Question

QUESTION 31

1. Semiconservative replication of DNA means that:

	a.	one daughter duplex will be entirely new and the other will have both original parental strands
	b.	each strand of the daughter duplexes will have parts of the parental strand and parts of the new strand
	c.	each daughter duplex will have one of the original parental strands and one new strand
	d.	both daughter duplexes will be entirely new and the parental duplex will be degraded

QUESTION 32

1. How is synthesis terminated in DNA Replication?

	a.	DNA Polymerase runs out of template
	b.	DNA Polymerase adds a Poly-A Tail to the new daughter strand
	c.	DNA Polymerase reads a stop codon
	d.	DNA Polymerase reaches an end site
	e.	DNA Polymerase synthesizes a terminator sequence

QUESTION 33

1. Where in the cell does Transcription occur?

	a.	Mitochondria
	b.	Cytoplasm
	c.	Nucleus
	d.	Golgi Apparatus
	e.	Peroxisome

QUESTION 34

1. What DNA sequence dictates which of the two DNA strands (of a DNA molecule) will function as the template for transcription?

	a.	starter sequence
	b.	start codon
	c.	initiation site
	d.	primer
	e.	promoter

QUESTION 35

1. RNA Polymerase requires a primer to synthesize RNA.

True

False

QUESTION 36

1. Which of the following enzymes is responsible for ensuring that genetic material at the end of the chromosome is not lost during DNA replication?

	a.	DNA Polymerase
	b.	Helicase
	c.	Primase
	d.	Telomerase
	e.	DNA Ligase

QUESTION 37

1. What attracts or directs the synthesis enzyme to the template in Transcription?

	a.	Promoter
	b.	5'-cap
	c.	Poly-A Tail
	d.	Primer
	e.	Start Codon

QUESTION 38

1. mRNA transcripts must be processed before transport out into the nucleus. Which of the following lists all of the modifications made to a pre-mRNA transcript?

	a.	addition of a 5'-cap and Poly-A tail
	b.	addition of a 5'-cap, addition of a Poly-A tail, and removal of introns
	c.	addition of introns
	d.	removal of introns and splicing together of exons
	e.	removal of introns

QUESTION 39

1. Which of the following statements is INCORRECT about promoters?

	a.	promoters direct the RNA Polymerase to the template
	b.	the promoter dictates which of the two DNA strands will serve as the template
	c.	promoters are used to terminate transcription
	d.	the promoter positions the RNA Polymerase over the +1 start site

QUESTION 40

1. Where does synthesis of the product actually begin in Translation?

	a.	5'-cap
	b.	Origin of Replication
	c.	+1 Start Site
	d.	Primer
	e.	Start Codon

Answer 1

ANSWERS -

31 Semiconservative replication of DNA means that: C. each daughter duplex will have one of the original parental strands and one new strand.( Replication of DNA is semiconservative means parental strand acts as template over which new strand is synthesized. Thus newly formed duplex has one original parental strand and one new strand.)

32. How is synthesis terminated in DNA Replication?a.DNA Polymerase runs out of template

33.Where in the cell does Transcription occur? C. Nucleus. ( for trancription DNA acts as template which is lacated in nucleus.)

34.What DNA sequence dictates which of the two DNA strands (of a DNA molecule) will function as the template for transcription? e. Promoter ( Orientation of promoter determines which strand will act as template for transcription).

35.RNA Polymerase requires a primer to synthesize RNA. False.( RNA Polymerase synthesizes RNA without primer. It requires only template DNA strand).

36.Which of the following enzymes is responsible for ensuring that genetic material at the end of the chromosome is not lost during DNA replication? d. Telomerase ( At the end of the chromosome telomere is located which get shorten during DNA replication but telomerase maintains the length of the telomere.)

37.What attracts or directs the synthesis enzyme to the template in Transcription?a. Promoter( During transcription RNA polymerase look for promoter in DNA strand).

38. mRNA transcripts must be processed before transport out into the nucleus. Which of the following lists all of the modifications made to a pre-mRNA transcript? b. addition of a 5'-cap, addition of a Poly-A tail, and removal of introns ( RNA modification involves 5' end capping, 3' end poly A tailing and splicing i.e. removal of introns and joining of exons).

39.Which of the following statements is INCORRECT about promoters?c. promoters are used to terminate transcription ( Promoter is needed to start trancription and for termination of transription terminator sequence in needed).

40.Where does synthesis of the product actually begin in Translation? e. Start Codon ( Start codon is sequence which code for first amino acid in polypeptide).