TLS Online TPP Program

#Question id: 787


Which of the following statement is INCORRECT with respect to the structure of DNA?

#Part-B Specialized Branches in Biotechnology
  1. Six adenosines in a row in a DNA helix produce a bend of about 18 degrees.

  2. DNA was first isolated and characterized by Friedrich Miescher who called the phosphorus-containing substance “nuclein.”

  3. It is the pentoses that define the identity of a nucleic acid not the nitrogenous bases.

  4. The Z-DNA tracts do not play any role in regulating the expression of some genes or in genetic recombination.

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TLS Online TPP Program

#Question id: 11283

#Part-B Specialized Branches in Biotechnology

Herbivore ingests plant material with 1000 k j energy form producer and assimilated only 200 k J energy in their blood stream; additionally herbivore invests 120 k j energy in their maintenance. What is production efficiency of that herbivore?

TLS Online TPP Program

#Question id: 11284

#Part-B Specialized Branches in Biotechnology

Which of the following could qualify as a top-down control on a grassland community?

TLS Online TPP Program

#Question id: 11284

#Part-B Specialized Branches in Biotechnology

Which of the following could qualify as a top-down control on a grassland community?

TLS Online TPP Program

#Question id: 11285

#Part-B Specialized Branches in Biotechnology

Terrestrial herbivores are animals that eat only plants and their digestive systems contain microbes that aid in the digestion of cellulose, Carnivores eat primarily animal flesh or fluids. Which of the following is correct is correct statement?

TLS Online TPP Program

#Question id: 11285

#Part-B Specialized Branches in Biotechnology

Terrestrial herbivores are animals that eat only plants and their digestive systems contain microbes that aid in the digestion of cellulose, Carnivores eat primarily animal flesh or fluids. Which of the following is correct is correct statement?

TLS Online TPP Program

#Question id: 11286

#Part-B Specialized Branches in Biotechnology

Consumption, assimilation, and production efficiencies are measures of ecological efficiency. Following some statements are correct?

(A) Consumption efficiencies for carnivores are typically higher than those of herbivores

(B) Assimilation efficiencies of herbivore are often less than consumption efficiencies

(C) Vertebrates tend to have lower production efficiencies than invertebrates