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WorksheetsGCMB-604
Total questions: 20
Worksheet time: 20mins
Which of the following equation shows DNA renaturation reaction?
Sec 60
Cot1/2
Tan 30
Cot 40
What is the relationship among DNA, a gene, and a chromosome?
A chromosome contains hundreds of genes, which are composed of DNA.
A chromosome contains hundreds of genes, which are composed of protein.
A gene contains hundreds of chromosomes, which are composed of protein.
A gene is composed of DNA, but there is no relationship to a chromosome
The DNA binding proteins bind at the _______________
Minor groove
Major groove
Phosphate molecules
Pentose sugars
During DNA denaturation, which of the following occurs?
Unwinding of DNA double strand
Absorbance of UV rays
Decrease in hydrophobic interactions of base stacking
All of the mentioned
Euchromatin chromosomes having characteristic feature contain
stains lightly
is partially condensed
genetically active chromatin with genes
all of the above
Which of the following statement is NOT true in eukaryotic system?
The genetic material lies within the cytoplasm of cell
The 22 pairs of chromosomes are known as autosomes
Gene contains code that makes specific type of protein
DNA contains 2 strands
The 5’ and 3’ number are related to the
Length of the DNA strand
Carbon no. in the sugar
The Number of Phosphate
The base pair rule.
RNA is generally single stranded molecule. Which statement is incorrect regarding this molecule?
RNA contain uracil
RNA can only be found inside the nucleus
RNA is a single stranded molecule
RNA contains genetic information
Which molecules are part of RNA and DNA both?
Uracil
Thymine
Nucleotides
Deoxyribose sugar
How does genome complexity of denatured DNA measure?
Giemsa staining
Reverse chromatography
Denaturation kinetics
Renaturation kinetics
All of the following are true about nucleotide excision repair except.
Removal of the damage base occurs on only one strand of the DNA
It involves the activity of an excision nuclease, which is endonuclease
It requires a polymerase and ligase
Only the damaged nucleotides are removed.
The sigma factor subunit of prokaryotic RNA polymerase
Is part of the core coenzyme
Bind the antibiotic rifampicin
Must be present for transcription to occur.
Specially recognizes promoter sites
What is the main damaging effect of UV radiation on DNA
Depurination
Formation of Thymine Dimers
Single strand breaks
Dehydrations.
What is the only common methylation in the DNA of eukaryotics.
Adenosine in cPA dinucleotide
Guanosine in APCPA trinucleotide
Cytosine in CPG dinucleotide
None of the above
Which of the following enzymes are used to join segment of DNA
DNA ligase
DNA polymerase
Primase
Endonuclease
The first protein complex to bind the TATA box is
Transcription factor IIB
Transcription factor IIA
Transcription factor IID
All of the above
In eukaryotes there are three different RNA polymerase.The RNA polymerase responsible for transcription of mRNA is
RNA polymerase I
RNA polymerase II
RNA polymerase III
All of the Above
Name the sequence of RNA, which is recognized by a small subunit of the ribosome.
Rho utilization site
Downstream sequence
Upstream sequence
Shine Dalgarno sequence
Before RNA polymerase can initiate transcription, this protein must bind to it, creating the RNA polymerase holoenzyme and allowing for the initiation of transcription.
Topoisomerase
Sigma factor
Helicase
Activator protein
Each replication Bubbles contain.
4 Replication forks
2 Replication forks
8 replication Forks
None of the replication forks.
