Practice Questions

TLS Online TPP Program

#Question id: 40373

Identify the INCORRECT statement regarding the structure of DNA and nucleosomes.

#Botany

The pitch of the B-DNA helix is approximately 3.4 nm per turn.
Histone octamer consists of two copies each of H1, H2A, H2B, and H3.
Adenine pairs with Thymine via two hydrogen bonds, while Guanine pairs with Cytosine via three.
Euchromatin is loosely packed, transcriptionally active chromatin.

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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?

TLS Online TPP Program

#Question id: 23156

#Zoology

Most widely used method of detecting specific proteins, uses an antibody to which a fluorescent dye has been covalently attached

TLS Online TPP Program

#Question id: 23156

#Life Sciences

Most widely used method of detecting specific proteins, uses an antibody to which a fluorescent dye has been covalently attached

TLS Online TPP Program

#Question id: 23156

#Applied Microbiology

Most widely used method of detecting specific proteins, uses an antibody to which a fluorescent dye has been covalently attached

TLS Online TPP Program

#Question id: 23157

#Zoology

Immunofluorescence microscopy, the most widely used method of detecting