Biology Module #5

5. A change that affects the appearance but not the chemical makeup of a substance.
9. A lipid made from fatty acids that have no double bonds between carbon atoms.
11. A membrane that allows some molecules to pass through but does not allow other molecules to pass through.
12. that are made up of more than two monosaccharides.
14. A lipid made from fatty acids that have at least one double bond between carbon atoms.
15. Two different molecules that have the same chemical formula.
16. A bond that links amino acids together in a protein.
18. The random motion of molecules from an area of high concentration to an area of low concentration.
20. Breaking down complex molecules by the chemical addition of water.
22. The tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration.
23. Simple carbohydrates that contain 3 to 10 carbon atoms.
25. A measurement of how much solute exists in a certain volume of solvent.

1. that are made up of two monosaccharides.
2. One of three forms-- solid, liquid, or gas-- which every substance is capable of attaining.
3. A molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfur, and or phosphorus.
4. Anything that has mass and takes up space.
6. that result from atoms linking together.
7. A collection of atoms that all have the same number of protons.
8. A strong attraction between hydrogen atoms and certain other atoms, usually oxygen or nitrogen, in specific molecules.
10. Lacking any affinity to water.
13. A chemical reaction in which molecules combine by removing water.
17. An explanation or representation of something that cannot be seen.
19. A change that alters the makeup of the elements or molecules of a substance.
21. The process by which living organisms produce larger molecules from smaller ones.
24. A substance that alters the speed of a chemical reaction but is not used up in the process