1. transcriptional and processing level
2. processing and transcriptional level
3. transport of mRNA from nucleus to the cytoplasm
4. All of the above
All of the above
1. recognize start sites
2. bind ti initiator
3. terminate the polypeptide chain
4. release the polypeptide chain
recognize start sites
1. a specific operator
2. a specific repressor
3. Both of these
4. None of these
Both of these
1. Francois Jacob and Jacque Monod
2. Alfred Hershey and Martha Chase
3. Oswald Avery and Macleod
4. Sever Ochoa and Nirenberg
Francois Jacob and Jacque Monod
1. positive regulation
2. negative regulation
3. feed back regulation
4. None of these
negative regulation
1. switching on of the operon
2. switching off of the operon
3. synthesis of polypeptide chain
4. Both (s) and (b)
Both (s) and (b)
1. Glucose acts as inducer for lac operon
2. Galactose acts as inducer for lac operon
3. Glucose or galactose act as inducers for lac operon
4. Glucose or galactose cannot act as inducers for lac operon
Glucose or galactose cannot act as inducers for lac operon
1. informational RNA
2. tenplate RNA
3. transfer RNA
4. All of these
All of these
1. ribosomal RNA
2. messenger RNA
3. trancfer RNA
4. template RNA
ribosomal RNA
1. tRNA
2. mRNA
3. rRNA
4. None of these
tRNA