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TLS Online TPP Program

#Question id: 27173

The following statements are made with reference to membrane fusion reactions in vesicle transport catalyzed by transmembrane SNARE proteins.


#XL - T Zoology

  1. The SNARE transmembrane proteins exist as complementary sets, with v-SNARES on vesicle membranes and t-SNARES on target membranes

  2. A v-SNARE is usually composed of 3 proteins and t-SNARE is a single polypeptide chain
  3. The v-SNARE and t-SNARE proteins of a pair interact via helical domains possessed by the two proteins, resulting in formation of a stable two-helix bundle
  4. Membrane fusion is catalysed by the energy that is freed when the interacting helices wrap around each other to pull the membrane faces together, concurrently squeezing out water molecules from the interface.
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TLS Online TPP Program

#Question id: 508

#XL - S Microbiology

Phosphofructokinase I deficiency results in
TLS Online TPP Program

#Question id: 407

#XL - Q Biochemistry

The reaction A + B -> C has a DG'° of –20 kJ/mol at 25° C.  Starting under standard conditions, one can predict that:
TLS Online TPP Program

#Question id: 5000

#XL - S Microbiology

The existence of evolutionary trends, such as increasing body sizes among horse species, is evidence that
TLS Online TPP Program

#Question id: 19547

#XL - P Chemistry

Which one of the alkali metals form only the normal oxide M2O on heating in air?
TLS Online TPP Program

#Question id: 10955

#XL - T Zoology

A 2-year-old boy bruises easily and has previously had bleeding gums. The maternal grandfather has a bleeding disorder. His physical examination shows several small bruises on the legs. Of which coagulation factor would you suspect this patient to be deficient?