Review Chapter 2
Which of the following particles is negatively charged? Chapter 6 Chemistry in Biology Chapter 6 Diagnostic Questions (1-31) Which of the following particles is negatively charged? electron isotope neutron proton
2. Isotopes are created by a change in the Chapter 6 Chemistry in Biology Chapter 6 Diagnostic Questions 2. Isotopes are created by a change in the number of what particle of an atom? electrons neutrons protons ions
3. Identify the proteins that speed up the rate of chemical reactions. Chapter 6 Chemistry in Biology Chapter 6 Diagnostic Questions 3. Identify the proteins that speed up the rate of chemical reactions. substrates enzymes ions reactants
neutrons and electrons protons and electrons protons and neutrons Chapter 6 Chemistry in Biology 6.1 Formative Questions 4. What particles are in an atom’s nucleus? neutrons and electrons protons and electrons protons and neutrons protons, neutrons and electrons
5. What causes the overall charge of an atom to be zero? Chapter 6 Chemistry in Biology 6.1 Formative Questions 5. What causes the overall charge of an atom to be zero? an equal number of protons and neutrons an equal number of protons and electrons an equal number of neutrons and electrons an unequal number of protons and electrons
Which of the following particles is negatively charged? Chapter 6 Chemistry in Biology Chapter 6 Diagnostic Questions (1-31) Which of the following particles is negatively charged? electron isotope neutron proton
6. What type of substance is water? Chapter 6 Chemistry in Biology 6.1 Formative Questions 6. What type of substance is water? a compound an element an isotope a mixture
7. What provides the energy for all living processes? Chapter 6 Chemistry in Biology 6.1 Formative Questions 7. What provides the energy for all living processes? chemical bonds ionic compounds radioactive isotopes van der Waals forces
8. Which is a chemical reaction? Chapter 6 Chemistry in Biology 6.2 Formative Questions 8. Which is a chemical reaction? a match burning salt dissolving water boiling gasoline evaporating
9. Which chemical reaction is endothermic? Chapter 6 Chemistry in Biology 6.2 Formative Questions 9. Which chemical reaction is endothermic?
10. How does an enzyme increase the rate of a chemical reaction? Chapter 6 Chemistry in Biology 6.2 Formative Questions 10. How does an enzyme increase the rate of a chemical reaction? It acts as a reactant. It reduces the amount of heat produced. It increases the amount of product. It lowers the activation energy.
11. What occurs at the active site in the enzyme substrate complex? Chapter 6 Chemistry in Biology 6.2 Formative Questions 11. What occurs at the active site in the enzyme substrate complex?
A. An exothermic chemical reaction takes place. Chapter 6 Chemistry in Biology 6.2 Formative Questions A. An exothermic chemical reaction takes place. Chemical bonds are broken and new bonds are formed. The enzyme gets used up in the reaction. The substrates provide energy for the enzyme.
12. Why is water able to dissolve a wide variety of solutes? Chapter 6 Chemistry in Biology 6.3 Formative Questions 12. Why is water able to dissolve a wide variety of solutes? It acts as a catalyst. Its pH is neutral. It is a polar molecule. It is an ionic compound.
13. What type of bonds attracts water molecules Chapter 6 Chemistry in Biology 6.3 Formative Questions 13. What type of bonds attracts water molecules to each other and to other substances? covalent bonds double bonds hydrogen bonds ionic bonds
14. Which ion, when released in water, causes a solution to be basic? Chapter 6 Chemistry in Biology 6.3 Formative Questions 14. Which ion, when released in water, causes a solution to be basic? Cl– OH– H+ Na+
15. What is the name for a substance that keeps Chapter 6 Chemistry in Biology 6.3 Formative Questions 15. What is the name for a substance that keeps the pH in cells within the 6.5 to 7.5 pH range? alkali antacid buffer neutralizer
16. Which element do almost all biological molecules contain? Chapter 6 Chemistry in Biology 6.4 Formative Questions 16. Which element do almost all biological molecules contain? carbon nitrogen phosphorus sodium
How many covalent bonds can carbon form with other atoms? Chapter 6 Chemistry in Biology 6.4 Formative Questions How many covalent bonds can carbon form with other atoms? 1 2 4 8
18. What type of biological molecule is an enzyme? Chapter 6 Chemistry in Biology 6.4 Formative Questions 18. What type of biological molecule is an enzyme? hormone nucleic acid protein steroid
19. What are fats, oils, and waxes composed of? Chapter 6 Chemistry in Biology 6.4 Formative Questions 19. What are fats, oils, and waxes composed of? lipids nucleotides polypeptides sugars
20. Which biological molecule transports substances between cells? Chapter 6 Chemistry in Biology 6.4 Formative Questions 20. Which biological molecule transports substances between cells? carbohydrate lipid nucleic acid protein
21. What are the monomers that make up proteins? Chapter 6 Chemistry in Biology 6.4 Formative Questions 21. What are the monomers that make up proteins? amino acids fatty acids glycerols nucleotides
22. Look at the following figure. Determine Chapter 6 Chemistry in Biology Chapter Assessment Questions 22. Look at the following figure. Determine what the upward curve represents. ? activation energy reactants products enzymes
23. Look at the energy levels in the atom. Chapter 6 Chemistry in Biology Chapter Assessment Questions 23. Look at the energy levels in the atom. What is the maximum number of electrons energy level two can hold? 2 4 6 8
24. Explain why chemical equations must be balanced. Short answer. Chapter 6 Chemistry in Biology Chapter Assessment Questions 24. Explain why chemical equations must be balanced. Short answer. Answer: Chemical reactions require balance of mass. Therefore, the number of atoms of each element on the reactant side must equal the number of atoms of the same element on the product side.
