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: 10301

#Unit 6. System Physiology – Plant

Which one of the following enzyme are not invlved in reduction of NAD+?

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#Question id: 10302

#Unit 7. System Physiology – Animal

During respiration, given below some of the reaction of glycolysis are irreversible which are bypass during gluconeogenesis,which of the following ics correcty involve in

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#Question id: 10306

#Unit 6. System Physiology – Plant

pyruvate dehydrogenase (PDH) complex requires five different coenzymes or prosthetic groups and these enzymesalso require four different vitamins in human nutrition are vital components of this system:

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#Question id: 10307

#Unit 6. System Physiology – Plant

pyruvate dehydrogenase (PDH) complex requires many enzymes for their functions, which of the following enzyme are not the part of this complex?

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#Question id: 10309

#Unit 6. System Physiology – Plant

Which of the following carbon compound also called the oxoglutarate? 

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#Question id: 10310

#Unit 6. System Physiology – Plant

Which of the following enzyme in the kreb’s cycle function as an allosteric enzyme found in matrix space?