Which one of the following infections is completely curable?

The correct sequence of steps involved in polymerase chain reaction (PCR) are:
A. DNA polymerase is used to extends the primers using oligonucleotides.
B. Desired DNA fragments are denatured.
C. Amplified fragments are ligated with the vector for cloning.
D. Oligonucleotides are added
Choose the correct answer from the options given below:

'Barnacles' growing on the back of whale is a classical example of :

Which of the following is not the salient feature of Human Genome Project (HGP)?

Nowadays, biofertilisers are available in the market. Select the correct statements regarding biofertilisers given below:
(A) Biofertilisers increase the soil fertility.
(B) Biofertilisers kill the pathogenic microbes
(C) Biofertilisers increase the iron content in the soil
(D) Biofertilisers increase the crop production.
(E) Excess use of biofertilisers causes water and soil pollution.
Choose the correct answer from the options given below:

Androgens are synthesised and secreted by which of the following?

Which of the following bond in DNA strand is broken by the action of restriction enzyme?

Write the formula for Tetramminediaquacobalt (III) chloride.

Two point charges \( +4 \mu C \) and \( -2 \mu C \) are placed at a certain distance in air. They experience an attractive force \( F \). If they are brought in contact with each other and then separated to the same distance, the new repulsive force between them will be :

Read the given passage carefully and answer the questions
Salmonella typhi is a pathogenic bacterium which causes typhoid fever in human beings. Sustained high fever (39° to 40°C), weakness, stomach pain, constipation, headache and loss of appetite are some of the common symptoms of this disease. Typhoid fever could be confirmed by Widal test. Plasmodium enters the human body as sporozoites. The parasites initially multiply within the liver cells and then attack the red blood cells (RBCs) resulting in their rupture. The rupture of RBCs is associated with release of a toxic substance, haemozoin, which is responsible for the chill and high fever recurring every three to four days. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa-associated lymphoid tissue (MALT). In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant. Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally in the brain. Generally taken by inhalation and oral ingestion, these are known for their effects on cardiovascular system of the body.
Which one of the following statements is not true?

In an experiment with Meter Bridge, with unknown resistance R in the left gap, the null point is obtained at \( l_1 = 40 \text{ cm} \) from the left end. Now a resistance of \( R' = 10 \Omega \) is connected in series with resistance R, the null point is obtained at \( l_2 = 70 \text{ cm} \) from the left end. The value of resistance R is

What are the two types of isomerism that exist in \(\text{[Pt(Cl)}_2\text{(NO}_2)_2]\) ?

For \(SN_2\) reaction, the increasing order of the reactivity of the following alkyl halides is:
(A) \(CH _3 CH _2 CH _2 CH _2 Br\)
(B) \(CH 3 CH 2 CH ( Br ) CH 3\)
(C) \(( CH 3) 3 CBr\)
(D) \(( CH 3) 2 CHCH 2 Br\)