Signals of parturition originate from which of the following?
A. Human Placental Lactogen
B. Parturition hormone
C. Fully developed foetus
D. Placenta
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Bacillus thuringiensis produces proteins (Bt toxin) that kill certain insects.
Identify the correct statements.
(A) Bt toxin protein exists as an inactive form (protoxin) in Bacillus
thuringiensis.
(B) Bt toxin protein exists as an active form toxin in the insect gut.
(C) The alkaline pH of the gut of an insect solubilize the toxin and converts
in an inactive form.
(D) The toxin is coded by a gene crylac named cry.
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When a species become extinct, the plant and animal species associated with it in an obligatory way also become extinct. This is known as-

Read the following paragraph and answer the given questions.
RNAi takes place in all eukaryotic organisms as a method of cellular defense. The source of this complementary RNA could be from an infection by viruses having RNA genomes or mobile genetic elements (transposons) that replicate via an RNA intermediate. Insulin from an animal source, though caused some patients to develop allergy or other types of reactions to the foreign protein. Insulin consists of two short polypeptide chains: chain A and chain B, that are linked together by disulphide bridges. Transgenic mice are being developed for use in testing the safety of vaccines before they are used on humans. Transgenic mice are being used to test the safety of the polio vaccine. If successful and found to be reliable, they could replace the use of monkeys to test the safety of batches of the vaccine. Specific Bt toxin genes were isolated from Bacillusthuringiensis} and incorporated into the several crop plants such as cotton. The choice of genes depends upon the crop and the targeted pest, as most Bt toxins are insect-group specific. The toxin is coded by a gene cryIAc named cry. There are a number of them, for example, the proteins encoded by the genes cryIAc and cryIIAb control the cotton bollworms, that of cryIAb controls corn borer.

The transgenic mice are being used to test the safety of which vaccine?

Arrange the following structures involved in embryogenesis in the correct
sequence.
(A) Zygote
(B) Blastocyst
(C) Blastomeres
(D) Morula
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Which of the following is a start codon?

Match List I with List II

List - I	List - II
(A) Convergent evolution	(I) Speciation
(B) Divergent evolution	(II) Analogous organs
(C) Adaptive radiation	(III) Homologous organs
(D) Natural selection	(IV) Australian marsupials

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Intermolecular hydrogen bonding is observed between chloroform and acetone.
Therefore, their binary solution will_
(A) Show positive deviation from Raoult's law
(B) Show negative deviation from Raoult's law
(C) Obey Raoult's law
(D) Show decrease in vapor pressure
Choose the correct answer from the options given below:

Chemisorption has the following traits:
A. High enthalpy of adsorption
B. Reversible
C. Favoured by high temperature
D. Requires low activation enthalpy
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Given differential equation,
\(\left(1+y^2\right) d x=\left(\tan ^{-1} y-x\right) d y\)
then which of the following is/are true?
(A) Integrating factor \(=\tan ^{-1} x\)
(B) Integrating factor \(=\tan ^{-1} y\)
(C) Integrating factor \(=e^{\tan ^{-1} y}\)
(D) Degree \(=1\)
Choose the correct answer from the options given below :

Match List-l with List-II

List-I(Name of Amino Acid)	List-II(One letter code)
(A) Phenylalanine	(I) F
(B) Tyrosine	(II) Y
(C) Asparagine	(III) N
(D) Arginine	(IV) R

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The steam distillation method is used for the separation of 1 : 1 mixture of p-nitrophenol and o-nitrophenols because

If \(y=\sin ^{-1} x+\sin ^{-1} \sqrt{1-x^2}, x \in(-1,0)\), then \(\frac{d y}{d x}\) is equal to