ZOO-CC-243

Find the incorrect statement about plasmids    

• they are circular

• they replicate independently

• they are transferrable

• they are single stranded

If the DNA strand has nitrogenous base sequence ATTGCC, the mRNA will have?    

• ATTGCA

• UGGACC

• UAACGG

• ATCGCC

In DNA, the enzyme which breaks the H₂ bonds is

• Ligase

• Helicase

• Topoisomerase

• Polymerase

Anticodon is present in

• DNA

• tRNA

• rRNA

• mRNA

Which of the following RNAs are the most abundant in an animal cell?    

• mRNA

• tRNA

• miRNA

• rRNA

Sigma factor is a component of

• DNA ligase

• DNA polymerase

• Endonuclease

• RNA polymerase

A DNA sequence is read by an RNA polymerase which creates complementary antiparallel RNA strand is regarded as

• Secondary Transcript

• Tertiary Transcript

• Hexa Transcript

• Primary Transcript

Transcription occurs along a ____ template forming an mRNA in the ____ direction

• 5' to 3'; 5' to 3'

• 5' to 3'; 3' to 5'

• 3' to 5'; 5' to 3'

• 3' to 5'; 3' to 5'

The sequence of the structural genes in the lac operon is

• lacA-lacZ-lacY

• lacZ-lacY-lacA

• lacZ-lacA-lacY

• lacA-lacY-lacZ

The correct option regarding the lac operon in E.coli from the following is

• Lac operon is switched on in the absence of lactose

• Lac repressor binds to the lac promoter

• β-galactosidase is the only enzyme produced in large quantities when lac operon is turned on

• Lac operon messenger RNA is a polycistronic mRNA