Which of the following is NOT true about CO 2 and O 2 ?a. O 2 is required by most organisms to produce cellular energy-ATP. b. 0 2 is produced by plants and other producers by cellular respiration. c. Both gases move through stomates of plants. d. C0 2 is utilized by plants to make sugars.

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers