TLS Online TPP Program

#Question id: 12138


The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to

#Unit 10. Ecological Principles
  1. How lethal each pathogen is.
  2. The mobility of their hosts. 
  3. The fact that viruses are very small. 
  4. Innate resistance.
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TLS Online TPP Program

#Question id: 27376

#Unit 1. Molecules and their Interaction Relevant to Biology

The number of neutrons is equal to

TLS Online TPP Program

#Question id: 5003

#Unit 11. Evolution and Behavior

Fruit fly eyes are of the compound type, structurally very different from the camera-type eyes of mammals. Even the camera-type eyes of mollusks, such as octopi, are structurally quite different from those of mammals. Yet, fruit flies, octopi, and mammals possess very similar versions of Pax-6. The fact that the same gene helps produce very different types of eyes is most likely due to

TLS Online TPP Program

#Question id: 3508

#Unit 11. Evolution and Behavior

In these cases, females would indirect benefit by choosing the male that having which of following attribute 

a. can provide the best care

b. provide no care, but maintain territories

c. Large males, have probably been successful at living long, acquiring a lot of food and resisting parasites and disease

d. The long tail of the peacock

TLS Online TPP Program

#Question id: 7768

#Unit 5. Developmental Biology

The insulin signaling pathway inhibits the synthesis of the Foxo transcription factor proteins that would otherwise increase cellular longevity. Downregulation of the insulin signaling pathway has several other functions, choose right one

TLS Online TPP Program

#Question id: 9051

#Unit 9. Diversity of Life Forms

What would happen to the seasons if Earth were tilted 35 degrees off its orbital plane instead of the usual 23.5 degrees?