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Bio1406 > Unit 8 > Flashcards

Unit 8 Flashcards

1
Q

What are codons

A

3 nucleotides -(amino acid sequence)

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2
Q

Introns

A

A segment of dna or rna that do not code for protiens, interupts genes

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3
Q

Extrons

A

Section of dna or rna that Code for protiens

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4
Q

Dna polymarase

A

Requires a primer, process of dna replication

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5
Q

Rna polymarase

A

Binds to a promoter, transcribe the genetic information store in dna. To rna

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6
Q

Transcription

A

The copy of dna
Copying a segment of dna into rna

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7
Q

Translation

A

Rna uses mRna to make aminoc acid sequences

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8
Q

What are the three processes in posttranscriptional modification that must be completed before transcripts can be translated in eukaryotes?

A

Splicing, capping, addition of a poly A tail

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9
Q

What are promoters made of

A

Nucleic acids

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10
Q

Giffith

A

Use two straints r strains and smooth straint, and discovered that heat kill bacteria
Tranmission Principal

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11
Q

Avery and colleagues

A

Fallow the griffth expirement use dna and protien
Discover that Dna was rhe principle

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12
Q

Hershey and chase

A

Use bacteriphages
Dna was phospurus
Protien -sulfur
Dna injected itself in the bacteriaphages

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13
Q

Telomarase

A

The more telemorase -lives longer
Adds guanine
(Age)

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14
Q

Proofreading

A

Corrects mistakes of dna replication that the dna polymarase makes

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15
Q

Mistmatching

A

scans the replicated dna for mispaired base pairs and pair them with correct pair
A-T G-C

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16
Q

Excision

A

Takes out damage basepair and replaces it with a functional one

17
Q

Central Dogma

A

Flow of genetic info from dna to dnd, rna to protien

18
Q

Which base pair is the stronges
A-T
G-C

A

G-C because it has 3 hydrogen bonds

19
Q

What is added to the 3’ end of an mRna transcriptuon during Rna processing

A

A Poly A tail

20
Q

Transcrip the Dna sequence 5’-GCTATA

A

3”-CGAUAU-5’

21
Q

What protien help Rna polymarase bind to the promoter for transcription

A

Transcription factors

22
Q

What enzyme reloads a tRNA molecule with an amino acid?

A

Aminoacyl-tRNA synthetase

23
Q

What does primase add

A

Short strands of RNA to the lagging strand

24
Q

Where do stop codons enter

A

They Enter the A site

25
Q

What molecule transfers info from the nucleus to the cytoplasm in the eukaryotic cell

A

MRNA

26
Q

Silent mutation

A

Same amino sequence just diff codon

Bio1406 (1 decks)

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