Which of the following enzymes join the sticky ends in recombinant DNA technology?

The process through which spermatids are transformed into spermatozoa (sperms) is known as:

Read the passage carefully and answer the questions based on the passage:
Species diversity on earth is not uniformly distributed. It is generally highest in the tropics and decreases towards the poles. Earth's fossil history reveals the incidences of mass extinctions in the past. Earth's rich biodiversity is vital for the very survival of mankind. It is believed that communities with high diversity tend to be less variable and more productive. The reasons of conserving biodiversity are narrowly utilitarian, broadly utilitarian and ethical. Biodiversity conservation may be in-situ as well as ex-situ.
Which of the following hot spots does not cover India's biodiversity regions?

Identify the primary lymphoid organs, where immature lymphocytes differentiate into antigen sensitive lymphocytes.
(A) Bone marrow
(B) Spleen
(C) Thymus
(D) Appendix
Choose the correct answer from the options given below:

ZIFT stands for:

Read the following paragraph and answer the given questions.
Bio-fertilisers are organisms that enrich the nutrient quality of the soil like cyanobacteria, while there are organisms that help to control plant diseases and pests. The very familiar beetle, the ladybird and dragonflies are useful to get rid of aphids and mosquitoes, respectively. An example of microbial biocontrol agents that can be introduced to control butterfly caterpillars is certain bacteria, which are available in sachets in the form of dry spores. These spores are mixed with water and sprayed onto vulnerable plants. Trichoderma species that are very common in the root ecosystem, are very effective biocontrol agents of several plant pathogens.Baculoviruses attack insects and other arthropods. Usage of these viruses is desirable when an ecological sensitive area is being treated..
A farmer wants to get rid of aphids, but does not want to use insecticide, Choose the best option for him?

The methods employed to introduce recombinant DNA into host cell is/are
A. Micro-injection
B. Ligation
C. Cation treatment and heat shock
D. Gene gun
Choose the correct answer from the options given below:

Reaction of \(C _6 H _5 CH _2 Br\) with aqueous sodium hydroxide follows preferably:

The function \(f(x)=-2 x^3-9 x^2-12 x+5\) is :

Which of the following classes of compounds on hydrolysis yields carboxylic acids?
(A) RCN
(B) \(RCONH_{2}\)
(C) RCOCl
(D) RCOOR'
Choose the \textbf\{correct answer\} from the options given below:

Forest, grassland and desert are examples of :

Read the Passage below and answer the question:
Aldehydes and Ketones, having atleast one methyl group linked to the carbonyl carbon atom (methyl Ketones), are oxidised by sodium hypohalite to sodium salts of corresponding carboxylic acids having one carbon atom less than that of carbonyl compound is converted to haloform. This oxidation does not affect a carbon - carbon double bond, if present in a molecule.
Which of the following statements are true?
A. \(CH_3CHO\) and \(CH_3CH_2CHO\) can be distinguished by Tollen's test.
B. \(CH_3CH_2CHO\) and \(CH_3COCH_3\) can be distinguished by Fehling's test.
C. \(CH_3CHO\) and \(C_6H_5CHO\) can be distinguished by Fehling's test.
D. \(HCHO, CH_3CHO\) can be distinguished by \(NaHCO_3\) test.
E. \(HCOOH, CH_3COOH\) can be distinguished by \(NaHCO_3\) test.
Choose the correct answer from the options given below :

A battery of emf 12 V and internal resistance \(3 \Omega\) is connected to a resistor. If the current in the circuit is 0.8 A, the terminal voltage of the battery, will be