Which one of the followings is an indirect measure of the organic matter present in water?

Identify the correct sequence of events during the menstrual cycle in female.
(A) Next cycle begins
(B) Proliferative phase
(C) Menstruation
(D) Secretory phase
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Of the incident solar radiation, less than _______ of it is photosynthetically active radiation (PAR).

Identify the statements which hold true for transgenic animals.
(A) Transgenic animals can be used to study vaccine safety.
(B) Over 95% of transgenic animals are mice
(C) Transgenic animals cannot be used to study human diseases
(D) Transgenic animal possess and express forgein gene

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:

According to Gause's Competitive Exclusion Principle:

Identify the correct statements regarding EcoRI:
(A) It cuts DNA between A and T when GAATTC palindrome is present in the DNA
(B) It produces blunt ends in the fragments
(C) The blunt ends facilitates the action of the enzyme
(D) It cuts DNA between G and A when GAATTC sequence is present in the DNA
(E) GAATTC is the palindrome recognized by EcoRI
Choose the correct answer from the options given below : Only

For the differential equation \(x \frac{d y}{d x}+2 y=x^2 \log _e x\)
(A) Integrating factor is \(2 x\)
(B) Integrating factor is \(x^2\)
(C) General Solution is \(y=\frac{x^2}{16}\left(4 \log _e|x|-1\right)+C x^{-2}\), where \(C\) is an arbitrary constant.
(D) General Solution is \(y=\frac{x^4}{16}\left(4 \log _e|x|-1\right)+C\), where \(C\) is an arbitrary constant.
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If the system of equation
\(x-y+z=4\)
\(x-2 y-2 z=9\)
\(2 x+y+\lambda z=1\)
has a unique solution, then

The unequivocal proof that DNA is the genetic material came from the experiments of -

The correct structure of the dipeptide Gly-Ala (glycyl alanine) is:

In humans, the fertilization takes place at -

A coin is tossed 3 times. If \(X\) denotes the number of heads, then Match List I with List II

LIST I	LIST II
A. \(P(X=0)\)	I. \(\frac{1}{8}\)
B. \(P(X=1)\)	ㅍ. \(\frac{7}{8}\)
C. \(P(X \leq 2)\)	III. \(\frac{4}{8}\)
D. \(P(X \geq 2)\)	IV. \(\frac{3}{8}\)

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