Daily NEET MCQ- April 21, 2022 - NEET MCQ

Two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles. High temperature is essential for initiating the fusion reaction. The others are not an essential requirement.

At very high temperatures in the interior of the sun, protons fuse to form helium nuclei, liberating a huge amount of energy. Therefore, the reaction responsible for the production of light energy from the sun is fusion.

The ligands given are chlorine (Cl), carbonyl (CO), carbonate (CO₃) and oxalate (C₂O₄). Of these, the one that occurs last in alphabetic order is oxalate, and hence is will be listed at the end of the coordination entity.

The charge of a coordination entity is written without the presence of the counter ion and is indicated outside the square brackets on the right side as a superscript with the number before the sign of charge.

The terms bis, tris, tetrakis are used when the names of the ligand include a numerical prefix. Else, the prefixes used are mono, di, tri, tetra, etc.

RNAi is a method involving the silencing of specific mRNA due to the binding of complementary dsRNA. It consists of various processes. It acts as a defense mechanism against viruses and transposable elements.

Silencing prevents the translation of the mRNA. It regulates the expression of a gene by preventing its expression. This is used in the RNAi technique. It is a method used for knowing the function of the gene.

RNAi stands for RNA interference. RNAi is a method involving the silencing of specific mRNA due to the binding of complementary dsRNA. In RNAi, the DNA is introduced into a host plant in such a way that it produces both sense and antisense RNA.

The strand having sequence exact same to that of mRNA is called sense strand. The antisense strand consists of a complementary sequence that of transcribed mRNA. Antisense strand serves the template for the transcription, thus sense and antisense RNA are complementary to each other.

The sense and antisense RNA forms ds RNA. The sense strand has sequence same as that of mRNA which codes for a functional protein while the antisense strand consists of complementary nucleotides as that of the sense strand.