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TLS Online TPP Program

#Question id: 4232

Once researchers identified DNA as the molecule responsible for transmitting heritable traits, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. Which of the following statements correctly describes the mechanism of information transfer in eukaryotes that accomplishes this task?

#Unit 3. Fundamental Processes

  1. DNA from a single gene is replicated and transferred to the cytoplasm, where it serves as a template for protein synthesis.

  2. Messenger RNA is transcribed from a single gene and transfers information from the DNA in the nucleus to the cytoplasm, where protein synthesis takes place.

  3. Histone proteins in the chromosomes transfer information from the nucleus to the ribosome, where protein synthesis takes place.

  4. Transfer RNA takes information from DNA directly to a ribosome, where protein synthesis takes place.

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TLS Online TPP Program

#Question id: 11286

#Unit 10. Ecological Principles

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
TLS Online TPP Program

#Question id: 11287

#Unit 10. Ecological Principles

What is value of evenness in community 3 and 4 respectively?


TLS Online TPP Program

#Question id: 11288

#Unit 10. Ecological Principles

Below is a table showing the number of species and actual food web links observed in three different ecosystems. By calculating connectance as a measure of relative complexity of food webs, which of the following ecosystem are more complex? 
TLS Online TPP Program

#Question id: 11289

#Unit 10. Ecological Principles

Consumption efficiency (CE) is the proportion of production at one trophic level (Prodn n-1) that is eaten by, or ingested, by the next trophic level (In) but Assimilation efficiency (AE) is the proportion of ingested energy assimilated in to blood stream

Which of the following is incorrect statement?

A) In terrestrial herbivore, AE is greater than CE

B) In aquatic herbivore AE is equal to CE 

C) CE of grass land herbivore is often greater than forest herbivore

D) AE of herbivore is often greater than carnivore
TLS Online TPP Program

#Question id: 11290

#Unit 10. Ecological Principles

Which of the following statement are incorrect?
TLS Online TPP Program

#Question id: 11291

#Unit 10. Ecological Principles

A small lake has three trophic levels- phytoplankton (autotrophs), Zooplankton (herbivore) and planktivorous fish (primary carnivore). In this lake, addition of nutrients is allowed to study the 'bottom up' effects". What is the expected biomass of phytoplankton and zooplankton tropic levels?