Name: ______________________________________ Period: __________________
ORGANIC COMPOUNDS REVIEW
1. What are the basic building blocks that make up proteins?
a. nucleic acids
b. peptide bonds
c. amino acids
d. fatty acids
2. What is always found in organic compounds?
a. calcium
b. carbon
d. sulfur
c. glucose
3. Enzymes affect the reactions in living cells by changing the ____________.
a. products of the reaction
c. temperature of the reaction
b. speed of the rate of the reaction
d. pH of the reaction
4. Fats, oils, and waxes are classified as ___________.
a. proteins
b. carbohydrates
c. amino acids
d. lipids
5. DNA and RNA are examples of ___________.
a. proteins
b. enzymes
c. amino acids
d. nucleic acids
Amount of Product
6. At which temperature does the enzyme shown in the graph below function BEST at?
a. 10-20 degrees
c. 35-45 degrees
b. 20-30 degrees
d. 60-70 degrees
40
35
30
25
20
15
10
5
0
Enzyme A
0
20
40
60
80
Temperature (degrees)
7. Muscles, hair, and nails are all made up of __________.
a. lipids
b. proteins
c. carbohydrates
8. Which of the following is a function of proteins?
a. Store and transmit genes
b. provide immediate energy to cells
d. inorganic compounds
c. store energy
d. build tissues such as muscle
9. The four most abundant elements in living things are ___________.
a. hydrogen, nitrogen, lead, calcium
c. phosphorus, sulfur, calcium, carbon
b. nitrogen, hydrogen, oxygen, carbon
d. sulfur, hydrogen, oxygen, calcium
10. The most important inorganic compound in living things is ___________.
a. lipids
b. water
c. carbohydrates
d. protein
11. The amount of energy needed to cause a chemical reaction to start is called activation
energy.
a. TRUE
b. FALSE
12. Biochemical substances in the human body are maintained at about a neutral pH EXCEPT for
a. blood
b. stomach juices
c. spinal fluid
13. A monosaccharide is the monomer for which macromolecule?
a. carbohydrate
b. lipid
c. nucleic acid
d. protein
14. A substance that accelerates the rate of biological chemical reactions is called a(an)
A. substrate
b. molecule
c. enzyme
d. element
15. Water is an example of an organic compound.
a. TRUE
b. FALSE
16. What are the basic building blocks that make up nucleic acids?
a. nucleotides
b. peptide bonds
c. amino acids
17. Which of the following are the monomers for proteins?
a. nucleotides
b. polysaccharides c. DNA/RNA
d. glycerol & fatty acids
d. amino acids e. monosaccharides
18. Which of the following are the polymers of carbohydrates?
a. polypeptides
c. fatty acids
d. monosaccharides
e. polysaccharides
19. Examples of ________________ are fish, eggs, and steak.
a. lipids
b. proteins
c. carbohydrates
d. inorganic compounds
20. Which organic molecule would MOST likely be found as a primary component of a cell
membrane?
a. lipid
b. protein
c. carbohydrate
d. nucleic acid
21. Which element is found in proteins but not carbohydrates or lipids?
a. C
c. N
b. H
d. O
22. In humans and other multicelluar organisms, which substance plays a central role as an
immediate energy source?
a. carbohydrate
c. protein
b. fat
d. water
23. Lactose is to sugar as lactase is to ____________.
a. nucleotide
c. enzyme
b. starch
d. lipid
Matching
27A
24 B
25C
26.E
a. products
b. substrate
c. active site
e. enzyme
30. What are the monomers for lipids?
a. amino acids
b. triglycerides
c. fatty acids
d. nucleic acids
31. There are two types of lipids, saturated and unsaturated. Choose the right sequence:
a. has a bend in the molecule, single bonds between carbons, good fats
b. does not have a bend in the molecule, double bonds between carbons, bad fats
c. has a bend in the molecule, double bonds between carbons, good fats
d. has a bend in the molecule, double bonds between carbons, bad fats
32. The common name for lipids is __________, and for carbohydrates is __________.
a. sugars, fats
b. fats, sugars
c. fatty acids, sugars
d. saccharides, nucleotide
33. Fats store energy while sugars provide immediate energy for consumption by cells.
a. TRUE
b. FALSE
34. SHORT ANSWER QUESTION (10 POINTS)
Describe the “lock and key” structure of enzymes and their substrates. You may use a drawing
to help you explain but you must EXPLAIN with words in order to get credit.
The lock and key model explain how enzymes have specific substrates, or molecules they bind
to. Like a key fits a specific lock.
35. How does an enzyme increase the rate of a reaction? Graph a chemical reaction catalyzed
by an enzyme and indicate: reactants, energy of activation, products (10 Points)
An enzyme increases the rate of a reaction by lowering the reaction’s energy of activation.