Chapter 3 Flashcards
1
Q
activation energy
A
The energy that must be acquired by a molecule to undergo
a chemical reaction.
2
Q
catalyst
A
Substance that accelerates a chemical reaction by lowering
its activation energy; enzymes perform this role in cells.
3
Q
enzyme
A
A protein that catalyzes a specific chemical reaction.
4
Q
oxidation
A
Removal of electrons from an atom, as occurs during the
addition of oxygen to a carbon atom or when a hydrogen
is removed from a carbon atom; can also refer to a partial
shift of electrons between atoms linked by a covalent bond
5
Q
photosynthesis
A
The process by which plants, algae, and some bacteria
use the energy of sunlight to drive the synthesis of organic
molecules from carbon dioxide and water
