Failure of which cell-cycle checkpoint is most likely to result in non-dysjunction?

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#Question id: 9619

#XL - R Botany

A common ancestor for both species C and E could be at position number 

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#Question id: 9620

#XL - R Botany

The two extant species that are most closely related to each other are

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#Question id: 9795

#XL - Q Biochemistry

Following statements are made about uncompetitive inhibition of an enzyme:

A. Uncompetitive inhibitor binds to both free enzyme as well as an enzyme-substrate complex.

B. Addition of uncompetitive inhibitor lowers the Vmax of the reaction.

C. Apparent KM of the enzyme is lowered.

D. Apparent KM of the enzyme remains unchanged.

Which one of the following option represents the correct combination of the statments?

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#Question id: 10127

#XL - Q Biochemistry

In higher plants, the multi-subunit protein supercomplex has two complete reaction centers and some antenna complexes. The core of the reaction center consists of two membrane proteins known as D1 and D2, Which contained a multi-subunit protein supercomplexes;

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#Question id: 10128

#XL - Q Biochemistry

PSII also involve in oxidation of water molecules, water is a very stable molecule that’s why  Oxidation of water to form molecular oxygen is very difficult, Many studies have provided a substantial amount of information about the process known;

which of the following are false ?

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#Question id: 10135

#XL - R Botany

Which of the following are strongest reductant?