Download Chapter 3 Test Biochemistry Answer Section

Chapter 3 Test Biochemistry
1. Which organic molecule below is most closely
related to proteins?
a. CH2 chains
b. amino acids
c. sugars
d. nucleotides
2. Which organic molecule below is classified as a
carbohydrate?
a. amino acid
b. CH2 chain
c. nucleotide
d. sugar
3. What is ADP and ATP?
a. condensation
b. energy
c. sugar
d. polymerization
4. A neutral atom of Na starts out with 11 (positive)
protons and 11(negative) electrons. In order to
make an ionic bond Na gives away an electron on
its outershell. Na is now
a. gone
b. positive
c. negative
d. neutral
5. All organic compounds contain the element
a. C.
b. Na.
c. N.
d. Ca.
6. Polysaccharides are
a. carbohydrates.
b. lipids.
c. unsaturated fats.
d. proteins.
7. Which organic molecule below is most closely
related to nucleic acids?
13.
a.
b.
c.
d.
CH2 chains
amino acids
sugars
nucleotides
8. Without enzymes, the chemical reactions in the
body would
a. happen too fast.
b. require a different pH.
c. occur too slowly to support life processes.
d. occur at much the same rate as they do with
enzymes.
9. Carbon is different from many other elements in
that
a. it has four electrons in its outermost energy
level.
b. it can form single, double, or triple bonds with
other atoms.
c. it readily bonds with other carbon atoms.
d. All of the above
10. Which of the following is a carbohydrate?
a. sucrose
b. wax
c. DNA
d. insulin
11. Which organic molecule below is most closely
related to lipids?
a. sugars
b. nucleotides
c. fatty acids
d. amino acids
12. Carbon atoms can bond together to form all of the
following except
a. branched structures.
b. straight chain structures.
c. inorganic structures.
d. ring structures.
Molecule 2 is a
a. protein
b. nucleic acid
14. Nucleic acids include
a. glucose and glycogen.
b. DNA and RNA.
c. lipids and sugars.
d. chlorophyll and retinal.
c. lipid
d. carbohydrate
What are the identities of the macromolecules
present in the four test tubes? Write your answer in
the space below. 4 points
Test Tube 1 =
Test Tube 2 =
Test Tube 3 =
Test Tube 4 =
15. All of the following are examples of carbohydrates
except
a. steroids.
b. glycogen.
c. cellulose.
d. sugar.
16. What atomic particles are found on the outside of
atoms? These particles control how atoms bond
with each other.
a. neutrons
b. electrons
c. protons
d. quarks
17. You are given four test tubes containing purified
biological macromolecules. The test tubes are
unlabeled except for a number between 1 and 4.
You are told that one test tube contains a protein,
one contains a lipid, one contains a carbohydrate,
and one contains a nucleic acid. You then perform
some tests on the macromolecules and collect the
following information:
1) Test tubes #2 and #4 contain nitrogen, but the
other tubes do not.
2) The contents of test tube #3 are not soluble in
water, but the contents of the other test tubes
are soluble in water.
3) The contents of test tube #1 can be broken
down into subunits that are all exactly identical
to each other.
4) The macromolecule in test tube #2 is found to
have a globular shape.
18.
The energy molecule above is
a. amino acid
b. protein
c. ATP
d. nucleic acid
19. In an atom protons are found in the nucleus along
with neutrons. Protons are
a. positive particles
b. not found in atoms
c. neutral particles
d. negative particles
20. Animals store glucose in the form of
a. cellulose.
b. wax.
c. glycogen.
d. lipids.
21. Compare a covalent bond with an ionic bond.
Contrast an ionic bond with a covalent bond. 2
points
|
----------------------|-------------------------|
|
|
|
22. Long chains of amino acids are found in
a. sugars.
b. lipids.
c. proteins.
24.
d. carbohydrates.
23. Amino acids are monomers of
a. steroids.
b. proteins.
c. nucleotides.
d. disaccharides.
Molecule 1 is
a. glucose.
c. ATP
b. proteins.
d. nucleic acids.
25. A non polar molecule does not combine with water.
Vegetable oil and olive oil are examples of lipids
what do not combine with water. Lipids are
a. polar molecules.
b. protein molecules.
c. similar to water molecules.
d. nonpolar molecules.
26. All of the following are examples of lipids except
a. saturated fats.
b. olive oil
c. starch.
d. vegetable oil
Chapter 3 Test Biochemistry
Answer Section
1. ANS: B
PTS: 1
STA: LS.1 | LS.11
2. ANS: D
PTS: 1
STA: LS.1 | LS.11
3. ANS: B
PTS: 1
STA: LS.5
4. ANS: B
PTS: 1
5. ANS: A
PTS: 1
STA: LS.11
6. ANS: A
PTS: 1
STA: LS.1 | LS.11
7. ANS: D
PTS: 1
STA: LS.5
8. ANS: C
PTS: 1
STA: LS.1 | LS.11
9. ANS: D
PTS: 1
STA: LS.11
10. ANS: A
PTS: 1
STA: LS.1 | LS.11
11. ANS: C
PTS: 1
STA: LS.1 | LS.11
12. ANS: C
PTS: 1
STA: LS.11
13. ANS: B
PTS: 1
14. ANS: B
PTS: 1
STA: LS.5
15. ANS: A
PTS: 1
STA: LS.1 | LS.11
16. ANS: B
PTS: 1
17. ANS:
Test tube #1 contains a carbohydrate.
Test tube #2 contains a protein.
Test tube #3 contains a lipid.
Test tube #4 contains a nucleic acid.
DIF: 1
OBJ: 3-2.2
DIF: 1
OBJ: 3-2.1
DIF: 2
OBJ: 3-1.4
DIF: 1
OBJ: 3-1.1
DIF: 1
OBJ: 3-2.1
DIF: 1
OBJ: 3-2.5
DIF: 1
OBJ: 3-2.3
DIF: 2
OBJ: 3-1.2
DIF: 1
OBJ: 3-2.1
DIF: 2
OBJ: 3-2.4
DIF: 2
OBJ: 3-1.1
DIF: 1
OBJ: 3-2.5
DIF: 1
OBJ: 3-2.1
PTS: 1
18. ANS: C
19. ANS: A
20. ANS: C
STA: LS.1 | LS.11
21. ANS:
a
OBJ: 3-2.2
STA: LS.1 | LS.11
DIF: 1
OBJ: 3-2.1
DIF: 1
OBJ: 3-2.2
PTS: 1
22. ANS: C
DIF:
PTS:
PTS:
PTS:
2
1
1
1
PTS: 1
STA:
23. ANS:
STA:
24. ANS:
STA:
25. ANS:
STA:
26. ANS:
STA:
LS.1 | LS.11
B
LS.1 | LS.11
A
LS.1 | LS.11
D
LS.1 | LS.11
C
LS.1 | LS.11
PTS: 1
DIF: 1
OBJ: 3-2.2
PTS: 1
DIF: 2
OBJ: 3-2.4
PTS: 1
DIF: 1
OBJ: 3-2.4
PTS: 1
DIF: 1
OBJ: 3-2.4