NEET Test 181

ΔG = ΔH − TΔS, 

Since, ΔG= positive at T = 273 K and ΔH = positive 

And at high temperature 373 K, it becomes spontaneous (ΔG = negative even if ΔH =  positive. 

This is possible only, if ΔS = positive because at high temperature T.ΔS > ΔH to give ΔG = negative.

Traditional hybridization procedures used in plant and animal breeding, very often lead to the inclusion and multiplication of undesirable genes along with the desired genes.

Interkinesis is brief intra meiotic interphase, which is found in some cases in order to synthesize deficient biochemicals. DNA synthesis does not occur in this phase of the cell cycle.

Ribosomes are very fine particles located in the cell fluid of a living cell, which have an important role in the synthesis of proteins. These convert the signals of genetic substances (DNA or RNA) into protein chains. They are found on the upper surface of the endoplasmic reticulum, in addition they are also found in mitochondria and chloroplasts. The composition of ribosomes is about 60 RNA and 40 protein by weight.

An exchange of chromosome segments between non-sister homologous chromatids occurs and is called crossing-over. The crossover events are the first source of genetic variation produced by meiosis. The result is an exchange of genetic material between homologous chromosomes.

3-hydroxybutanoic acid and 3-hydroxypentanoic acid are the monomer unit of PHBV (poly-β-hydroxybutyrate-co-β-hydroxyvalerate).

PHBV is biodegradable polymer and can be degraded by microorganisms within a suitable period.

The major source of Nitrous oxide and Sulphur Oxide pollution are power plants, Fossil fuel burning, Lightning, Industrial smoke, Chemical and Fertiliser Industries Volcanoes, Seas and Oceans, Decomposition of organic matter and vehicles.

N₂O₃,NO₂ and N₂O₅ are acidic in nature, and when they react with water, they produce acids like HNO₃ (Nitric Acid) and HNO₂ (Nitrous Acid) which causes acid rain.

CO and CO₂ react with rainwater to form weak Carbonic Acid. Thus generally rainwater is naturally slightly acidic.

The translation is the process of gene expression and protein synthesis that occurs in the cytosol.

The cell organelles involved are the ribosome. During transcription, a messenger RNA is formed. This messenger RNA is decoded by the ribosome to form a polypeptide made of amino acids. Some important compounds involved in protein synthesis are ribosome, messenger RNA and transfer RNA.