Ori and Replication Fork

Q.

What do you mean by recombination in bacteria?

Q.

Why does DNA contain thymine and RNA uracil?

Q.

Which one of the following is not applicable to RNA?

1. Chargaff’s rule

2. 5′ phosphoryl and 3′ hydroxyl ends

3. Heterocyclic nitrogenous bases

4. Complementary base pairing

Q.

What is the role of primers in PCR?

Q.

What happens if DNA replication does not occur?

Q. Repetitive DNA in humans shows

1. Low degree of polymorphism
2. Moderate polymorphism
3. High degree of polymorphism
4. No polymorphism

Q.

How does RNA primer work?

Q.

What Is Asymmetric PCR?

Q.

What is a translation unit in mRNA?

Q.

How are RNA primers removed?

Q. Dear sir ,
As we know that we have one origin of replication in prokaryotes., and we have many origin of replication in eukaryotes. Why is this so? In both the cases the whole DNA is getting replicated anyway , so why like that then?

Q.

What happens during annealing in PCR?

Q.

What is Ori?

Q. What is base complementary rules, ?and who proposed it?
Erwin chargaff or Watson and crick

Q. Which of these is NOT a part of the transcription unit?

1. Terminator
2. Introns
3. Exons
4. Promoter

Q. The specific DNA sequence in the genome of an organism at which DNA replication gets initiated is called

1. Ori
2. RNA primer
3. origin of replication
4. Okazaki fragment

Q. Transfer of DNA into eukaryotic cell is called

1. Transformation
2. Transduction
3. Transfection
4. Infection

Q. Replication fork is

1. The site at which DNA replication is initiated
2. The junction between the newly separated DNA template strands and the unreplicated DNA duplex
3. The Okazaki fragment together with the respective template strand
4. Synonymous to ori site

Q.

How do bacteriophages and plasmids serve as tools of recombinant DNA technology?

Q.

Describe briefly the following

(a) Origin of replication

(b) Bioreactors

(c) Downstream processing

Q.

Genetic material of retrovirus is

1. ss DNA

2. ds DNA

3. ss RNA

4. ds RNA

Q.

Which is the largest virus?

Q.

DNA replication occurs during which part of the cell cycle?

1. S phase

2. G₂ phase

3. G₁ phase

4. Dividing phase

Q. Explain the mechanism of DNA replication with the help of a replication fork. What role does the enzyme DNA-ligase play in a DNA replication fork?

Q. Genetic code is a set of rules which helps to decode the information stored in ___i____ and determine _____ii______.

1. i - genetic material
   ii - sequence of amino acids in a protein
2. i - proteins
   ii - genetic material
3. i - histones
   ii - sequence of amino acids in a protein
4. i - amino acids
   ii - genetic material

Q. Differentiate between a DNA and RNA nucleotide. [1 Mark]

Q.

What is reproduction? Mention the importance of DNA copying in reproduction.

Q. Statement I: The codon 'AUG' codes for methionine and phenylalanine.

Statement II : 'AAA' and 'AAG' both codons code for the amino acid lysine.

In the light of the above statements, choose the correct answer from the options given below.

1. Statement I is incorrect but Statement II is true
2. Both Statement I and Statement II are true
3. Both Statement I and Statement II are false
4. Statement I is correct but Statement II is false

Q. Process of synthesis of yolk material is known as–

1. Oogenesis
2. Biogenesis
3. Vitellogenesis
4. Lipogenesis

Q. What is DNA replication? What is its significance?