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Flashcards in Exam 2 Prep Deck (27):
1

Semi-Conservative Replication

As DNA replicates, it's using the original double helix and unzips and creating a old strand and a new strand using the parental strands as a template.

2

What is the Product of Transcription?

rRNA

3

Where is the Transcription occurring?

Nucleus

4

Where does the Translation occur?

Cytoplasm

5

During transcription of a particular gene, the RNA polymerase will transcribe?

Only one DNA strand in the 3' to 5' direction

6

Group 2 introns, nuclear pre mRNA share this mechanistic feature of splicing?

Initiation of the phosphate ester bond, exchanged by 2'OH of branch point Adenosine

7

DNA Methylation of gene

inhibits transcription by making DNA inaccessible

8

Which enzyme decodes nucleotides to amino?

Amincoacyl tRNA synthase

9

Which of the following best describes the 'cap' mod to mRNA?

Modified Guanine to 5' end.

10

Where does the ribosome production occur?

in the area of nucleolus

11

Consequences of semi-conservative replication

Inheritance of genetics

12

RNA Polymerase differ from DNA Polymerase in which feature?

Only DNA polymerase require a primer nucleotide

13

Function of the 5' cap

prevents degradation from the 5' end
transports out of the nucleus
initiation of translation

14

Heterochromatin

Modified or suppressed genes

15

euchromatin

involved in transcription, participates in active transcription from DNA to mRNA

16

Where is mRNA is located...

in the Nucleus

17

Transcriptase

enzyme that catalyze the formation of RNA from DNA (RNA Polymer)

18

Missense mutation

codes for a different amino acid

19

nonsense mutation

stops the code early by a mutation of a termination code

20

silent mutation

has no effect on the code

21

Primase

synthesis of RNA primers

22

DNA Helicase

Breaks the hydrogen bonds between strands

23

Topoisomerase

releases the winding strain

24

RPA

binds to the single strand to prevent the return of the Hydrogen bonds

25

PCNA

clamps the polymerase to the DNA strand

26

DNA ligase

Seals the dna strands

27

wobble

pairing of the tRNA where the first two anti codons are done, the third is less important