List of practice Questions

Retroviruses are enveloped viruses that can be engineered to deliver how many bases of single-stranded RNA?

The complete proteins produced by an organism at any one time is called:

Arrange the given processes involved in the nitrogen cycle:
(A) Ammonia formation
(B) Organic nitrogen formation
(C) Soil organic nitrogen formation
(D) Nitrate formation
Choose the correct answer from the options given below:

What are the functions of topoisomerases?

With the addition of linking number (Lk) by +2 to a relaxed DNA consisting of Lk = 200, which of the following occurs?

Arrange according to their lower to higher genome size:
(A) Lambda (λ)
(B) T4
(C) Φ x 174
(D) T7
Choose the correct answer from the options given below:

Nucleosome is basically composed of:
(A) Histone core
(B) Linker histone
(C) Core DNA
(D) Linker DNA
Choose the correct answer from the options given below:

Match List I with List II:

List I	List II
(A) Histone erasers	(III) Deacetylases
(B) Histone readers	(IV) Bromodomain proteins
(C) Histone writers	(I) Methyltransferase
(D) DNA unwinding	(II) Topoisomerase

Choose the correct answer from the options given below:

What percentage of genes are found in the human genome?

Number of chromosomes present in Arabidopsis thaliana is:

Match List I with List II:

List I (Enzyme)	List II (Reaction)
(A) DNase I	(I) Produces single-stranded nicks in DNA
(B) RNase A	(II) Degrades single-stranded RNA
(C) S1 nuclease	(III) Degrades single-stranded DNA
(D) RNase H	(IV) Cleaves the RNA strand of RNA-DNA hybrids

Choose the correct answer from the options given below:

In the technique called centrifugation, the centrifugal field (G) is calculated as:

Which is not a unit of radioactivity?

Vertical gel electrophoresis is routinely used for the separation of:

Arrange the given steps involved in polymerase chain reaction (PCR):
(A) Denaturation
(B) Annealing
(C) Extension
(D) Cycling
Choose the correct answer from the options given below:

Match List I with List II:

List I	List II
(A) Western Blotting	(II) Protein identification
(B) Southern Blotting	(I) DNA identification
(C) Northern Blotting	(IV) RNA identification
(D) Yeast two-hybrid system	(III) Protein-protein interaction

Choose the correct answer from the options given below:

Isoelectric focusing allows separation of the proteins according to their:

What is the role of sodium dodecyl sulfate (SDS) in protein electrophoresis?
(A) Add net negative charge to the protein
(B) Separate lipids on the basis of their molecular weight
(C) Modify native conformation of a protein
(D) Allows direct destaining of the proteins
Choose the correct answer from the options given below:

Which metal is used for electron beam generation in scanning electron microscopy?

The technique used to identify the specific DNA in bacterial colonies is:

Which of the following is not a fluorescence dye?

Identify the correct sequence of the given enzymes involved in the TCA cycle:
(A) Aconitase
(B) Fumarase
(C) Malate dehydrogenase
(D) α-ketoglutarate dehydrogenase
Choose the correct answer from the options given below:

Identify the correct sequence of the given intermediates formed during glycolysis:
(A) Fructose 1,6-biphosphate
(B) Fructose 6 phosphate
(C) Lactate
(D) Phosphoenolpyruvate
Choose the correct answer from the options given below:

Match List I with List II:

List I (Vitamin)	List II (Disorder)
(A) Vitamin-A	(I) Night blindness
(B) Vitamin-D	(II) Scurvy
(C) Vitamin-C	(III) Fat-soluble vitamin
(D) Vitamin-K	(IV) Blood clotting

Choose the correct answer from the options given below:

Which of the following enzyme is defective in galactosemia—a fatal genetic disorder in infants?