Practice Questions

TLS Online TPP Program

#Question id: 14829

A new drug is developed that inhibits formation of the flagellar filament by impairing production of the protein flagellin. Is this going to be a good drug?

#Unit 2. Cellular Organization

Potentially-it would definitely only impair bacteria, but wouldn't matter for the ones that don't use a flagellum to move around.
Potentially-if it could be shown that it also didn't impair the production of the eukaryotic flagellum.
No-our eukaryotic cells depend on flagella to move around in our body, and this would impair that function.
No-bacterial flagella are produced using microtubules, not the protein flagellin. This drug would be useless in eliminating bacteria.

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TLS Online TPP Program

#Question id: 4163

#Unit 3. Fundamental Processes

The net effect of all amino acid tRNA synthetases binding to a tRNA is to position the __ of tRNA in the active site.

TLS Online TPP Program

#Question id: 3329

#Unit 11. Evolution and Behavior

The following genotypes of one locus in population are given - Genotype ( Number)

AA (120) AB ( 30) BB (50) CC (300)

AC (400) BC (100)

Which of the following is the correct frequency of C allele and A allele respectively?

TLS Online TPP Program

#Question id: 1720

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is TRUE of lymphocytes?

TLS Online TPP Program

#Question id: 31331

#Unit 7. System Physiology – Animal

Which of the following has the greatest effect on the ability of blood to transport oxygen?

TLS Online TPP Program

#Question id: 28501

#Unit 5. Developmental Biology

Which paralogues Hox gene specify the zeugopod during limb development?