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TLS Online TPP Program

#Question id: 234

Which statement is false about plastoquinone?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. It is water soluble.

  2. It is important in photosynthetic electron transport.

  3. It contains five-carbon isoprenoid units.

  4. It can be converted to a semiquinone form.

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TLS Online TPP Program

#Question id: 12543

#Unit 10. Ecological Principles

Use Figure to answer the following questions. Examine this food web for a particular terrestrial ecosystem. Each letter is a species. The arrows represent energy flow.

Which species is most likely an omnivore?
TLS Online TPP Program

#Question id: 12544

#Unit 10. Ecological Principles

Use Figure to answer the following questions. Examine this food web for a particular terrestrial ecosystem. Each letter is a species. The arrows represent energy flow.

A toxic pollutant would probably reach its highest concentration in which species?
TLS Online TPP Program

#Question id: 12545

#Unit 10. Ecological Principles

Nitrogen is available to plants only in the form of
TLS Online TPP Program

#Question id: 12562

#Unit 10. Ecological Principles

In the nitrogen cycle, the bacteria that replenish the atmosphere with N
TLS Online TPP Program

#Question id: 12563

#Unit 10. Ecological Principles

How does phosphorus normally enter ecosystems? 
TLS Online TPP Program

#Question id: 12599

#Unit 10. Ecological Principles

What is the most important role of photosynthetic organisms in an ecosystem?