Inactive protoxins is converted into its active toxin by:

Who gave the 'chromosomal theory of inheritance'?

Select the correct sequence for transport of sperm in the male reproductive
system.
(A) Urethra
(B) Urethra meatus
(C) Ejaculatory duct
(D) Vas deferens
Choose the correct answer from the options given below:

Which disease is not the sexually transmitted infection?

Identify the statements which are incorrect with respect to ribosomes
(A) Ribosome translates the mRNA from its 3' to 5' end.
(B) In its inactive state, ribosome exists as two separate subunits.
(C) The mRNA moves between the two subunits of ribosomes during protein synthesis.
(D) Ribosome consists of messenger RNA and 70 different proteins.
Choose the incorrect answer from the options given below:

Arrange the given stages of menstrual cycle in correct sequence.
(A) Luteal phase
(B) Follicular phase
(C) Menstruation
(D) Next cycle begins
Choose the correct answer from the options given below:

Which one of the mentioned reasons does not cause the loss of biodiversity?

From the below-mentioned graph of shaded feasible region of a linear programming problem (LPP) with objective function
\(z=1.50 x+1.00 y\), the maximum value of \(z\) will be;-

Select incorrect statements in reference to decomposition.
A. Decomposition rate is slower, if detritus is rich in nitrogen
B. Decomposition is largely an oxygen requiring process
C. Decomposition rate is faster if detritus is rich in lignin and chitin
D. Warm and moist environment favours decomposition
Choose the correct answer from the options given below:

Match List I with List II.

LIST I	LIST II
A. Lactic acid bacteria	I. Saccharomyces cerevisiae
B. Ethanol	II. Propionibacterium sharmanii
C. Swiss Cheese	III. Lactobacillus
D. Penicillin	IV. Penicillium notatum

Choose the correct answer from the options given below:

Completion of the first meiotic division of the primary oocytes takes place -

Equation of a line is \(\frac{x-3}{2}=\frac{4-y}{3}=\frac{2-z}{4}\) then its direction cosines are:

Answer the question on the basis of passage given below :
One of the notable features of the transition element is the great variety of oxidation states it may show in its compounds. The elements which give the greatest number of oxidation states occur in or near the middle of the series. Manganese, for example exhibits all the oxidation states from +2 to +7. The lesser number of oxidation states at the extreme ends is either due to losing or sharing of few electrons (Sc, Ti) or too many d electrons of higher valence. Early in the first series scandium (II) is virtually unknown and titanium (IV) which is more stable than Ti (III) or Ti (II). On the other end, the only oxidation state of zinc is \(+ 2\).
Cris reducing but Mn is oxidising in nature although both have \(d ^{ 1 }\) configuration. It is due to the reason that Cr configuration changes from