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#Question id: 18808


What would happen if serum is omitted from the ELISA, but all other steps remain same?

#Unit 13. Methods in Biology
  1. Anti-human Ig-conjugate would not bind and be washed away
  2. The OD values would be nearly the same as the assay control
  3. Both (a) and (b)
  4. Anti-human Ig-conjugate would bind non-specifically to the ELISA plate
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TLS Online TPP Program

#Question id: 28296

#Unit 5. Developmental Biology

mechanisms of egg activation in sea urchins-Bindin receptor responsible for the activation of____

TLS Online TPP Program

#Question id: 5539

#Unit 5. Developmental Biology

When does neurulation occur during human pregnancy?

TLS Online TPP Program

#Question id: 22956

#Unit 5. Developmental Biology

Individual and overlapping expression of homeotic genes in adjacent whorl of a flower determine the pattern of floral organ development. In an Arabidopsis mutant, floral organs are distributed as follows
WHORL 1 Sepal
WHORL 2 Petal
WHORL 3 Petal
WHORL 4 Sepal
Loss of function mutation in which one of the following genes would have caused the above pattern of floral organs development 

TLS Online TPP Program

#Question id: 10383

#Unit 6. System Physiology – Plant

The nitrogenase enzyme complex fixes N2 produces ammonia, The nitrogenase enzyme complex catalyzes this reaction by following characteristics given below;

a) It can be separated into two components—the Fe protein and the MoFe protein— neither of which has catalytic activity by itself

b) Fe protein is the smaller of the two components and has two identical subunits, each contains an iron–sulfur cluster, which participates in the redox reactions

c) The Fe protein is irreversibly inactivated by O2 while MoFe protein is activated by O2

d) MoFe protein has four subunits, each subunit has two Mo–Fe–S clusters

e) Ferredoxin serves as an electron donor to the Fe protein, and Fe protein reduces the MoFe protein without any hydrolysing ATP

f) Only prokaryotes have nitrogenase enzyme

Which of the following characteristics of nitrogenase enzyme complex is incorrect?

TLS Online TPP Program

#Question id: 14884

#Unit 4. Cell Communication and Cell Signaling

Which types of cell shows the middle affinity towards the self proteins?