Which one of the following codons performs a dual function?

Which syndrome has karyotype of 45, XO in humans?

Identify the enzyme which is used for isolating genetic material from plant cells.

Which of the following is/are not the characteristics of wind pollinated flowers ?
A. Light and non-sticky
B. Possess well exposed stamens
C. Large and often feathery stigma
D. Often have many ovules in each ovary.
Choose the correct answer from the options given below :

Which hormone is responsible for ovulation in human females?

Which of the following species of animals are now extinct:
(A) Dodo from Mauritius
(B) Thylacine from Australia
(C) Quagga from Africa
(D) Steller's sea cow from Russia
Choose the correct answer from the options given below:

Read the following passage carefully and answer the given questions. During anaerobic sludge digestion, bacteria produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as source of energy as it is inflammable. The bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. You must have noticed that bottled fruit juices bought from the market are clearer as compared to those made at home. This is because the bottled juices are clarified by the use of pectinases and proteases. Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol. The BOD test measures the rate of uptake of oxygen by microorganisms in a sample of water and thus, indirectly, BOD is a measure of the organic matter present in the water.
The bottled juices are clarified by the combination of -

Aniline can be distinguished from ethanamine by

The value of \(m\) so that the lines \(\frac{1-x}{3}=\frac{7 y-14}{2 m}=\frac{z-3}{2}\) and \(\frac{7-7 x}{3 m}=\frac{y-5}{1}=\frac{6-z}{5}\) are at right angle is :

Arrange the following in increasing order of their basic strength in aqueous phase :
(A) \(CH_{3}NH_{2}\)
(B) \(C_{6}H_{5}CH_{2}NH_{2}\)
(C) \(C_{6}H_{5}NH_{2}\)
(D) \((CH_{3})_{3}N\)
Choose the correct answer from the options given below :

Which among these is not an ex-situ conservation method ?

Match List-I with List-II

List - I (Function)	List - II (Points of discontinuity)
(A) \(f(x)=\frac{x^2+1}{x}\)	(I) x = 4
(B) \(f(x)=\frac{|x-1|}{x-1}\)	(II) x = 2
(C) \(f(x)=\{x-1\), if \(x<2 ; x+1\), if \(x \geq 2\}\)	(III) x = 0
(D) \(f(x)=\frac{1-x}{x-4}\)	(IV) x = 1

Choose the Correct answer from the options given below :

Two cells with internal resistances \( r_1 \) and \( r_2 \) are connected across the load resistance R as shown in the figure. The values of \( r_1, r_2 \) and R are (1/2) \( \Omega \), (1/3) \( \Omega \) and (9/5) \( \Omega \), respectively. The current through R is: