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TLS Online TPP Program

#Question id: 9154

The main reason polar regions are cooler than the equator is that ________.

#Unit 9. Diversity of Life Forms
  1. solar radiation strikes the poles at a lower angle and travels through more atmosphere
  2. the poles are farther from the sun than is the equator
  3. the polar atmosphere is thinner and contains fewer greenhouse gases
  4. the poles are permanently tilted away from the sun
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TLS Online TPP Program

#Question id: 11965

#Unit 7. System Physiology – Animal

Which of the following organs is correctly paired with its function?
TLS Online TPP Program

#Question id: 17198

#Unit 7. System Physiology – Animal

What is the role of endorphins?
TLS Online TPP Program

#Question id: 14997

#Unit 8. Inheritance Biology

You capture several interesting insects from a population in your yard. By inbreeding, you develop true breeding strains that differ only in the shape of their wings - one strain has round wings while the other strain has oval wings. How might you demonstrate that Mendel's principles apply to your insects?
TLS Online TPP Program

#Question id: 325

#Unit 1. Molecules and their Interaction Relevant to Biology

A true statement about hydrophobic interactions is that they:
TLS Online TPP Program

#Question id: 1573

#Unit 4. Cell Communication and Cell Signaling

Which cells and which signaling molecules are responsible for initiating an inflammatory response?