1. RNA dependent RNA polymerase
2. DNA dependent RNA polymerase
3. DNA dependent DNA polymerase
4. RNA dependent DNA polymerase
RNA dependent DNA polymerase
1. Unstriated muscle cells
2. Red cells
3. Red blood cells
4. White blood cells
Red blood cells
1. each other
2. methyl groups
3. actin and myosin
4. nucleolus
methyl groups
1. Fructose 1,6- bisphosphate
2. Pyruvic acid
3. Acetyl CoA
4. Glucose – 6- phosphate
Acetyl CoA
1. artificial synthesis of DNA and RNA
2. theory of natural selection
3. one gene-one enzyme theory
4. mutation theory
artificial synthesis of DNA and RNA
1. genetic mapping of chromosomes
2. determining amino acid sequence of insulin
3. determining the base sequences of DNA of a virus
4. determining the structure of DNA
determining the base sequences of DNA of a virus
1. β-galactosidase
2. lactose
3. ‘T’ gene
4. promoter gene
lactose
1. The lac operon is repressed
2. All operons are induced
3. E. coli cells stop dividing
4. The lac operon is induced
The lac operon is induced
1. inducer gene to ‘switch on’ structural gene transcription
2. regulator gene to ‘switch off’ structural gene transcription
3. regulator protein to ‘switch off’ structural gene transcription
4. regulator protein to ‘switch on’ structural gene transcription
regulator protein to ‘switch off’ structural gene transcription
1. inhibiting transcription
2. inactivating enzymes
3. inactivating substrate
4. inhibiting migration of mRNA
inhibiting transcription