Practice Questions

TLS Online TPP Program

#Question id: 10463

LOV1 and LOV2, each binding a chromophore flavin mononucleotide (FMN), which one of the following statements shows incorrect prediction about LOV domains?

#Unit 6. System Physiology – Plant

Upon blue-light illumination, the FMN molecule becomes covalently bound to a cysteine residue in the phototropin molecule, forming a cysteine-flavin covalent adduct
Phototropin contains two light-sensing LOV domains, the LOV1 domain is primarily responsible for kinase activation in response to blue light
The three-dimensional structure of the LOV2 domain resembles a closed molecular hand holding the FMN tightly by noncovalent interactions inside its core
In the dark, one FMN molecule is noncovalently bound to each LOV domain

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TLS Online TPP Program

#Question id: 543

#Unit 1. Molecules and their Interaction Relevant to Biology

If glucose labeled with 14C at C^-1 (the aldehyde carbon) were metabolized in the liver, the first radioactive pyruvate formed would be labeled in:

TLS Online TPP Program

#Question id: 17668

#Unit 9. Diversity of Life Forms

The most recent common ancestor of all land plants was probably similar to modern-day members of which group?

TLS Online TPP Program

#Question id: 23257

#Unit 13. Methods in Biology

Centromeric probes are useful in identifying

TLS Online TPP Program

#Question id: 2534

#Unit 2. Cellular Organization

How the matrix polysaccharides are differ from the cellulose?

TLS Online TPP Program

#Question id: 24238

#Unit 4. Cell Communication and Cell Signaling

Which of the following does not exist as the major class of ECM molecules?