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TLS Online TPP Program

#Question id: 1020

HIV/AIDS can be categorized as a new or emerging infectious disease. By putting it into this category, we are effectively saying that

#Unit 4. Cell Communication and Cell Signaling

  1. this infection hasn't been observed in the human population prior to recent (approximately 50 years or sooner) outbreaks

  2. this disease has been in susceptible populations for centuries, but has only recently achieved infection levels that became detectable.

  3. the infectious agent is still evolving and changing, unlike with older, more established diseases such as plague or polio.

  4. the disease has always been in susceptible populations and causing disease, but we lacked the technology to detect it.

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TLS Online TPP Program

#Question id: 31288

#Unit 5. Developmental Biology

Which of the following reciprocal pathways established parasegmental periodicity?
TLS Online TPP Program

#Question id: 4640

#Unit 11. Evolution and Behavior

During drought years on the Galapagos, small, easily eaten seeds become rare, leaving mostly large, hard-cased seeds that only birds with large beaks can eat. If a drought persists for several years, what should one expect to result from natural selection?
TLS Online TPP Program

#Question id: 19313

#Unit 4. Cell Communication and Cell Signaling

Match the following effector molecules with their pathogen
     

    

        Pathogen

     

    Effector molecules

 

        Function

 

A) Fusicoccum amygdali

 

i) HC‐toxin

 

a) inhibits salicylic acid (SA)‐mediated defense responses

 

 

B) Cochliobolus carbonum

 

ii) Coronatine

 

b) Constitutively activates the plasma membrane H+‐ATPase

 

 

C) Pseudomonas syringae

 

iii) Fusicoccin

 

c) Inhibits histone deacetylase activity

 

 

 

 

d) Opening of stomata

 

TLS Online TPP Program

#Question id: 28222

#Unit 5. Developmental Biology

Hematopoietic stem cells has the ability to divide into lymphoid progenitor cell as well as myeloid progentior cell only, this is an example of
TLS Online TPP Program

#Question id: 580

#Unit 1. Molecules and their Interaction Relevant to Biology

In a first order chemical reaction, the velocity of the reaction is proportional to the ________, while in a zero order reaction, the velocity of the reaction is proportional to the ________.