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TLS Online TPP Program

#Question id: 10799

Arabidopsis thaliana mutants that lack the enzyme chalcone synthase____

#Unit 6. System Physiology – Plant
  1. Lacking Lignin, Is a Highly Complex flavonoids
  2. Still formed Tannins
  3. Lacking flavonoids, and these plants are much more sensitive to UV-B radiation

  4. inhibits synthesis of Trans-cinnamic acid, p-coumaric acid, they are derivatives of chalcone synthase

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TLS Online TPP Program

#Question id: 12573

#Unit 10. Ecological Principles

Which of the following conditions is the most likely indicator of a population in an extinction vortex? 
TLS Online TPP Program

#Question id: 12805

#Unit 10. Ecological Principles

If  global  warming  continues at  its  present rate,  which  biomes  will  likely  take  the  place  of  the  coniferous forest (taiga)?
TLS Online TPP Program

#Question id: 912

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct about the native state of a protein

a. is unaffected by changes in temperature and pH.

b. corresponds to the highest Gibbs free energy state.

c. is determined by its primary amino acid sequence.

d. corresponds to the lowest entropic state.
TLS Online TPP Program

#Question id: 2102

#Unit 2. Cellular Organization

In which of the following environments would there be the greatest need for osmoregulation?
TLS Online TPP Program

#Question id: 453

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement does not explain why many biochemical processes are carried out via multi-step pathways rather than by single-step reactions (or only a few steps)