Host bacterium is made competent to accept DNA by treating it with:

Answer the questions from the figure given below:

Taq polymerase is the preferred DNA polymerase in PCR because :

Read the passage carefully and answer the given questions. DNA Fingerprinting
Polymorphism in DNA sequence is the basis of genetic mapping of the human genome as well as of DNA fingerprinting. DNA fingerprinting involves identification of differences in some specific regions in the DNA sequence called repetitive DNA. It works on the principle of polymorphisms in DNA sequences. The repetitive DNA are separated from bulk genomic DNA. The bulk DNA forms a major peak and the other small peaks are referred to as satellite DNA. These repetitive/satellite DNA sequences show a high degree of polymorphisms and form the basis of DNA fingerprinting.
Variable Number of Tandem Repeats are -

Match List I with List II

LIST I	LIST II
A. Mucus lining	I. Physiological barrier
B. Acid in stomach	II. Cellular barrier
C. PMNL-neutrophils	III. Physical barrier
D. Interferons	IV. Cytokine barrier

Choose the correct answer from the options given below:

Totipotency refers to the capacity of a -

Which of the following microbe lives in symbiotic association in roots nodules of leguminous plants?

Which of following statements are true about DNA structure?
A. DNA is made of two polynucleotide chains
B. The two chains have anti-parallel polarity
C. The two chains are coiled in a left-handed fashion
D. Distance between a base pairs in a helix is approximately equal to 3.4 nanometre
Choose the correct answer from the options given below:

Answer the question on basis of passage given below :
Molecular nitrogen is very little reactive chemically. During lightning discharge, atmospheric nitrogen and oxygen combines to form nitric oxide which also combines with oxygen to form nitrogen dioxide. Both NO and \(NO _2\) constitute smog which is very poisonous. It can cause burning sensasion in the eyes and adversely affect respiratory system.
What is the colour of nitrogen dioxide.

A lot of \(50\) watches is known to have \(10\) defective watches. If \(8\) watches are selected one by one with replacement at random, then the probability that there will be at least one defective watch is:

The correct sequence for product formation according to the Collision theory of chemical reaction is
(A) Proper orientation
(B) Molecules collide with threshold energy
(C) Intermediate formation
(D) Formation of products
Choose the correct answer from the options given below:

The equation of tangent to the curve given by \(x=a \sin ^3 t, y=b \cos ^3 t\) at a point where \(t=\frac{\pi}{2}\) is :

Slope of the graph given is \(-9.2 J / mol\). The activation energy for the reaction is : [Given \(R =8.3 J K ^{-1} mol^{-1}\) ] 

Which of the following two STIs can be transmitted through contaminated surgical equipment and are not completely curable?