List of practice Questions

Choose the correct order of steps involved in nucleotide excision repair of damaged bases as their occur.
A. A fresh burst of DNA synthesis
B. Cuts are made on both the 3' side and the 5' side of the damaged area
C. The DNA is unwound producing a "bubble".
D. A DNA ligase covalent binds the fresh piece into the backbone.
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Match LIST-I with LIST-II
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Frequency of recombination between linked genes in Drosophila is affected by
A. Distance between genes
B. Sex of heterozygotes for linked genes
C. Age of female
D. Temperature
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Match the LIST-I with LIST-II
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The plants bloom when the light duration is less than 12 hours per day are know as.
A rock body through which ground water flows is called
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The left-handed helix, Z-DNA is 18 \AA \ (1.8 nm) in diameter which contains _____________________.
Choose the correct sequence of events as they occur during a bacterial transcription
A. RNA polymerase sigma (\(\sigma\)) subunits recognizes promoters
B. DNA double helix unwind
C. Sigma (\(\sigma\)) subunit dissociates from the holoenzyme
D. Formation of hairpin secondary structure
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Choose the correct answer regarding the translation of mRNA to proteins when AUG is the start codon and codes for methionine.
Typhoid Vi antigen type of vaccine is:
Which one of the given statement is not correct about plant viruses ?
Hepatitis C virus can cause liver cancer. It has:
The role of slow sand filters in water treatment facilities is:
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The F\(_1\) hybrid (Rr Ii) is crossed with a variety double recessive for both the traits. How many types of zygotes will be produced in the cross?
Which of the following statement is wrong about C\(_4\) plants
The Ti plasmid and its T-DNA have been genetically modified for use as a vector for the insertion of recombinant DNA into plant chromosomes to prevent dicots from tumor diseases. The source of Ti plasmid is:
The ability of a molecule to function as an antigen depends on its:
A. Size
B. Structural complexity
C. Chemical nature
D. Degree of foreign nature to the host
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Match LIST-I with LIST-II
LIST-I (Immunoglobulin Class) LIST-II (Characteristics)
A. IgGI. Serves as part of B-cell receptor complex  
B. IgAII. Anaphylactic mediating antibody  
C. IgDIII. Most abundant in body fluid, neutralize toxins, opsonizes bacteria  
D. IgEIV. Secretory antibody and protect mucous membrane  
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The cationic antimicrobial peptide, histatin is found in human's_____________.
Convalescent sera belongs to
A method for culturing anaerobes is the GasPak System, which uses hydrogen and a ___________ catalyst to remove O\(_2\).
The antimicrobial agent mercuric chloride functions by
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