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DC Biology > BIO 4 > Flashcards

BIO 4 Flashcards

1
Q

How many nucleotides of RNA code for 20 amino acids?

A

4

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2
Q

where does transcription take place

A

nucleus

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3
Q

what type of rna is a subsequent of the ribosome?

A

rRna

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4
Q

the growth of dna takes place in which direction

A

5’-3’

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5
Q

the main way to regulate gene expression is by affecting

A

transcription

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6
Q

coding for more than one type of polypeptide from a single gene is the result of

A

alternative rna splicing

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7
Q

in gel electrophoresis, dna segments seperate according to

A

size

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8
Q

gene that causes cancer

A

oncogene

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9
Q

PCR is a technique used to

A

amplify dna

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10
Q

what is used to link dna segments together

A

RNA polymerase

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11
Q

what bonds are responsible for creating double helix

A

hydrogen

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12
Q

what are codons

A

segments of 3 nucelotides

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13
Q

cloning that results in live birth

A

reproductive cloning

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14
Q

nucleotide bases that are single-ringed are called

A

pyrimidines

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15
Q

the start codon is

A

AUG

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16
Q

retention of a parental dna strand

A

semi conserved

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17
Q

rna sugar

A

ribose

18
Q

connection of based in a single strand

A

sugar-phosphate back bone

19
Q

where dna strands seperate

A

origin of replication

20
Q

coding dna regions

A

exons

21
Q

complimentary base to mRNA triplet

A

anitcodon

22
Q

stops transcription

A

repressor

23
Q

nucleosomes are composed of

A

histones and DNA

24
Q

helps rna polymerase attach

A

transcription factors

25
Q

what is not a way to regulate translation

A

activate nucleotides

26
Q

of genes does not equal complexity

A

c-value paradox

27
Q

not a step in transcription

A

processing

28
Q

when dna forms and source is sliced into another source

A

a-recominant

29
Q

what causes the lac operon to be turned on

A

repressor

30
Q

how many genes are coded for in the lac operon

A

3

31
Q

what allows the lac operon to be turned on

A

lactose

32
Q

where does the repressor attach to turn the lac operon off

A

promoter

33
Q

a cell that differentiates into any cell type

A

embryonic stem cell

34
Q

AUG codes for

A

methionine

35
Q

what rna is attached to a.a.

A

transfer

36
Q

large dna segments travel —— compared to smaller in electrophoresis

A

slower

37
Q

forensic scientist must use when doing dna analysis

A

same endonucleases

38
Q

what general term descirbes the percent of DNA that makes humans unique

A

extremely small percent

39
Q

what causes dna to separate at different rates

A

meshwork gel

40
Q

what are codons

A

sequence of 3 nucleotides code for a.a.

DC Biology (4 decks)

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