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TLS Online TPP Program

#Question id: 10209

Protection against photodamage is a multilevel process, excited state of chlorophyll is not rapidly quenched by photochemistry it can react with molecular oxygen to form toxic photoproducts such as as singlet oxygen (1 O2*) what can damage if this second line of defense also fails to eliminate the reactive photoproducts?

#Unit 6. System Physiology – Plant
  1. the photoproducts can damage the LHC I protein of PSI, this damage leads to photoinhibition
  2. the photoproducts can damage the D2 protein of PSI, this damage leads to photoinhibition
  3. the photoproducts can damage the LHC II protein of PSII, this damage leads to photoinhibition

  4. the photoproducts can damage the D1 protein of PSII, this damage leads to photoinhibition

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TLS Online TPP Program

#Question id: 12027

#Unit 7. System Physiology – Animal

If you place a small piece of a cracker on your tongue, what would you expect to happen?
TLS Online TPP Program

#Question id: 12570

#Unit 10. Ecological Principles

Extinction is a natural phenomenon. It is estimated that 99% of all species that ever lived are now extinct. Why then do we say that we are now in a biodiversity crisis?
TLS Online TPP Program

#Question id: 11194

#Unit 7. System Physiology – Animal

The "threshold" potential of a membrane is the ________.
TLS Online TPP Program

#Question id: 11343

#Unit 2. Cellular Organization

In the liver, which type of GLUT transports glucose out of hepatocytes when liver glycogen is broken down to replenish blood glucose?
TLS Online TPP Program

#Question id: 27488

#Unit 1. Molecules and their Interaction Relevant to Biology

Cyclic monosaccharides or glycosides that are epimers, differing from each other in the configuration of C-1 if they are aldoses or in the configuration at C-2 if they are ketoses are known as