Reverse transcriptase is a:
(1) DNA dependent RNA polymerase
(2) RNA dependent DNA polymerase
(3) RNA dependent RNA polymerase
(4) DNA dependent DNA polymerase
Which one of the following does not follow the central dogma of molecular biology?
(1) Pea
(2) Mucor
(3) Chlamydomonas
(4) HIV
One gene-one enzyme relationship was established for the first time in:
(1) Neurospora crassa
(2) Salmonella typhimurium
(3) Escherichia coli
(4) Diplococcus pneumoniae
One gene-one enzyme hypothesis was postulated by:
1. R. Franklin
2. Hershey and Chase
3. A. Garrod
4. Beadle and Tatum
Borne viruses do not have DNA. This suggests that
(1)They are non-infective viruses
(2)RNA is the genetic material in these viruses
(3)DNA is not the genetic material
(4)RNA is a self replicating molecule
The central dogma is
(1)Direction of flow of information from DNA→RNA→proteins
(2)the transfer of genetic information from same strand of DNA to m-RNA
(3)The faithful transfer of genetic information from DNA molecule to the next generation molecule through semi conservative mechanism
(4)Mendelism has established the principles of heredity
In some viruses, the flow of genetic information is from RNA to DNA. These viruses are:
(1) Reverse transcriptase
(2) Teminism
(3) Ribozymes
(4) Retroviruses
Study the diagram given below and choose the correct information that can be deduced:
1. | The core RNA polymerase is capable of catalyzing elongation only. |
2. | Sigma factor and Rho factor are needed for the termination of transcription. |
3. | DNA Helicase opens the strand of the DNA. |
4. | Both strands of DNA are transcribed by the same RNA polymerase. |
Which one of the following is wrongly matched?
1. | Transcription- Writing information from DNA to t-RNA |
2. | Translation- Using the information in m-RNA to make protein |
3. | Repressor protein- Binds to an operator to stop enzyme synthesis |
4. | Operon- Structural genes, operator, and promoter |
Match the following RNA polymerases with their transcribed products:
Column-I |
Column-II |
||
(a) |
RNA polymerase I |
(i) |
tRNA |
(b) |
RNA polymerase II |
(ii) |
rRNA |
(c) |
RNA polymerase III |
(iii) |
hnRNA |
Select the correct option from the following:
Options: | (a) | (b) | (c) |
1. | i | iii | ii |
2. | i | ii | iii |
3. | ii | iii | i |
4. | iii | ii | i |