Science Vocabulary

3. Acid an organic acid that contains a carboxyl group and an amino group.
4. an intermediate in carbohydrate and lipid metabolism
7. a disaccharide made of two monosaccharides.
8. the building blocks of DNA and RNA.
11. a chemical reaction that releases energy through light or heat.
12. any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents.
13. Acids produced by the breakdown of fats through a process called hydrolysis.
15. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.
17. having carbon–carbon double or triple bonds and therefore not containing the greatest possible number of hydrogen atoms for the number of carbons.
18. any of a class of sugars whose molecules contain two monosaccharide residues.
20. the substance on which an enzyme acts.

1. requires or absorbs energy from its surroundings.
2. polymers of amino acids.
5. are molecular compounds made from carbon, hydrogen and oxygen.
6. the building blocks of disaccharides and polysaccharides.
9. a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
10. Acid DNA or RNA.
14. a carbohydrate whose molecules consist of a number of sugar molecules bonded together.
16. containing the greatest possible number of hydrogen atoms, and so having no carbon–carbon double or triple bonds.
19. a substance that is formed as the result of a chemical reaction.