Across
- 2. A compound of a class of simple organic compounds that contain a carboxyl and an amino group and that combine to form proteins
- 4. The minimum amount of energy required to start a chemical reaction
- 7. An organic compound, either RNA or DNA, whose molecules are made up of one or two chains of nucleotides and carry genetic information
- 8. The smallest unit of an element that maintains the chemical properties of that element
- 11. On an enzyme, the site that attaches to a substrate
- 18. A homogeneous mixture throughout which two or more substances are uniformly dispersed
- 19. Is a group of atoms that are held together by chemical forces
- 21. The attractive force between two bodies of different substances that are in contact with each other
- 23. Deoxyribonucleic acid, the material that contains the information that determines inherited characteristics
- 24. A value that is used to express the acidity and alkalinity (basicity) of a system
- 26. A substance that forms a chemical reaction
- 28. An electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
Down
- 1. An organic compound that is made of one or more chains of amino acids and that is a principle component of all cells
- 3. An atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge
- 5. A class of molecules that includes sugars, starches, and fiber; contains carbon, hydrogen, and oxygen
- 6. An organic compound that consists of a sugar, a phosphate, and a nitrogen base
- 9. Ribonucleic acid, a natural polymer that is present in all living cells and that plays a role in protein synthesis
- 10. The capacity to do work
- 12. The force that holds molecules of a single material together
- 13. Any compound that increases the number of hydroxide ions when dissolved in water
- 14. A substance made up of atoms of two or more different elements joined by chemical bonds
- 15. A substance that cannot be separated or broken down into simpler substances by chemical means
- 16. A molecule, either protein or RNA, that acts as a catalyst in biochemical reactions
- 17. Any compound that increases the number of hydronium ions when dissolved in water
- 20. A fat molecule or a molecule that has similar properties, including waxes and steroids
- 21. Adenosine triphosphate, an organic molecule that acts as the main energy source for cell processes
- 22. The reactant in reactions catalyzed by enzymes
- 25. A solution made from a weak acid and its conjugate base that neutralizes small amounts of acids or bases added to it
- 27. A substance or molecule that participates in a chemical reaction