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TLS Online TPP Program

#Question id: 9185

Plants are affected by an array of pathogens. Which of the following is a plant defense against disease?

#Unit 9. Diversity of Life Forms
  1. cells near the point of infection destroying themselves to prevent the spread of the infection
  2. production of chemicals that kill pathogens
  3. acquiring gene-for-gene recognition that allows specific proteins to interact so that the plant can produce defenses against the pathogen
  4. All of the above are plant defenses against disease.
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TLS Online TPP Program

#Question id: 19102

#Unit 6. System Physiology – Plant

Phytoplasmas are specialized bacteria that are obligate parasites of the phloem tissue. They are mainly spread by these insects except;
TLS Online TPP Program

#Question id: 19086

#Unit 6. System Physiology – Plant

R genes recognizes__
TLS Online TPP Program

#Question id: 19872

#Unit 13. Methods in Biology

Recognize the same sequence and can cut at exactly the same position, these enzyme are called__
TLS Online TPP Program

#Question id: 3500

#Unit 11. Evolution and Behavior

To call a behavior altruistic, an evolutionary biologist will have to demonstrate that

A) These behavior is decrease the individual fitness of the donor and increases the individual fitness of the recipient

B) These behavior is increases the individual fitness of both the donor and the recipient

C) Overall increase the inclusive fitness of the population

D) These behavior depend on genetic relation

Which of the following above statement is correct?
TLS Online TPP Program

#Question id: 4659

#Unit 3. Fundamental Processes

Many bacterial responses are controlled by two component regulatory systems. What will happen at the high concentration of glutamine and at the low concentration of glutamine?

a) At high concentrations glutamine binds to a sensor domain of NtrB conformational change in the protein that inhibits its histidine kinase activity

b) NtrC phosphorylation takes place causes a conformational change in NtrC that unmasks the NtrC DNA-binding domain so that it can bind to the glnA enhancers

c) At the same time, the regulatory domain of NtrC blocks its DNA-binding domain from binding the glnA enhancers

d) At low concentrations of glutamine dissociates from the sensor domain in the NtrB protein, leading to activation of a histidine kinase transmitter domain

Which of the following given combination is correct?