Practice Questions

TLS Online TPP Program

#Question id: 28429

At which stage the primitive streak cells form a third layer that lies between the hypoblast and epiblast cells?

#Unit 5. Developmental Biology

by stage 2 at 12–14 hours after the egg is laid
by stage 3 at 12–14 hours after the egg is laid
by stage 3 at 15–17 hours post laying
by stage 2 at 15–17 hours post laying

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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: 4470

#Unit 3. Fundamental Processes

Most recent experiments suggest that the last of these is at least an important part of the story and that the conformational change causes the elongating complex to stall, with dissociation following more slowly- this conformational change caused by,

TLS Online TPP Program

#Question id: 5316

#Unit 11. Evolution and Behavior

Why is sequencing of eukaryotic genomes more difficult than sequencing genomes of bacteria or archaea?

TLS Online TPP Program

#Question id: 3760

#Unit 3. Fundamental Processes

In E. coli, what is the function of DNA polymerase III?

TLS Online TPP Program

#Question id: 19019

#Unit 9. Diversity of Life Forms

Arrange the following structures, which can be found on male pine trees, from the largest structure to the smallest structure (or from most inclusive to least inclusive).