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: 123

#Unit 1. Molecules and their Interaction Relevant to Biology

Which would you expect for the fatty acyl chains of the membrane phospholipids of bacteria grown at low temperature?

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#Question id: 23699

#Unit 13. Methods in Biology

The first cell whose entire genome was sequenced was which of the following?

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#Question id: 31352

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following graph shows correct relationship

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#Question id: 11803

#Unit 6. System Physiology – Plant

Due to damage exudation of sap from cut petioles or stems takes place they can be collected. However, quantities of collected sap are small, and the method is technically difficult. A preferable approach for collecting exuded sap is to use an

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#Question id: 5798

#Unit 8. Inheritance Biology

Mutations: