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Among 170 students of a class, 155 students participate in one or more of the three classes: Guitar, Drum and Violin. Total 21 students participate on any and only two of three classes. 54 students participate in Drum class only, whereas 43 students participate in Violin class only. 5 students participate in all the three classes. How many students participate in Guitar class only?
Mineral acids are stronger acids than carboxylic acids because (i) Mineral acids are completely ionised. (ii) Carboxylic acids are completely ionised. (iii) Mineral acids are partially ionised. (iv) Carboxylic acids are partially ionised.
Consider the following statements regarding genetic code and choose the correct answer:
1. The genetic code is degenerate
2. In all amino acids the first two bases are the same in all the codons that represent a particular amino acid
3. The number of codons an amino acid can claim is proportional to the frequency of the amino acid in proteins
4. Amino acids with codons ending in U or A also have codons ending in C or G respectively
In a class of 75 students, every student participates in at least one of the three events – music, drama and poetry. 12 students participate in all 3 events. 21 student participate in any two events. If 14 students participate in music only and 15 students participate in drama only, then how many students participate in poetry only? 
In a class of 120 students, 100 students participate in either Golf or Skating or both. Among them, total 60 students participate in Golf. A total of 56 students participate in Skating. How many students participate only in Skating?
In a batch of 68 students, 23 students do not participate in any of the two games i.e. cricket and squash, 17 students participate in cricket only, 24 students participate in cricket and squash. How many students participate in squash only?
The common amino acids are also called as alpha-amino acids because they contain their amino group attached to the alpha carbon.
Name the amino acid which does not take part in transamination during amino acid catabolism.
Transamination reaction in amino acid synthesis is catalyzed by enzyme_________
For the reaction, A = X + Y, the respective concentrations are CA, CX and CY. The forward reaction rate constant is kf and the backward reaction rate constant is kb. Choose the correct statement from the following:
P. At equilibrium, kf CA > kB CxCy
Q. If the reaction is irreversible than, kb CXCY = 0
R. The backward reaction rate will essentially be first order, if the forward reaction rate is first order.
S. Activation energy for the first order forward reaction will be independent of temperature.