Two major sources of mutation are radiation and reactive oxygen species (ROS).The reactive oxygen species hypothesis for aging postulates that 

1) Senescence results from the accumulation of DNA, lipid, and protein damage inflicted by ROS of mitochondrial origin; and

2) Mitochondria of long-lived species should produce high ROS than do mitochondria of short-lived species.

3) the capacity of mitochondria to consume ROS might distinguish long-lived species from short-lived species, rather than differences in ROS generation. 

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#Question id: 837

#Unit 1. Molecules and their Interaction Relevant to Biology

Increasing order of free energy in unfolded to folded conformation of the proteins, the correct order is,

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#Question id: 1269

#Unit 4. Cell Communication and Cell Signaling

Which of the following constituents are not found in most basal laminae?

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#Question id: 23747

#General Aptitude

A boy is sitting on the back seat of a car. when the driver suddenly starts the car, the boy experiences a backward force-

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#Question id: 23411

#General Aptitude

In any discipline, theories and observables (related experimental results)

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#Question id: 12754

#Unit 13. Methods in Biology

A restriction enzyme cuts 1000bp away from the recognition site the restriction enzyme is most likely to be