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TLS Online TPP Program

#Question id: 9594

The first reaction that converts electron energy into chemical energy—What will happened in  the primary photochemical event—

#Unit 6. System Physiology – Plant
  1. The transfer of an electron from the excited state of a chlorophyll in the reaction centre to an acceptor molecule-pheophytin
  2. The reaction centre chlorophyll is in an oxidized state (electron deficient, or positively charged), and the nearby electron acceptor molecule is reduced (electron rich, or negatively charged)
  3. The reaction centre chlorophyll is in an oxidized state (electron deficient, or negatively charged), and the nearby electron acceptor molecule is reduced (positively charged)
  4. The transfer of an electron from the excited state of a chlorophyll in the reaction centre to an acceptor molecule- plastocyanin
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TLS Online TPP Program

#Question id: 24513

#Unit 10. Ecological Principles

during a life cycle of adult lancet fluke live in cows. They spread their eggs in cow manure, snails eat the eggs and the immature parasites hatch and infect their intestine. The snail coughs up these offspring in balls of slime and ants eat these slime balls loaded with flukes. The flukes migrate to the ant’s head and make them climb to the tops of grass blades where they are eaten by cows and the cycle starts over again
a. Only ant act as inntermediate host 
b. both snail and Ant act as intermediate host
c. cow act as definitive host due to sexual reproduction
d. only snail act as intermediate host due to asexual reproduction
TLS Online TPP Program

#Question id: 24283

#Unit 4. Cell Communication and Cell Signaling

Which type of cell junction is found in plants? 
TLS Online TPP Program

#Question id: 14953

#Unit 6. System Physiology – Plant

Which of the following is a wound-inducible glucan composed primarily of β(1,3)-linkages?
TLS Online TPP Program

#Question id: 4348

#Unit 3. Fundamental Processes

Under what conditions does the trp repressor block transcription of the trp operon?
TLS Online TPP Program

#Question id: 10536

#Unit 6. System Physiology – Plant

Hormonal interactions contribute to plant–insect herbivore interactions such as— ethylene, salicylic acid, and jasmonic acid. In particular, ethylene appears to play an important role in this context, what will be the effect of ethylene when is applied alone and when is applied with other amino acids?

a) ethylene applied together with JA it seems to reduces defense responses

b) Ethylene appears to applied alone to plants, ethylene has little effect on defense-related gene activation

c) when ethylene applied together with JA it seems to enhance JA responses or defense responses are significantly increased

d) Ethylene appears to applied alone to plants, ethylene has more effect on defense-related gene activation

Which of the following combination is correct about ethylene effects?