Arrange the following in correct sequence with respect to the events of menstrual cycle:
(A) Development of primary follicle to graafian follicle
(B) Attainment of peak level in luteinising hormone
(C) Release of ovum by graafian follicle
(D) Formation of corpus luteum
Choose the correct answer from the options given below:

Which of the given example explains evolution by anthropogenic action?

Identify the molecular diagnostic technique from the following:
(A) Enzyme Linked Immuno Sorbent Assay
(B) Polymerase Chain Reaction
(C) Cloning
(D) Recombinant DNA Technology
Choose the correct answer from the options given below :

All food chains begin with producers, except -

Which enzyme is used in detergents to remove stains from laundry?

Which of the following is used as 'clot buster'?

Microbes in human welfare Microbes are a very important component of life on earth. we use microbes and microbially derived products almost every day, like LAB to make curd, yeast to make bread, adding flavor and texture to cheese, producing antibiotics etc. The addition of LAB, improves the milk quality by increasing vit. B12. Cheese is one of the oldest food items in which microbes are used. For example, large holes in Swiss cheese are due to CO2 produced by the bacterium Propionibacterium sharmanii. 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 greater the BOD of waste water, the more is its polluting potential. In anaerobic sludge digesters, bacteria produce a mixture of gases like methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as a source of energy. Biofertilisers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilisers are bacteria, fungi and cyanobacteria. You have studied about the nodules on the roots of leguminous plants formed by the symbiotic association of Rhizobium. These bacteria fix atmospheric nitrogen into organic forms, which is used by the plant as a nutrient. Other bacteria can fix atmospheric nitrogen while free-living in the soil (examples Azospirillum and Azotobacter).
In anaerobic sludge digesters, the biogas produced by the bacteria, is composed of -

Which of the following statements about hormones is incorrect?

In a LPP , if the objective function \(Z=a x+b y\) has the same maximum value at two corner points of the feasible region, then the number of points at which \(Z_{\max }\) occurs is:

Arrange the steps of Polymerase chain reaction in proper sequence-
A. Selection of desired fragment of DNA
B. Annealing
C. Amplification
D. Extension
E. Denaturation
Choose the correct answer from the options given below

If \(\operatorname{det}\left(\begin{array}{cc}2 x & 5 \\ 8 & x\end{array}\right)=\operatorname{det}\left(\begin{array}{cc}6 & -2 \\ 1 & 1\end{array}\right)\), then the value of \(x\) is

Bulb B1 is a 50 W bulb working on 100 V and Bulb B2 is a 200 W bulb also working on 100 V. The ratio of resistances of bulbs B1 to B2 is:

If the minimum value of the objective function \(Z=a x+b y\) of an LPP occurs at two points \((3,5)\) and \((5,3)\), then