Which of the following components were taken by S.L. Miller in a closed flask for his experiment on the origin of life?
(A) CH₄
(B) NH₃
(C) CO₂
(D) Water vapours
Choose the correct answer from the options given below:

Arrange the following steps of genetically engineered insulin production.
(A) Isolation and purification of the insulin gene from beta cells of the
pancreatic islets
(B) Expression of gene in host cell
(C) Joining the two polypeptides by disulfide bonds
(D) Cloning of insulin gene in Escherichia coli cloning host cell
Choose the correct answer from the options given below:

Arrange the given steps involved in gel electrophoresis used for separation of DNA fragments?
(A) Exposure to UV light
(B) Staining with ethidium bromide
(C) Movement of DNA fragments towards anode
(D) Elution
Choose the correct answer from the options given below:

Which is correct about amensalism?

Match List I with List II.

LIST I	LIST II
A. Trichoderma polysporum	I. Statins
B. Monascus purpureus	II. Butyric acid
C. Aspergillus niger	III. Cyclosporin A
D. Clostridium butylicum	IV. Citric acid

Choose the correct answer from the options given below:

Read the passage carefully and answer the given questions.
Recombinant DNA Technology
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
Which one of the following techniques is used to amplify a specific DNA
sequence?

Observe the given figures and answer the question

Which of the following labels in Figure III correctly represent the protective sheaths of embryo?
A. E - Coleoptile
B. F - Coleorhiza
C. G - Plumule
D. H - Radicle

If A and B are symmetric matrices of the same order, then which of the following are true?
(A) AB - BA is a skew symmetric matrix
(B) AB is a symmetric matrix
(C) AB is a scalar matrix
(D) AB + BA is a symmetric matrix
Choose the correct answer from the options given below:

The brain capacity of Homo habilis was around ______ cc.

Answer the question on the basis of passage given below :
Formaldehyde is the first member of the aldehydic series. It is present in green leaves of plants where its presence is supposed to be due to the reaction of \(CO_2\) with water in the presence of sunlight and chlorophyll. Commercially, formaldehyde is obtained by the controlled oxidation of methane in the presence of molybdenum oxide (\(MoO\)) acting as a catalyst. Formaldehyde is a constituent of a number of polymers also called resins. These are non volatile solids or semi solids which are obtained directly from certain plants and can be synthesized in the laboratory.
Question: How is formalin useful?

The cost of type 1 rice is Rs. 20 per kg and type 2 rice is Rs. 30 per kg. If both Type 1 and Type 2 are mixed in the ratio \(2: 3\), then the price per kg of the mixed variety is

Identify the example of Australian Marsupial from the following:

If the money is worth \(8 \%\) per annum compounded semi-annually, then the present value of a sequence of payments of ₹ 1,000 made at the end of every 6 months and continuing forever, is: