Jacob and Monad studied lactose metabolism in E.Coli and proposed the Operon concept. The Operon concept is applicable to:
1. All prokaryotes
2. All prokaryotes and some eukaryotes
3. All prokaryotes and all eukaryotes
4. All prokaryotes and some protozoans
Exon part of m-RNAs have code for:
1. Protein
2. Lipid
3. Carbohydrate
4. Phospholipid
Which of the following reunites the exon segments after RNA splicing:
1. RNA polymerase
2. RNA primase
3. RNA ligase
4. RNA proteases
The nucleus of a donor embryonal cell/somatic cell is transferred to an enucleated egg cell. Then after the formation of the organism, what shall be true:
1. | Organism will have extranuclear genes of the donor cell |
2. | Organism will have extranuclear genes from the recipient cell |
3. | Organism will have extranuclear genes of both donor and recipient cell |
4. | Organism will have nuclear genes of the recipient cell |
Which of the following is the initiation codon:
1. UAG
2. AUC
3. AUG
4. CCU
The method of DNA replication in which two strands of DNA separate and synthesize new strands is called:
1. Dispersive
2. Conservative
3. Semiconservative
4. Non-conservative
Living beings maintain continuity of life by:
1. | Adaptation |
2. | DNA–replication and its transfer in the next generation |
3. | RNA synthesis |
4. | None of the above |
Which of the following is correct about H-bonding in nucleotide:
1. A–T G–C
2. A–G T–C
3. G–T A–C
4. A–A T–T
Chargaff's rule states that in an organism:
1. | The amount of adenine (A) is equal to that of thymine (T) and the amount of guanine (G) is equal to that of cytosine (C). |
2. | The amount of adenine (A) is equal to that of guanine (G) and the amount of thymine (T) is equal to that of cytosine (C). |
3. | The amount of adenine (A) is equal to that of cytosine (C) and the amount of thymine (T) is equal to that of guanine (G). |
4. | Amounts of all bases are equal. |
During translation initiation in prokaryotes, a GTP molecule is needed in:
1. | Formation of formyl-met-tRNA |
2. | Binding of 30S subunit of the ribosome with mRNA |
3. | Association of 30 S-mRNA with formyl met-tRNA |
4. | Association of 50 S subunit of the ribosome with the initiation complex |