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TLS Online TPP Program

#Question id: 9052

Which of the following causes seasons on Earth?

#Unit 9. Diversity of Life Forms
  1. the variation in proximity of the Earth to the sun at different times of the year
  2. the constant tilt of the Earth, combined with its orbit around the sun
  3. the distance between the Earth and the sun in winter versus in the summer
  4. the variation or wobble of Earth's tilt during the year
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TLS Online TPP Program

#Question id: 3280

#Unit 11. Evolution and Behavior

Small populations are threatened by the loss of genetic diversity from

a. Inbreeding

b. Genetic drift

c. Limited mating
TLS Online TPP Program

#Question id: 31172

#Unit 7. System Physiology – Animal

Which of the following is not a neurotrophin?
TLS Online TPP Program

#Question id: 9273

#Unit 6. System Physiology – Plant

In the higher excited state, chlorophyll is extremely unstable; it rapidly gives up some of its energy to the surroundings as heat, and enters the lowest excited state, the excited chlorophyll has four alternative pathways for disposing of its available energy: fluorescence, Heat loss, energy transfer, photochemistry; all process takes place in which wavelength,
TLS Online TPP Program

#Question id: 16390

#Unit 7. System Physiology – Animal

What is the effect of aldosterone on blood pressure during stress?
TLS Online TPP Program

#Question id: 23666

#Unit 13. Methods in Biology

Which is not necessary as part of an expression vector used in E. coli?