TLS Online TPP Program

#Question id: 561


Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

#Biochemistry
  1. a Glu residue on the enzyme is involved in the reaction.

  2. a His residue on the enzyme is involved in the reaction.

  3. the enzyme has a metallic cofactor.

  4. the enzyme is found in gastric secretions

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TLS Online TPP Program

#Question id: 23146

#Applied Microbiology

A phenomenon of absorption of light at a certain wavelength and then emission at longer wavelength is known as

TLS Online TPP Program

#Question id: 23147

#Zoology

In fluorescence microscopy why the fluorescence occurs at longer wavelength when there shorter   wavelength of light is applied?

TLS Online TPP Program

#Question id: 23147

#Life Sciences

In fluorescence microscopy why the fluorescence occurs at longer wavelength when there shorter   wavelength of light is applied?

TLS Online TPP Program

#Question id: 23147

#Applied Microbiology

In fluorescence microscopy why the fluorescence occurs at longer wavelength when there shorter   wavelength of light is applied?

TLS Online TPP Program

#Question id: 23148

#Zoology

There are two proteins A and B to be visualized under fluorescence microscopy. Both of them are excited with same wavelength of light but A emits longer wavelength. Hence we can conclude that 
1. A is denser molecule than B
2. B is denser molecule than A
3. A is lighter molecule than B
4. B is lighter molecule than A
Which of the following option is incorrect?

TLS Online TPP Program

#Question id: 23148

#Life Sciences

There are two proteins A and B to be visualized under fluorescence microscopy. Both of them are excited with same wavelength of light but A emits longer wavelength. Hence we can conclude that 
1. A is denser molecule than B
2. B is denser molecule than A
3. A is lighter molecule than B
4. B is lighter molecule than A
Which of the following option is incorrect?