Match List - I with List - II.

List - I	List - II
(A) Sexually transmitted disease	(I) Assisted reproductive technology
(B) Intra-uterine devices	(II) Detection of genetic disorder
(C) In-vitro fertilization	(III) Contraception method
(D) Amniocentesis	(IV) AIDS

Choose the correct answer from the options given below :

Nucleosome is associated with__________ molecules of histones.

ZIFT is an assisted reproductive technique in which:

Which one of the given groups of structures are haploid?

The initial idea of triplet nature of codon was proposed by:

GnRH is secreted by:

Which of the following statements are incorrect?
(A) Fragments of DNA can be separated by ELISA.
(B) Transformation is a procedure through which a piece of DNA is introduced in a host bacterium.
(C) Recombinant DNA technology does not involve isolation of a desired DNA fragment.
(D) DNA ligases are used for stitching DNA fragments into a vector.
Choose the correct answer from the options given below:

Read the following passage carefully and answer the given questions
The earthworm is referred to as the farmer's friend. This is because they help in the breakdown of complex organic matter as well as in loosening of soil. Similarly, decomposers break down complex organic matter into inorganic substances like carbon dioxide, water and nutrients and the process is called decomposition. Dead plant remains such as leaves, bark, flowers and dead remains of animals, including fecal matter, constitute detritus, which is the raw material for decomposition. Some of the steps in the process of decomposition are fragmentation, catabolism, leaching, humification etc.
The process of decomposition largely requires -

Which of the following is a barrier method of contraception?

The puffed up appearance of dough is due to the production of:

Which one of the following is not the invasive alien species?

Converting \(\text{[A]}\) into \(\text{[C]}\) is called :

Question based on following passage :
Adsorption is the process of attracting and retaining the adsorbate molecules on the surface of adsorbent. It is of two types i.e. Physisrption and chemisorption. To increase the rate of reaction, the substance called 'catalyst' is added. Promotors enhance the activity of catalyst while poison decrease the catalyst activity. Solutions may be true solution, suspension and colloids. Colloids are heterogenous but quite stable. On the basis of nature of interaction, colloids may be Lyophilic or Lyophobic. On the basis of type of dispersed phase particles, there may be multimolecular colloids, macromlecular colloids and associated colloids. The congulation of colloids may be done by boiling, dialysis or by mixing oppositely charged sols.
The substances which behave as normal electrolyte at low concentration but become colloids at higher concentration, are known as :