Practice Questions

TLS Online TPP Program

#Question id: 9261

Which of the following statements about horizontal gene transfer is accurate?

#Unit 9. Diversity of Life Forms

Horizontal gene transfer was quite common in the early stages of evolution of life on Earth.
Horizontal gene transfer among organisms does not occur today.
Horizontal gene transfer moves only genes that play a role in metabolism.
Horizontal gene transfer occurs only among closely related organisms.

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TLS Online TPP Program

#Question id: 23153

#Unit 13. Methods in Biology

SNARF-1is a fluorescent dye used to measure which ion concentration?

TLS Online TPP Program

#Question id: 23154

#Unit 13. Methods in Biology

When the organelles pH is acidic the how the SNARF-1 dye measures this acidity?

TLS Online TPP Program

#Question id: 23155

#Unit 13. Methods in Biology

Match the following ions in column I with their relevant dyes column II.

Column I Column II

1. K+ a. Fura-2

2. Ca2+ b. SNARF-1

3. H+ c. Ion potassium green

Which of the following options is correct?

TLS Online TPP Program

#Question id: 23156

#Unit 13. Methods in Biology

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

#Unit 13. Methods in Biology

Immunofluorescence microscopy, the most widely used method of detecting

TLS Online TPP Program

#Question id: 23158

#Unit 13. Methods in Biology

You have purified protein X and injected into an animal so that over a period of weeks, the animal will mount an immune response and make antibodies to protein X. By which technique these generated antibodies can be extracted from blood serum.