Match List I with List - II. -

List - l	List - II
(A) Francis Crick	(l) DNA is the genetic material
(B) Watson and Crick	(II) Transforming principle
(C) Hershey and Chase	(III) Central dogma in molecular biology
(D) Frederick Griffith	(IV) Double helical structure of DNA

Choose the correct answer from the options given below:

Arrange the steps of agarose gel electrophoresis in a correct sequence :
(A) Visualisation of DNA fragments under UV light
(B) Movement of the DNA fragments under electric field towards anode
(C) Loading the DNA in the wells
(D) Staining of DNA fragments with ethidium bromide
Choose the correct answer from the options given below :

The identifying features of the embryo of monocotyledons are:
(A). Coleoptile
(B). Root cap enclosed in coleorhiza
(C). Pericarp
(D). One cotyledon
Choose the correct answer from the options given below:

Match List-l with List-II

List-l (Scientists)	List-II (Discoveries)
(A) Frederick Griffith	(I) Genetic Code
(B) Francois Jacob and Jacque Monad	(II) Semi-conservative mode of DNA replication
(C) Har Gobind Khorana	(III) Transformation
(D) Meselson and Stahl	(IV) Lac operon

Choose the correct answer from the options given below:

We use microbes and microbially derived products almost every day. Bacteria called lactic acid bacteria (LAB) grow in milk to convert it into curd. The dough, which is used to make bread, is fermented by yeast called Saccharomyces cerevisiae. Microbes are used to produce industrial products like lactic acid, acetic acid and alcohol, which are used in a variety of processes in the industry. However, certain bacteria, which grow anaerobically on cellulosic material, produce large amount of methane along with CO2 and H2. These bacteria are collectively called methanogens, and one such common bacterium is Methanobacterium. These bacteria are commonly found in the anaerobic sludge during sewage treatment. Microbes are also used for commercial and industrial production of certain chemicals like organic acids, alcohols and enzymes.
Examples of acid producers are Aspergillus niger (a fungus) of citric acid. You are familiar with the commonly used antibiotic Penicillin. Do you know that Penicillin was the first antibiotic to be discovered, and it was a chance discovery? 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.
Citric acid is commercially obtained by Aspergillus niger, which is a:

In which part of the body of a mosquito the malarial parasite are stored?

Match List - I with List - II.

List - I	List - II
(A) Australian marsupials	(I) Homologous organs
(B) Wings of butterfly and wings of a bird	(II) Natural selection
(C) Industrial melanism	(III) Adaptive radiation
(D) Forelimbs of Horse and Bat	(IV) Analogous organs

Arrange the following stages of life cycle of malarial parasite starting from the entry of parasite in the host liver:
(A) Fertilization in the mosquito gut after a blood meal from infected person.
(B) Formation of gametocytes in the host RBC
(C) Asexual reproduction of parasite in host RBC causing cycles of fever
(D) Asexual reproduction in the liver followed by cell burst
Choose the correct answer from the options given below:

A 95% confidence interval states that the population mean is greater than 152 and less than 160.
If \(\sigma=15\) and \(Z_{0.025}=1.96\), then what sample size was used in the study?

\(A\) random variable \(X\) has the following probability distribution:

X	0	1	2	3
P(X)	0.2	0.1	0.3	0.4

The variance of \(X\) will be

Which of the following statements about the Sinking Fund are correct?
(A) It is a fund established by a business entity by setting aside revenue over a period of time to fund a future capital expense.
(B) It is a fund established by a business entity by setting aside revenue over a period of time to fund a future repayment of a long-term debt.
(C) It is set up for any purpose that it may serve.
(D) It is a fund that is accumulated for the purpose of paying off a financial obligation at some future designated date.
Choose the correct answer from the options given below :

Which of the following statements is true about galvanometer?

Read the passage given below and answer the question.
The transition elements which give the greatest number of oxidation states occur in or near the middle of the series. Manganese, for example, exhibits all the oxidation states from +2 to +7. The lesser number of oxidation states at extreme ends stems from either too few electrons to lose or share (Sc, Ti) on too many d-electrons (hence fewer orbitals available in which to share electrons with others) for higher valence (Cu, Zn). Thus early in the series scandium (II) is virtually unknown and titanium (IV) is more stable than Ti (III) or Ti (II). At the other end, the only oxidation state of zinc is +2 (no d electrons are involved). The maximum oxidation states of reasonable stability correspond in value to the sum of the s- and d-electrons upto manganese (\(TiO_2, VVO^+, CrVIO_4^{2-}, MnVIIO_4\)) followed by a rather abrupt decrease in stability of higher oxidation states, so that the typical species to follow are \(Fe^{II,III}, Co^{II,III}, Ni^{II}, Cu^{I,II}, Zn^{II}\).
The variability of oxidation states, a characteristic of transition elements, arises out of incomplete filling of d-orbitals in such a way that their oxidation states differ from each other by unity, e.g. \(V^{II}, V^{III}, V^{IV}, V^{V}\). This is in contrast with the variability of oxidation states of non transition elements where oxidation states normally differ by a unit of two.
An interesting feature in the variability of oxidation states of the d-block elements is noticed among the groups (groups 4 through 10). Although in the p-block, the lower oxidation states are favoured by the heavier members (due to inert pair effect), the opposite is true in the groups of d-block. For example, in group 6, Mo(VI) and W(VI) are found to be more stable than Cr(VI). The Cr(VI) in the form of dichromate in acidic medium is a strong oxidising agent, whereas \(MoO_3\) and \(WO_3\) are not.
Low oxidation states are found when a complex compound has ligands capable of \(\pi\)-acceptor character in addition to the \(\sigma\)-bonding. For example, in \(Ni(CO)_4\) and \(Fe(CO)_5\), the oxidation state of nickel and iron is zero.
The elements giving minimum number of oxidation states are in extreme left and right in 3d series.
This is because :