Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 8614
TLS Online TPP Program

#Question id: 11832

Ethylene production and action can be inhibited by various types of inhibitors, some statements about  the inhibitor is given below, which one of the following is incorrect?

#Unit 6. System Physiology – Plant
  1. The cobalt ion (Co2+) is an inhibitor of the ethylene biosynthetic pathway, blocking the conversion of ACC to ethylene by ACC oxidase
  2. Silver ions (Ag+) applied as silver nitrate (AgNO3) or as silver thiosulfate (Ag(S2O3)23-) are potent inhibitors of ethylene action
  3. The volatile compound cis-cyclooctene, but not its isomer trans-cyclooctene, is a strong competitive inhibitor of ethylene binding
  4. A novel inhibitor 1-methylcyclopropene (MCP), was recently found that binds almost irreversibly to the ethylene receptor
More Questions
TLS Online TPP Program

#Question id: 28236

#Unit 5. Developmental Biology

 One of the mechanism of stem cell regulation is Extracellular mechanisms which involve physical as well as chemical regulation. which of the following prediction is incorrect about the Physical mechanisms ?
TLS Online TPP Program

#Question id: 28237

#Unit 5. Developmental Biology

One of the regulation of extracellular mechanism is chemical regulation of stem cells takes the form of secreted proteins from surrounding cells that influence stem cell through signals, these Chemical signals maintain the stem cell in which state?
TLS Online TPP Program

#Question id: 28238

#Unit 5. Developmental Biology

 At what state stem cell exist, when stem cells become positioned farther from the niche? 
TLS Online TPP Program

#Question id: 28239

#Unit 5. Developmental Biology

 In principles of stem cell regulation involve Extracellular mechanisms leading to intracellular changes, for these changes various intracellular regulatory mechanisms include, except? 
TLS Online TPP Program

#Question id: 28240

#Unit 5. Developmental Biology

partitioning occurs at cytokinesis, factors determining cell fate are either selectively partitioned to one daughter cell or shared evenly between daughter cells, so these type of regulation called___
TLS Online TPP Program

#Question id: 28241

#Unit 5. Developmental Biology

regulation occurs through a factors that keep a stem cell in its quiescent or proliferative state, as well as promoting maturation of daughter cells toward a particular fate, these type of regulation is called as___