CHEM 120 Week 7 Quiz Assignment
Week 7 Assignment: 30 points:
MC/Select all that apply: 1 point each
1. Which of the following are examples of proteins? Select all that apply.
A) Antibodies
B) DNA
C) Enzy
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CHEM 120 Week 7 Quiz Assignment
Week 7 Assignment: 30 points:
MC/Select all that apply: 1 point each
1. Which of the following are examples of proteins? Select all that apply.
A) Antibodies
B) DNA
C) Enzymes
D) RNA
E) Hemoglobin
2. You find a mRNA fragment reads in part as AAU-UUA-GAU-UAA. The template strand of the DNA that coded for this fragment would read:
A) AAU-UUA-GAU-UAA
B) AAT-TTA-GAT-TAA
C) TTA-AAT-CTA-ATT
D) UUA-AAU-CUA-AUU
3. Choose the carbohydrates that are classified as polysaccharides. More than one answer may be correct.
A) Glucose
B) Galactose
C) Starch
D) Sucrose
E) Amylose
4. Which bio-molecules below is easily broken down by our bodies to form glucose? More than one answer may be correct.
A) Cellulose
B) Protein
C) Starch
D) Lipids
E) Sucrose
5. Your body breaks down glucose molecules to form ATP to power a wide variety of chemical reactions. This process is classified as what?
A) Catabolism
B) Anabolism
C) Addisim
D) Translation
E) Gene Expression
6. Which are ways to deactivate an enzyme? Select all that apply.
A) Blocking of the active site
B) Changing the shape of the active site
C) Increasing the substrate concentration
D) Removal of a cofactor
7. Which of the following is not a part gene expression?
A) Translation
B) Transcription
C) DNA Self Replication
D) Fatty acid synthesis
8. Alcohol dehydrogenase removes the H from Ethanol to form Ethanal. If I exposed Methanol to this enzyme I would expect:
A) No Reaction
B) Methanal to be produced
C) Ethanal to be produced
D) Destruction of the enzyme
9. Which of the following base pairs is not possible?
A) A-U
B) G-C
C) C-T
D) T-A
10. Which of the biomolecules below is not involved in the expression of a gene?
A) Fatty Acids
B) DNA
C) RNA
D) Enzymes
11. Which of the following molecules participate in the formation of a fatty ester? More than one answer may be correct.
A) Fatty Acids
B) Sucrose
C) Amino Acids
D) Glycerol
12. Suddenly, all of the DNA in your body disappears. Which process/systems would be the first to be effected?
A) Immune system
B) Protein synthesis
C) