TLS Online TPP Program

#Question id: 40158


Q. Identify the correct statements regarding the structure of DNA:
(A). The two chains have anti-parallel polarity 
(B). The backbone is constituted by sugar-phosphate 
(C). Adenine pairs with Thymine through three hydrogen bonds 
(D). The pitch of the helix is 3.4 nm
Choose the correct answer from the options given below:

#Botany
  1.  (A), (B) and (D) only
  2.  (A), (B) and (C) only
  3. (B), (C) and (D) only
  4.  (A), (B), (C) and (D)

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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?

TLS Online TPP Program

#Question id: 23148

#Applied Microbiology

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?