Practice Questions

TLS Online TPP Program

#Question id: 22949

How CONSTANS gene and its encoded protein involved in translating day length into a signal that converts a vegetative shoot meristem into a floral meristem?

#Unit 5. Developmental Biology

CONSTANS protein is degraded in the dark, but accumulates in the leaves as the days get longer.
CONSTANS protein is degraded in the light, and so accumulates in the leaves as the days get shorter.
Peak expression of CONSTANS occurs at mid-morning.
The CONSTANS gene regulates the circadian clock.

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TLS Online TPP Program

#Question id: 743

#Unit 1. Molecules and their Interaction Relevant to Biology

Glycophorin, an integral membrane protein, has a single transmembrane alpha helix. Which of the following idealized hydropathy plots most likely represents the transmembrane nature of glycophorin?

TLS Online TPP Program

#Question id: 19697

#Unit 13. Methods in Biology

How to record through limb lead II in ECG?

TLS Online TPP Program

#Question id: 11197

#Unit 7. System Physiology – Animal

After the depolarization phase of an action potential, the resting potential is restored by ________.

TLS Online TPP Program

#Question id: 3441

#Unit 11. Evolution and Behavior

Animals tend to maximize their energy intake-to-expenditure ratio. What is this behavior called?