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: 3441

#Unit 11. Evolution and Behavior

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

TLS Online TPP Program

#Question id: 13122

#Unit 2. Cellular Organization

Choose the incorrect?

1- COPI vesicles transport proteins from the rough ER to the cis -Golgi; COPII vesicles transport proteins in the reverse s Direction.

2- The KDEL receptor binds more tightly to its ligand ar low pH, and it is thought that the receptor is able to bind KDEL peptides in the cis-Golgi but to release these peptides in the ER because the pH of the Golgi is slightly lower than that of the ER.

3- The KDEL sorting signal is recognized and bound by the KDEL receptor, a transmembrane protein found primarily on small transport vesicles shuttling between the ER and the cis -Golgi and on the cis-Golgi reticulum.

TLS Online TPP Program

#Question id: 15178

#Unit 2. Cellular Organization

What does Salmonella typhimurium and E. coli synthesize as part of their acidic tolerance response.

TLS Online TPP Program

#Question id: 377

#Unit 1. Molecules and their Interaction Relevant to Biology

The aqueous solution with the highest pH is:

TLS Online TPP Program

#Question id: 26927

#Unit 10. Ecological Principles

Multidimensional hypervolume is proposed by