Practice Questions

TLS Online TPP Program

#Question id: 2594

During mitosis, the breakdown of the nuclear envelope depends on the disassembly of lamin filaments that form a meshwork supporting the membrane. How is that breakdown accomplished?

#Unit 2. Cellular Organization

Phosphorylation of nuclear lamins by a cyclin-dependent kinase active in early mitosis induces their disassembly.
Dephosphorylation of nuclear lamins by a cyclin-dependent kinase active in early mitosis induces their disassembly.
Dephosphorylation of nuclear lamins by a cdc14 active in early mitosis induces their disassembly.
Phosphorylation of nuclear lamins by a CAK kinase active in early mitosis induces their disassembly.

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TLS Online TPP Program

#Question id: 23152

#Unit 13. Methods in Biology

A fluorescent dye SNARF-1 that is sensitive to H+ concentrations can be used to monitor the cytosolic pH of

1. Alkaline cells

2. Acidic cells

Which of the following options are incorrect?

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