Practice Questions

TLS Online TPP Program

#Question id: 10206

The excess energy is absorbed by three carotenoids molecules such as violaxanthin, antheraxanthin, and zeaxanthin, which of the following statements correct about these molecules?

#Unit 6. System Physiology – Plant

Both of the aromatic rings of violaxanthin have a bound oxygen atom while antheraxanthin only one of the two rings has a bound oxygen and in zeaxanthin neither does
Zeaxanthin is the least effective of the three xanthophylls molecules in heat dissipation
the level of zeaxanthin remains relatively constant throughout the day
the antheraxanthin content increases at high PPFD and decreases at low PPFD

More Questions

TLS Online TPP Program

#Question id: 24521

#Unit 11. Evolution and Behavior

Adaptation is involved in

b. Genetic drift

c. Origin of new species

TLS Online TPP Program

#Question id: 15414

#Unit 5. Developmental Biology

Which of the following transcription factor activated by BMP4 & FGF8 respectively?

TLS Online TPP Program

#Question id: 5135

#Unit 5. Developmental Biology

In xenopus, result of tissue transplantation during early and late gastrulae

(A) Cells of early newt gastrula exhibit conditional development.

(B) Cells of early newt gastrula exhibit autonomous development

(C) Cells of late newt gastrula exhibit conditional development.

(D) Cells of late gastrula exhibit autonomous development.

The correct inferences are:

TLS Online TPP Program

#Question id: 18772

#Unit 13. Methods in Biology

Strength of Antigen-Antibody Interactions are primarily decided by

TLS Online TPP Program

#Question id: 4152

#Unit 3. Fundamental Processes

The pathway for polypeptides exported from E. coli includes the following steps, which occur in what order for correct export?

1. A chaperone, SecA, binds to the polypeptide.

2. A chaperone, SecB, binds to the polypeptide.

3. ATP is hydrolyzed by Sec A.

4. SecA pushes 20 amino acids of the polypeptide into the translocation complex.