1. Bio Ch 2 review In groups of three or four, you will decide on the correct answer for points.

2. Which of the following is the basic unit of matter? A. Cell B. Atom C. Electron D. Neutron

3. If an atom has 3 protons and 4 neutrons, its atomic number is __________. A. 1 B. 3 C. 4 D. 7

4. Fluorine is an atom that has an atomic # of 9 and an atomic mass of 19. How many neutrons does this atom have? A. 9 B. 10 C. 19 D. 28

5. A pure substance made of just one kind of atom is called a(an) ________________. element

6. What particle is not included in the nucleus of an atom? A.Proton B. Electron C. Neutron D. All of the above

7. What is the most abundant compound in most living things? A.carbon dioxide B. hydrochloric acid C. water D. iodine

8. In a covalent bond, electrons are ____________________. Shared

9. Monosaccharides and polysaccharides are A.Carbohydrates B. lipids C.nucleic acids D. proteins

10. A ____________ is a substance with two or more elements in a definite proportion. A.nucleic acid B.compound C.ionic bond D.suspension

11. When a molecule has an uneven distribution of electrons is called ______________. polar

12. ____________ isotopes are used to determine the age of rocks and fossils, treat cancer, and trace the movements of substances in organisms Radioactive

13. The organic molecules that provide organisms with energy are A.carbohydrates B.lipids C.nucleic acids D.proteins

14. A monosaccharide would make the indicator Benedict’s solution this color: __________________. orange

15. The electrons in the outermost cloud or orbital of an atom are known as ___________ electrons. valence

16. Fats, oils and waxes are example of A. carbohydrates B. lipids C. nucleic acids D. proteins

17. What is an evenly distributed mixture of two or more substances A. suspension B. indicator C. catalyst D. solution

18. Iodine is an indicator that turns black in the presence of a(an) ________________. Starch or polysaccharide

19. A base has a pH __________________ than 7. More/greater

20. ____________________ are the monomers of carbohydrates. A. amino acids B. polymers C. nucleotides D. monosaccharides

21. When making a solution of Country Time lemonade, the lemonade mix is the ___________________. solute

22. Which of the following is a function of proteins? A. fight disease B. energy storage C. make up cell membranes D. insulation

23. The compounds that appear on the right of a chemical equation are called the ________________. products

24. A substance that increases the rate of chemical reactions is known as a(n) A.lipid B. catalyst C. indicator D. suspension

25. A protein that is a biological catalyst is a(an) A.steroid B. Iodine C. enzyme D. substrate

26. The process of putting monomers together into polymers is known as _________________. polymerization

27. Two elements that have the same number of protons but different number of neutrons are A.Isotopes B. Ions C. Solutes D. suspensions

28. A reaction that requires energy to occur is known as ________________________. endothermic

29. The biological molecule that stores genetic information are known as A. carbohydrates B. lipids C. nucleic acids D. proteins

30. What measures the concentration of hydrogen ions in a solution? _____________________ pH scale

31. Organic molecules that turn Biuret reagent violet are A. carbohydrates B. lipids C. nucleic acids D. proteins

32. The active site is where an enzyme and the _____________________ bind together. A. isotope B. substrate C. lipid D. proteins

33. ____________________ are the monomers of proteins. A. amino acids B. polymers C. nucleotides D. monosaccharides