Citrate can react asymmetrically in the citric acid cycle because the enzyme aconitase citrate can react asymmetrically in the citric acid cycle because the enzyme aconitase does not distinguish the -ch2coo- group binds both forms of isocitrate binds citrate asymmetrically binds either form of citrate

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.