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TLS Online TPP Program

#Question id: 18802

Instead of Propidium iodide-labeled cell an alternate compound can be used which is Carboxyfluorescein succinimidyl ester (CFSE) in CFSE labeling amount of fluorescence emitted is cut in half each time the cell divides. The nature of this compound is

#Unit 13. Methods in Biology
  1. non-toxic to cells hence retained till many cycles
  2. toxic to cells hence retained till many cycles
  3. non-toxic to cells hence retained only at single cycles
  4. toxic to cells hence retained only in single cycles
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TLS Online TPP Program

#Question id: 24445

#Unit 13. Methods in Biology

An electrocardiogram is a painless, noninvasive way to help diagnose many common heart problems. Which of the following would not diagnose by ECG?
TLS Online TPP Program

#Question id: 1322

#Unit 4. Cell Communication and Cell Signaling

Adherens junctions are specialized cell junctions that form by linking the …………to transmembrane proteins known as ……………..
TLS Online TPP Program

#Question id: 24524

#Unit 11. Evolution and Behavior

Which of the following is defined as any consistent difference in fitness among phenotypically different classes of biological entities?
TLS Online TPP Program

#Question id: 28242

#Unit 5. Developmental Biology

 which types of Intracellular regulatory mechanisms that involve to regulate stem cell behavior occurs at the level of chromatin?
TLS Online TPP Program

#Question id: 5633

#Unit 5. Developmental Biology

During slow block to polyspermy, the components of the cortical granules bind to the _______ to form a fertilization envelope.