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Science Concepts
Using Science Graphics
Math Skills

2. 1. The way in which elements bond to form compounds depends on which of the following?
A. the size of the electrons
B. the shape of the nucleus
C. the number of neutrons in each atom
D. the electrons in the atoms of the elements

3. 1. The way in which elements bond to form compounds depends on which of the following?
A. the size of the electrons
B. the shape of the nucleus
C. the number of neutrons in each atom
D. the electrons in the atoms of the elements

4. 2. In what type of bond are electrons shared?
F. ionic
G. nuclear
H. covalent
J. hydrogen

5. 2. In what type of bond are electrons shared?
F. ionic
G. nuclear
H. covalent
J. hydrogen

6. 3. What weak bond holds together the two strands of nucleotides in a DNA molecule?
A. ionic
B. nuclear
C. covalent
D. hydrogen

7. 3. What weak bond holds together the two strands of nucleotides in a DNA molecule?
A. ionic
B. nuclear
C. covalent
D. hydrogen

8. 4. When an unknown substance is dissolved in water, hydronium ions form. What can you conclude about the substance?
F. The substance is a gas.
G. The substance is a base.
H. The substance is an acid.
J. The substance is a carbohydrate.

9. 4. When an unknown substance is dissolved in water, hydronium ions form. What can you conclude about the substance?
F. The substance is a gas.
G. The substance is a base.
H. The substance is an acid.
J. The substance is a carbohydrate.

10. A. ionic bond B. peptide bond C. covalent bond D. hydrogen bond
The diagram shows a type of biomolecule. Use the diagram to answer the following question(s). 5. A bond can form between Group 1 of this type of molecule and Group 3 of another type of this molecule. What is this bond called?
A. ionic bond
B. peptide bond
C. covalent bond
D. hydrogen bond

11. A. ionic bond B. peptide bond C. covalent bond D. hydrogen bond
The diagram shows a type of biomolecule. Use the diagram to answer the following question(s). 5. A bond can form between Group 1 of this type of molecule and Group 3 of another type of this molecule. What is this bond called?
A. ionic bond
B. peptide bond
C. covalent bond
D. hydrogen bond

12. 6. Carboxypeptidase is an enzyme that catalyzes reactions in the small intestine. The products of these reactions are amino acids. What are the substrates of carboxypeptidase?
F. lipids
G. proteins
H. nucleic acids
J. carbohydrates

13. 6. Carboxypeptidase is an enzyme that catalyzes reactions in the small intestine. The products of these reactions are amino acids. What are the substrates of carboxypeptidase?
F. lipids
G. proteins
H. nucleic acids
J. carbohydrates

14. A. chemical energy B. electrical energy C. activation energy
The graph shows the energy in a catalyzed chemical reaction as the reaction progresses. Use the graph to answer the following question(s). 7. The amount of energy needed for this chemical reaction to begin is shown by the line rising from the reactants. What is this energy called?
A. chemical energy
B. electrical energy
C. activation energy
D. mechanical energy

15. A. chemical energy B. electrical energy C. activation energy
The graph shows the energy in a catalyzed chemical reaction as the reaction progresses. Use the graph to answer the following question(s). 7. The amount of energy needed for this chemical reaction to begin is shown by the line rising from the reactants. What is this energy called?
A. chemical energy
B. electrical energy
C. activation energy
D. mechanical energy

16. F. larger than what is shown G. the same as what is shown
The graph shows the energy in a catalyzed chemical reaction as the reaction progresses. Use the graph to answer the following question(s). 8. Suppose that this reaction needs a catalyst to proceed. In the absence of a catalyst, the activation energy would be which of the following?
F. larger than what is shown
G. the same as what is shown
H. smaller than what is shown
J. very similar to what is shown

17. F. larger than what is shown G. the same as what is shown
The graph shows the energy in a catalyzed chemical reaction as the reaction progresses. Use the graph to answer the following question(s). 8. Suppose that this reaction needs a catalyst to proceed. In the absence of a catalyst, the activation energy would be which of the following?
F. larger than what is shown
G. the same as what is shown
H. smaller than what is shown
J. very similar to what is shown

18. 9. Protein A is a chain of 660 amino acids
9. Protein A is a chain of 660 amino acids. Protein B is a chain of 11 amino acids. How many times as many amino acids as Protein B does Protein A have?
A. 6
B. 16
C. 60
D. 66

19. 9. Protein A is a chain of 660 amino acids
9. Protein A is a chain of 660 amino acids. Protein B is a chain of 11 amino acids. How many times as many amino acids as Protein B does Protein A have?
A. 6
B. 16
C. 60
D. 66