The A and B polypeptides chains in insulin are linked together by which bond?

Read the given passage and answer the question given below.
The sex linked recessive disease, which shows its transmission from unaffected carrier female to some of the male progeny has been widely studied. In this disease, a single protein that is a part of the cascade of proteins involved in the clotting of blood is affected. Due to this in an affected individual a simple cut will result in non-stop bleeding. The heterozygous female (carrier) for the disease may transmit it to sons. The possibility of a female becoming a sufferer of disease is extremely rare because mother of such a female has to be at least carrier and the father should be sufferer. The family pedigree of Queen Victoria shows a number of suffering descendents as she was a carrier of the disease.
Man who is sufferer of the disease marries a woman who is a carrier of this disease. What percentage of children born as carrier of this disease?

When syngamy occurs inside the body of an organism, it is known as:

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:

Which of the following is NOT a technique of genetic engineering?

Observe the given figures and answer the question

Which of the following correctly identifies the storage tissue and outer covering in Figure III?
A. J-Endosperm, K-Seed coat
B. I-Cotyledon, J - Endosperm
C. K-Aleurone layer, J - Testa
D. I-Endosperm, H - Radicle

Cryopreservation technique used for the conservation of threatened animals and plants is:

When two independent small samples of sizes \(n_1\) and \(n_2\) with means \(\bar{x}_1\) and \(\bar{x}_2\) respectively are drawn from populations with identical population variances, the test-statistic is computed as :

Match the List-l with List-II

List-l (Character)	List-II (Recessive Trait)
(A) Flower Colour	(I) Green
(B) Seed colour	(II) Yellow
(C) Pod colour	(III) Constricted
(D) Pod shape	(IV) White

Choose the correct answer from the options given below:

The products for the reaction of KMNO₄ with potassium iodide in acidic solutions are

Two nuclei with mass numbers A and B have density ratios of :

The value of \(\tan \left(\cos ^{-1} x\right)\) is:

The reaction of aliphatic and aromatic primary amines with chloroform in the presence of ethanolic potassium hydroxide to produce compound with fouling smell, is known as