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TLS Online TPP Program

#Question id: 9180

Which of the following statements can be accurately made about light in aquatic environments?

#Unit 9. Diversity of Life Forms
  1. Water equally reflects and absorbs all wavelengths of light.
  2. Longer wavelengths penetrate to greater depths.
  3. Light penetration largely limits the distribution of photosynthetic species.
  4. Most photosynthetic organisms avoid the surface where the light is too intense.
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TLS Online TPP Program

#Question id: 23675

#Unit 13. Methods in Biology

After ten cycles of PCR, by approximately what factor will the number of DNA molecules in a sample be increased? Assume maximum efficiency.
TLS Online TPP Program

#Question id: 4958

#Unit 11. Evolution and Behavior

What is true of the fossil record of mammalian origins?
TLS Online TPP Program

#Question id: 10818

#Unit 10. Ecological Principles

Which of these relationships is generally not considered one that underlies community structure?
TLS Online TPP Program

#Question id: 11562

#Unit 7. System Physiology – Animal

The relationship between the insect hormones ecdysteroid and PTTH is an example of ________.
TLS Online TPP Program

#Question id: 4944

#Unit 11. Evolution and Behavior

What is true of the amino acids that might have been delivered to Earth within carbonaceous chondrites?