Match List I with List - II. -

List - l	List - II
(A) Colostrum	(l) T-lymphocyte
(B) Histamine	(II) Preformed antibodies
(C) Passive immunisation	(III) Yellowish fluid
(D) Cell-mediated immunity	(IV) Mast cell

Choose the correct answer from the options given below :

Match List-l with List-ll

List-l (Terms)	List-ll (Features)
(A). Humus	(I). Photosynthetically active radiation
(B). PAR	(II). Biomass at a particular time
(C). Trophic level	(III). Dark-colored amorphous substance
(D). Standing crop	(IV). Nutrition based-specific place in the food chain

Choose the correct answer from the options given below:

Darwin's finches of Galapagos Islands are the examples of:

The first instance of construction of an artificial recombinant DNA molecule was carried out on the plasmid of:

The biodiversity is ______ at lower altitudes and ______ with increasing higher latitudes.

Read the passage carefully. Attempt the questions.
An overwhelming majority (99 per cent) of animals and nearly all plants cannot maintain a constant internal environment. Their body temperature changes with the ambient temperature. In aquatic animals, the osmotic concentration of the body fluids change with that of the ambient air and water osmotic concentration. These animals and plants are simply conformers. Considering the benefits of a constant internal environment to the organism, we must ask why these conformers had not evolved to become regulators. Recall the human analogy we used above; much as they like, how many people can really afford an air conditioner? Many simply 'sweat it out' and resign themselves to suboptimal performance in hot summer months. Very small animals are rarely found in polar regions. During the course of evolution, the costs and benefits of maintainin a constant internal environment are taken into consideration. Some species have evolved the ability to regulate, but only over a limited range of environmental conditions, beyond which they simply conform.
If the stressful external conditions are localised or remain only for a short duration, the organism has five other alternatives for survival.
Identify the animal which is NOT a conformer.

In RNAi, the genes are silenced by the formation of:

Read the following paragraph and answer the given questions.
Repeated amplification is achieved by the use of a thermostable DNA polymerase (isolated from a bacterium, Thermusaquaticus}), which remain active during the high temperature induced denaturation of double stranded DNA. The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide followed by exposure to UV radiation. The separated bands of DNA are cut out from the agarose gel and extracted from the gel piece. The convention for naming these enzymes is the first letter of the name comes from the genus and the second two letters come from the species of the prokaryotic cell from which they were isolated, e.g., EcoRI comes from Escherichiacoli} RY 13. In EcoRI, the letter 'R' is derived from the name of strain. Roman numbers following the names indicate the order in which the enzymes were isolated from that strain of bacteria. Stanley Cohen and Herbert Boyer accomplished this in 1972 by isolating the antibiotic resistance gene by cutting out a piece of DNA from a plasmid which was responsible for conferring antibiotic resistance. Since the DNA is enclosed within the membranes, we have to break the cell open to release DNA, RNA, protein, polysaccharides etc. The RNA can be removed by treatment with ribonuclease whereas proteins can be removed by treatment with protease. Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.

The convention for naming restriction enzymes is:

Which of the following reactions are disproportionation reactions?
(A) \(2\text{Cu}^+ \rightarrow \text{Cu}^{2+} + \text{Cu}\)
(B) \(3\text{MnO}_4^{2-} + 4\text{H}^+ \rightarrow 2\text{MnO}_4^- + \text{MnO}_2 + 2\text{H}_2\text{O}\)
(C) \(2\text{KMnO}_4 \rightarrow \text{K}_2\text{MnO}_4 + \text{MnO}_2 + \text{O}_2\)
(D) \(2\text{MnO}_4^- + 3\text{Mn}^{2+} + 2\text{H}_2\text{O} \rightarrow 5\text{MnO}_2 + 4\text{H}^+\)
Choose the correct answer from the options given below:"

For a chemical reaction with a rise in temperature by \(10^{\circ} C\), the rate constant becomes nearly

The solution of the differential equation \(\log _e\left(\frac{d y}{d x}\right)=5 x+2 y\) is given by

The magnitude of electric force exerted by a proton on an electron in a hydrogen atom is, (Given distance of separation between charges, 1 \( \text{\AA} \))

If \(A=\left[\begin{array}{ccc}2 & -2 & 1 \\ 0 & 4 & 2\end{array}\right]\) and \(B=\left[\begin{array}{ccc}1 & -2 & 7 \\ 2 & 0 & 6\end{array}\right]\) are two matrices such that 3A - 2B + 4C = O, then matrix C is equal to: