Food chains are sometimes short because -triyambak.org

Practice Questions

TLS Online TPP Program

#Question id: 12287

#Unit 10. Ecological Principles

Only a single species of herbivore feeds on each plant species.
Local extinction of a species causes extinction of the other species in its food chain
Most of the energy in a trophic level is lost as it passes to the next higher level.
Predator species tend to be less diverse and less abundant than prey species.

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#Question id: 26474

#Unit 3. Fundamental Processes

#Question id: 26475

#Unit 3. Fundamental Processes

If the nonsense mutation in one gene of a transcription unit it leads to the premature termination of transcription the phenomenon known as

#Question id: 26476

#Unit 3. Fundamental Processes

Column 1	Column 2
1. Repressors bind to specific sites on the DNA. In bacterial cells, such binding sites, called	a. effector
2. Regulation by means of a repressor protein that blocks transcription is referred to as	b. positive regulation
3. Activators bind to DNA and enhance the activity of RNA polymerase at a promoter; this is	c. negative regulation
4. Repressor binding to DNA is regulated by a molecular signal called	d. operators

#Question id: 26485

#Unit 3. Fundamental Processes

#Question id: 26486

#Unit 3. Fundamental Processes

Which of the following is responsible to increase the rate of open promoter complex formation by enhancing the k2

#Question id: 26487

#Unit 3. Fundamental Processes

CAP–cAMP binds upstream to promoters DNA and target bends the DNA considerably about