TLS Online TPP Program

#Question id: 423


The glycolytic pathway oxidizes glucose to two molecules of pyruvate and also produces a net of two molecules of ATP. ATP allosterically inhibits the enzyme, PFK-1, that catalyzes the third step of glycolysis. This is an example of ________.

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. feed-forward activation  

  2. negative cooperativity

  3. feedback inhibition

  4. competitive inhibition

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TLS Online TPP Program

#Question id: 10471

#Unit 6. System Physiology – Plant

Under temperate conditions, which one of the two major factors that are involved with light-dependent stomatal opening are,

TLS Online TPP Program

#Question id: 10470

#Unit 6. System Physiology – Plant

when the environmental stimuli associated with high CO2 demand inside the leaf are transduced into

TLS Online TPP Program

#Question id: 10469

#Unit 6. System Physiology – Plant

When aquatic plants are kept in terrestrial habitat; what adaptations do these plants develop themselves?

TLS Online TPP Program

#Question id: 10468

#Unit 6. System Physiology – Plant

Why are stomata required in leaf surface?

TLS Online TPP Program

#Question id: 10467

#Unit 6. System Physiology – Plant

The COP1-SPA complex acts as a positive regulator as well as acts as negative regulator  by shown in statements;

a) Act as negative regulator−that targets transcription factors for degradation during phytochrome and cryptochrome responses

b) Acts as a positive regulator−that targets transcription factors for degradation during phytochrome and cryptochrome responses

c) Acts as a negative regulator− during UV-B signaling by interacting with the C-terminal region of UVR8 in the nucleus UVR8- COP1-SPA complex then activates the major transcription factor HY5, which controls the expression of many of the genes induced by UV-B

d) Acts as a positive regulator during UV-B signaling by interacting with the C-terminal region of UVR8 in the nucleus UVR8- COP1-SPA complex then activates the major transcription factor HY5, which controls the expression of many of the genes induced by UV-B

Whichof the following combination from avbove statements of UVR8 is true?

TLS Online TPP Program

#Question id: 10466

#Unit 6. System Physiology – Plant

In Arabidopsis, phot1 mutants have a normal avoidance response and a poor accumulation response, phot2 mutants lack the avoidance response but retain a fairly normal accumulation response, while phot1/phot2 double mutant lack both the avoidance and accumulation responses. These results indicate that,