Nthe body cells of most organisms, oxygen is used to release for use by the cells. a) urea b) sugar c) energy d) carbon dioxide

C

Explanation:

Oxygen is used the ultimate proton acceptor in the mitochondria of cells. During the Krebs cycle, the H+ ions produces from oxidation of FADH2 and NADH are pumped to the inter-membrane space. The proton motive force generated is used to make ATPs and ultimately reduce oxygen to water.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.