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TLS Online TPP Program

#Question id: 10157

In Glycolate pathway, Glycine exits the peroxisomes and enters the mitochondria where a multienzyme complex catalyzes the conversion of two molecules of glycine and one molecule of NAD+ into one molecule each of serine, NADH, NH4 +, and CO2; the enzyme complex used in this reaction is

#I Life Science/ Life Sciences Group – I-V
  1. Glycine decarboxylase and serine hydroxy methyltransferase
  2. Glycolate oxidase and serine hydroxy methyltransferase
  3. Glycine decarboxylase and Serine:2-oxoglutarate aminotransferase
  4. Glycine decarboxylase complex (GDC) and Ferredoxin-dependent glutamate synthase (GOGAT)
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TLS Online TPP Program

#Question id: 15657

#SCPH01 Biochemistry

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium.
You next construct a MelA– MelB– double mutant, which gives the following behavior:
 
Which of your two models is consistent with this new data?
a) the MelA- MelB- double mutant is identical to the MelB- mutant
b) MelA- is epistatic to MelB-
c) MelB- is epistatic to MelA-
d) the MelA- MelB- double mutant is identical to the MelA- mutant
Which of the following is the correct prediction about the double mutants?
TLS Online TPP Program

#Question id: 11660

#SCPH28 | Zoology

Which of the following statements about the succession is true?
TLS Online TPP Program

#Question id: 11376

#SCPH28 | Zoology

Robert MacArthur and E. O. Wilson developed a general model of island biogeography, In this figure, terms A, B, C and D in order are

 
TLS Online TPP Program

#Question id: 10724

#SCPH06 I Botany

This example is based on the hypothetical ( x means Present), compare species diversity within different community Which one of the


following conclusions is most appropriate based on the above observations?

A) The beta diversity between the community X and Y is 5

B) The gamma diversity for the these communities are 14

C) The beta diversity between the community X and Z is greater than Y and Z

D) Community Y has minimum Alpha diversity among community
TLS Online TPP Program

#Question id: 9192

#SCPH28 | Zoology

The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to