The bond between two successive nucleotides in RNA is

Which one of the following statements is not correct regarding the DNA?

Sex determination in grasshopper is of -

Match List-I with List-II

List-I (Types of evolution)	List-II (Examples)
(A) Divergent evolution	(I) Moths
(B) Adaptive radiation	(II) Eyes of octopus and mammals
(C) Convergent evolution	(III) Darwin's finches
(D) Industrial melanism	(IV) Thorn of Bougainvillea and tendrils of Cucurbita

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Read the given passage carefully and answer the questions
Antibiotics have greatly improved our capacity to treat deadly diseases such as plague, whooping cough (kali khansi), diphtheria (gal ghotu) and leprosy (kusht rog), which used to kill millions all over the globe.
Streptokinase produced by the bacterium Streptococcus and modified by genetic engineering is used as a 'clot buster' for removing clots from the blood vessels of patients who have undergone myocardial infarction leading to heart attack. Microbes are diverse-protozoa, bacteria, fungi and microscopic animal and plant viruses, viroids and also prions that are proteinacious infectious agents. The puffed-up appearance of dough is due to the production of CO₂ gas. Similarly the dough, which is used for making bread, is fermented using baker's yeast (Saccharomyces cerevisiae). Primary sewage treatment basically involve physical removal of particles - large and small from the sewage through filtration and sedimentation. These are removed in stages; initially, floating debris is removed by sequential filtration. Then the grit (soil and small pebbles) are removed by sedimentation. All solids that settle form the primary sludge, and the supernatant forms the effluent. The effluent from the primary settling tank is taken for secondary treatment. The primary effluent is passed into large aeration tanks, where it is constantly agitated mechanically and air is pumped into it. This allows vigorous growth of useful aerobic microbes into flocs. While growing, these microbes consume the major part of the organic matter in the effluent.
Primary sludge treatment involves -

Match List - I with List - II.

List I (Name)	List - II (Functions)
(A) mRNA	(I) amino acid carrier
(B) rRNA	(II) structural and catalytic role during translation
(C) tRNA	(IV) template for protein synthesis
(D) cistron	(III) gene

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Arrange the following steps of sewage treatment in a sequential order.
(A) Primary effluent passed in aeration tank
(B) Activated sludge is formed
(C) Filtration and sedimentation of sewage
(D) Aerobic microbes grow into flocs
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Arrange the following in increasing order of basic strength in aqueous solution :
(A) \(C _6 H _6 NH _2\)
(B) \(C _2 H _5 NH _2\)
(C) \(\left( C _2 H _6\right)_2 NH\)
(D) \(NH _3\)
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The speed of electromagnetic waves in a material medium is given by (symbols have their usual meanings):

If \(f: R \rightarrow R\) be given by \(f(x)=\left(3-x^3\right)^{\frac{1}{3}}\), then \((f \circ f)(x)\) is:

Amniocentesis should not be used for:

The two possible positions of an object kept in front of a lens of power +5.0 D, so that the image formed in both cases is four times magnified, are
(A) -30 cm
(B) -25 cm
(C) -15 cm
(D) -45 cm
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Which of the following techniques are commonly used for early detection
of cancer?
(A) Biopsy and histopathological studies
(B) Radiography (x-rays)
(C) MRI (Magnetic Resonance Imaging)
(D) Electrocardiogram (ECG)
Choose the correct answer from the options given below: