Question
Biology Question on respiration in plants
The most important source of energy on earth is
A
ATP molecules
B
chlorophyll
C
xanthophyll
D
carotenoids
Answer
ATP molecules
Explanation
Solution
The ATP-ADP system functions as a carrier of chemical energy because ADP is able to accept a phosphate group during coupled energy-yielding reaction of catabolism and the ATP so formed is able to donate its terminal phosphate group in coupled energy-requiring reactions.