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TLS Online TPP Program

#Question id: 8927

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that

#Unit 9. Diversity of Life Forms
  1. arthropods have had more time to co-evolve with land plants than have vertebrates.
  2. extant terrestrial arthropods are better adapted to terrestrial life than are extant terrestrial vertebrates.
  3. ancestral arthropods must have been poorly adapted to aquatic life, thus experienced a selective pressure to invade land.
  4. vertebrates evolved from arthropods.
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TLS Online TPP Program

#Question id: 24637

#Unit 2. Cellular Organization

Which of the following topoisomerases can relax both positive and negative supercoils in eukaryotes
TLS Online TPP Program

#Question id: 380

#Unit 1. Molecules and their Interaction Relevant to Biology

The Henderson-Hasselbalch equation:
TLS Online TPP Program

#Question id: 12994

#Unit 1. Molecules and their Interaction Relevant to Biology

α-helix changes their configurations according to the environment then
a. when found in aqueous or plasm environment 
b. when found in membrane or hydrophobic environment
in the given condition interaction will be 
TLS Online TPP Program

#Question id: 12322

#Unit 10. Ecological Principles

Which of the following could qualify as a top-down control on a grassland community? 
TLS Online TPP Program

#Question id: 26500

#Unit 3. Fundamental Processes

Choose the correct statement 
1.UACUAAC is branch point sequence for U2 type introns 
2.UACUAAC is branch point sequence for U12 type introns
3.CCUUAAC is branch point sequence for U12 type introns
4.CCUUAAC is branch point sequence for U2 type introns