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TLS Online TPP Program

#Question id: 12570

Extinction is a natural phenomenon. It is estimated that 99% of all species that ever lived are now extinct. Why then do we say that we are now in a biodiversity crisis?

#Unit 10. Ecological Principles
  1. Humans are ethically responsible for protecting endangered species.
  2. Scientists have finally identified most of the species on earth and are thus able to Quantify the number of species becoming extinct.
  3. The current rate of extinction is high and human activities threaten biodiversity at all levels.
  4. Humans  have  greater  medical  needs  than  at  any  other  time  in  history,  and  many  potential  medicinal compounds are being lost as plant species become extinct.
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TLS Online TPP Program

#Question id: 12567

#Unit 10. Ecological Principles

Which of the following is true about the current research about forest fragmentation?
TLS Online TPP Program

#Question id: 20385

#Unit 13. Methods in Biology

PCR primer dimers are formed when 
TLS Online TPP Program

#Question id: 4579

#Unit 11. Evolution and Behavior

About which of these did Darwin have a poor understanding?
TLS Online TPP Program

#Question id: 21240

#Unit 7. System Physiology – Animal

A visual exam in an 80-year-old man shows he has a reduced ability to see objects in the upper and lower quadrants of the left visual fields of both eyes but some vision remains in the central regions of the visual field. The diagnosis is
TLS Online TPP Program

#Question id: 4161

#Unit 3. Fundamental Processes

The link between an activated amino acid and tRNA is an __ bond between the __ of the amino acid and a hydroxyl group of the tRNA.