25. Which is a result of van der Waals forces? Chapter 6 Chemistry in Biology Standardized Test Practice 25. Which is a result of van der Waals forces? atoms sharing electrons table salt dissolving in water ionic compounds forming crystals water molecules forming droplets
26. What is true of this chemical reaction? Chapter 6 Chemistry in Biology Standardized Test Practice 26. What is true of this chemical reaction?
A. Energy is not needed to start the chemical reaction. Chapter 6 Chemistry in Biology Standardized Test Practice A. Energy is not needed to start the chemical reaction. Heat and/or light energy are released in this reaction. The activation energy is greater than the energy released. The energy of the products and the reactants is the same.
27. Which fruit contains a higher concentration of hydrogen ions? Chapter 6 Chemistry in Biology Standardized Test Practice 27. Which fruit contains a higher concentration of hydrogen ions? tomatoes bananas
28. What do cellulose and chitin have in common? Chapter 6 Chemistry in Biology Standardized Test Practice 28. What do cellulose and chitin have in common? They are energy-storing polymers. They are found in the cells of animals. They are structural polysaccharides. They are composed of repeating sucrose units.
29. Which polysaccharide stores energy in muscle and liver tissue? Chapter 6 Chemistry in Biology Standardized Test Practice 29. Which polysaccharide stores energy in muscle and liver tissue? gluten glycogen starch sucrolose
30. What is the function of this biological macromolecule? Chapter 6 Chemistry in Biology Standardized Test Practice 30. What is the function of this biological macromolecule? A. communicate signals between cells B. produce vitamins and hormones C. provide support and protection D. store and transmit genetic information
31. Which is a characteristic of all lipids? Chapter 6 Chemistry in Biology Standardized Test Practice 31. Which is a characteristic of all lipids? They are saturated triglycerides. They do not dissolve in water. They are liquid at room temperature. They store less energy than carbohydrates.
Modeling Macromolecules Group Grade
What type of element is this? A. hydrogen B. carbon C. oxygen D. helium
What are the three types of bonding that can take place with a carbon atom? A. single B. single, double C. single, double, ring D. single, double, ring and branched.
Which of the following are macromolecules? Carbohydrate Lipids, proteins Proteins, carbohydrate Lipids, carbohydrates, proteins, and nucleic acids
What atom do all four macromolecules have in common? Nitrogen Phosphorus Carbon oxygen
What type of bond is involved in all four macromolecules? A. ionic B. covalent
A monomer is the building block for a _________________. A. compound B. element C. atom D. polymer
This is a monomer for A. carbohydrate B. lipids C. nucleic acids D. proteins
What type of carbohydrate? A. monosaccharide B. disaccharide C. polysaccharide
Which type of macromolecules have fatty acids?
A. saturated B. unsaturated C. polyunsaturated
What type of bond is involved in all four macromolecules? A. ionic B. covalent
A monomer is the building block for a _________________. A. compound B. element C. atom D. polymer
This is a monomer for A. carbohydrate B. lipids C. nucleic acids D. proteins
What type of carbohydrate? A. monosaccharide B. disaccharide C. polysaccharide
Which type of macromolecules have fatty acids?
A. saturated B. unsaturated C. polyunsaturated