\or |\different |\for |\any |\given |\gene |\in |\a |
somatic |\cell. |\They |\can |\be |\dominant |\or |\recessive. |\They |\can |\represent |\alternative |\forms |\of |\a |\gene. All |\the |\offspring |\of |\a |\cross |\between |\a |\black-eyed |\MendAlien |\and |\an |\orange-eyed |\MendAlien |\have |\black |\eyes. |\This |\means |\that |\the |\allele |\for |\black |\eyes |\is |________ |\the |\allele |\for |\orange |\eyes. |- |\CORRECT |
ANSWERS |\✔✔dominant |\to A |\plant |\with |\purple |\flowers |\is |\allowed |\to |\self-pollinate. |\Generation |
after |\generation, |\it |\produces |\purple |\flowers. |\This |\is |\an |\example |\of |- |\CORRECT |\ANSWERS |\✔✔true-breeding
Pea |\plants |\were |\particularly |\well |\suited |\for |\use |\in |\Mendel's |
breeding |\experiments |\for |\all |\of |\the |\following |\reasons |\except |\that |- |
CORRECT |\ANSWERS |\✔✔peas |\have |\an |\unusually |\long |\generation |
time A |\cross |\between |\homozygous |\purple-flowered |\and |\homozygous |
white-flowered |\pea |\plants |\results |\in |\offspring |\with |\purple |\flowers. |
This |\demonstrates |- |\CORRECT |\ANSWERS |\✔✔dominance In |\cattle, |\roan |\coat |\color |(mixed |\red |\and |\white |\hairs) |\occurs |\in |\the |
heterozygous |(Rr) |\offspring |\of |\red |(RR) |\and |\white |(rr) |\homozygotes. |
Which |\of |\the |\following |\crosses |\would |\produce |\offspring |\in |\the |\ratio |\of |\ 1 |\red:2 |\roan:1 |\white? |- |\CORRECT |\ANSWERS |\✔✔roan |\x |\roan What |\is |\the |\expected |\phenotypic |\ratio |\of |\a |\cross |\between |\two |
orange-eyed |\MendAliens? |- |\CORRECT |\ANSWERS |\✔✔ 0 |\black-eyed: |\ 1 |
orange-eyed All |\the |\offspring |\of |\a |\cross |\between |\a |\red-flowered |\plant |\and |\a |
white-flowered |\plant |\have |\pink |\flowers. |\This |\means |\that |\the |\allele |
for |\red |\flowers |\is |________ |\to |\the |\allele |\for |\white |\flowers. |- |\CORRECT |\ANSWERS |\✔✔incomplete |\dominant A |\genetic |\defect |\in |\humans |\results |\in |\the |\absence |\of |\sweat |\glands |
in |\the |\skin. |\Some |\men |\have |\this |\defect |\all |\over |\their |\bodies, |\but |\in |
women |\it |\is |\usually |\expressed |\in |\a |\peculiar |\way: |\A |\woman |\with |\this
results |\from |_____. |- |\CORRECT |\ANSWERS |\✔✔aneuploidy |... |
nondisjunction |\of |\chromosome |\ 21 |\during |\meiosis |\I What |\enzyme |\joins |\Okazaki |\fragments? |- |\CORRECT |\ANSWERS |
✔✔DNA |\ligase Which |\one |\of |\the |\following |\is |\not |\true |\about |\double-stranded |\DNA? |- |\CORRECT |\ANSWERS |\✔✔Adenine |\and |\uracil |\are |\present |\in |\equal |
amounts. DNA |\polymerase |\adds |\nucleotides |\to |\the |_____ |\of |\the |\leading |
strands, |\and |\to |\the |_____ |\of |\the |\lagging |\strands |(Okazaki |\fragments) |. |- |\CORRECT |\ANSWERS |\✔✔3' |\end |\to |\3' |\end One |\strand |\of |\a |\DNA |\molecule |\has |\the |\base |\sequence |\5'-ATAGGT-3'. |\The |\complementary |\base |\sequence |\on |\the |\other |\strand |\of |\DNA |\will |\be |\3'-_______-5'. |- |\CORRECT |\ANSWERS |\✔✔TATCCA Telomerase |_____. |- |\CORRECT |\ANSWERS |\✔✔is |\an |\enzyme |\made |\up |
of |\protein |\and |\RNA |\that |\lengthens |\telomeres Telomeres |_____. |- |\CORRECT |\ANSWERS |\✔✔get |\shorter |\with |
continued |\cell |\division
During |\Griffith's |\experiments |\with |\Streptococcus |\pneumoniae |\in |
mice, |\material |\from |_____ |\bacteria |\transformed |_____ |\bacteria. |- |
CORRECT |\ANSWERS |\✔✔heat-killed |\virulent |... |\living |\nonvirulent Avery |\and |\his |\colleagues' |\ 1944 |\experiment |\showed |\that |\DNA |_____. |- |\CORRECT |\ANSWERS |\✔✔was |\the |\substance |\that |\transformed |\the |
bacteria |\in |\Griffith's |\experiment The |\role |\of |\DNA |\polymerases |\in |\DNA |\replication |\is |\to |_____. |- |
CORRECT |\ANSWERS |\✔✔attach |\free |\nucleotides |\to |\the |\new |\strand Chargaff |\found |\that |\for |\DNA |_____. |- |\CORRECT |\ANSWERS |\✔✔the |
ratio |\of |\A |\to |\T |\is |\close |\to |\1:1 |\and |\the |\ratio |\of |\G |\to |\C |\is |\close |\to |\1: A |\point |\mutation |\in |\which |\a |\single |\base |\pair |\is |\inserted |\or |\deleted |
from |\DNA |\is |\called |\a(n) |_____. |- |\CORRECT |\ANSWERS |\✔✔frame-shift |
mutation Which |\of |\the |\following |\mutations |\would |\be |\most |\likely |\to |\have |\a |
harmful |\effect |\on |\an |\organism?
- |\a |\base-pair |\substitution |\
- |\a |\single |\nucleotide |\deletion |\in |\the |\middle |\of |\an |\intron |\
- |\a |\deletion |\of |\three |\bases |\near |\the |\middle |\of |\a |\gene |\
In |\transcription, |_____. |- |\CORRECT |\ANSWERS |\✔✔the |\RNA |\nucleotides |\used |\are |\produced |\by |\the |\cell, |\the |\promoter |\region |\acts |\as |\an |
initial |\binding |\site |\for |\RNA |\polymerase, |\only |\one |\of |\the |\DNA |
strands |\is |\used |\as |\the |\template Which |\one |\of |\the |\following |\catalyzes |\the |\linkage |\between |
ribonucleotides |\to |\form |\RNA |\during |\gene |\expression? |- |\CORRECT |
ANSWERS |\✔✔RNA |\polymerase What |\is |\the |\proper |\order |\of |\the |\following |\events |\in |\the |\expression |
of |\a |\eukaryotic |\gene? |\
- |\translation
- |\RNA |\processing
- |\transcription
- |\modification |\of |\protein |- |\CORRECT |\ANSWERS |\✔✔3,2,1, Which |\of |\the |\following |\is |\true |\of |\translation |\in |\both |\prokaryotes |
and |\eukaryotes? |- |\CORRECT |\ANSWERS |\✔✔The |\codon |\UUU |\codes |\for |\phenylalanine What |\is |\not |\true |\about |\a |\codon? |- |\CORRECT |\ANSWERS |\✔✔It |
extends |\from |\one |\end |\of |\a |\tRNA |\molecule.
