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TLS Online TPP Program

#Question id: 12573

Which of the following conditions is the most likely indicator of a population in an extinction vortex? 

#Unit 10. Ecological Principles
  1. The population is geographically divided into smaller populations.
  2. The species is found only in small pockets of its former range
  3. The effective population size of the species falls below 500.
  4. Genetic measurements indicate a continuing loss of genetic variation.
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TLS Online TPP Program

#Question id: 1424

#Unit 4. Cell Communication and Cell Signaling

Gain-of-function mutations in which of the following genes typify colorectal carcinomas?
TLS Online TPP Program

#Question id: 84

#Unit 1. Molecules and their Interaction Relevant to Biology

Below is the Fischer projection of D-galactose. Which is the proper Haworth projection of β-D-galactopyranose?
TLS Online TPP Program

#Question id: 5549

#Unit 5. Developmental Biology

During initial stages of vertebrate cleavage, successive blastomeres
TLS Online TPP Program

#Question id: 18382

#Unit 12. Applied Biology

Which bacterial enzyme has been transferred to Arabidopsis thaliana which can absorb mercury, and it reduces to volatile Hg from the leaf surface. 
TLS Online TPP Program

#Question id: 4317

#Unit 3. Fundamental Processes

Which of the following functions does the product of the p53 gene carry out?