TLS Online TPP Program

#Question id: 762


Regarding the sugar residues in nucleic acids, which, if any, of the following statements is incorrect?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. The sugar is always based on a heterocyclic ring that consists of one oxygen atom and four carbon atoms, one of which is connected to a fifth carbon atom, the 5’ carbon atom.

  2. The internal sugar residues in a DNA strand normally have free hydroxyl groups, unlike those in an RNA strand.

  3. Bases are covalently linked to the carbon 1’ atoms of the sugars.

  4. Neighboring sugar residues are linked to each other by a phosphodiester bond that connects the 3’ carbon atom on one sugar to the 5’ carbon atom of its neighbour.

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TLS Online TPP Program

#Question id: 11265

#Unit 10. Ecological Principles

Approximately how many kg of carnivore production can be supported by a field plot containing 2000 kg of plant material?

TLS Online TPP Program

#Question id: 11266

#Unit 10. Ecological Principles

Which of the following options lists ecosystems in increasing order of consumption efficiency of herbivore?

TLS Online TPP Program

#Question id: 11267

#Unit 10. Ecological Principles

Two boottle containing phyoplankton in growing stage with oxygen level  20 mg/ml, in which one bottle placed in dark but another bottle placed in light , allowed to measurment of oxygen level is  15 mg/ml in dark bottle, 30 mg/ml in light bottle. Which of the following measure GPP is

TLS Online TPP Program

#Question id: 11268

#Unit 10. Ecological Principles

Consumption efficiency (CE) is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level but Assimilation efficiencies (AE) is the proportion of ingested energy that is assimilated into the bloodstream. Which of the Following statement is correct?

TLS Online TPP Program

#Question id: 11269

#Unit 10. Ecological Principles

Following table represent Loss of energy from ingested food at different process?


What is value of A, B, C and D respectively?

TLS Online TPP Program

#Question id: 11270

#Unit 10. Ecological Principles

Consumption efficiency is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level which of the following is correct statement?

A. Consumption efficiencies of herbivore is higher in ocean than grassland

B. In aquatic ecosystems, production efficiencies of herbivore are greater than carnivores

C. Assimilation efficiencies for carnivores are typically higher than those of herbivores

D. Assimilation efficiency depends on the quality of food eaten and the physiological efficiency of the consumer