Practice Questions

TLS Online TPP Program

#Question id: 14110

Which among the following statements is incorrect about ENTREZ ?

#SCPH05 I Biotechnology

Entrez is a biological database retrieval system.
It has a number of forms to fill out in order to get a Medline reference for a molecular biology sequence database.
It allows text-based searches for a wide variety of data, including annotated genetic sequence information, structural information, as well as citations and abstracts, full papers, and taxonomic data.
It's a resource created by the European bioinformatics institute (EBI).

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TLS Online TPP Program

#Question id: 19460

#SCPH01 Biochemistry

In phase contrast unobstructed light passes through a region of________ that both transmits only a small percentage of the light and changes its phase slightly.

TLS Online TPP Program

#Question id: 19461

#SCPH01 Biochemistry

Phase-contrast microscopy is suitable for observing which kind of sample?

1. Single cells

2. Group of cells

3. Thin cell layers

4. Thick cell layers

Which of the following options is correct?

TLS Online TPP Program

#Question id: 19462

#SCPH01 Biochemistry

Splitting of incident light and then recombining them to observe interference pattern occurs in which type of microscopy?

TLS Online TPP Program

#Question id: 19463

#SCPH01 Biochemistry

DIC microscopy is used for visualizing

1. Minute details

2. Thick objects

3. Thin objects

4. Larger details

Which among the following options is correct?

TLS Online TPP Program

#Question id: 19464

#SCPH01 Biochemistry

Which is the common fixative agent that crosslinks amino groups on adjacent molecules

TLS Online TPP Program

#Question id: 19465

#SCPH01 Biochemistry

In microscopy histological samples are often stained with which basic dye