ASAP ASAP I NEED HELP HELPTODAY 10/15 THURSDAY I need help on for biology Chapter 2 Test Review 1. Name the subatomic particles that make up an atom.
2. What particles orbit around the nucleus of an atom?
3. What is a molecule?
4. What elements make up a water molecule?
5. Are the chemical and physical properties of a compound normally different, or the same, from the elements that make up the compound? Give an example.
6. What is the difference between an ionic bond and a covalent bond?
7. Which particle of an atom makes chemical bonds? What does valence mean?
8. What type of ion forms when it loses an electron? When it gains an electron?
9. What is the difference between cohesion and adhesion? Give examples of both.
10. What does “polar” mean?
11. Which side of the water molecule is slightly negative, and which side is slightly positive?
12. What is the difference between a solution and a suspension?
13. What is the range of the pH scale? Which is an acid and which is a base? Give an example of both an acid and a base.
14. Solutions with a high concentration of hydrogen ions are called and solutions with a high concentration of hydroxide ions are called .
15. What makes carbon so special?
16. What is a monomer? Give examples of monomers that form macromolecules.
17. Name some important functions of proteins.
18. What are the four major groups of macromolecules?
19. What is activation energy?
20. Which reaction absorbs energy, and which reaction releases energy?

21. What are enzymes? What effects an enzymes efficiency?
22. What is a catalyst?
23. How do enzymes act as catalysts?

26. List three functions of enzymes.
27. How do temperature and pH affect enzyme activity?

29. What three things make up a nucleotide?
30. What is the backbone of DNA made of?
31. What is the difference between DNA and RNA?
32. List and label 3 monosaccharides, 3 disaccharides, and 3 polysaccharides.

36. What type of bond connects 2 amino acids?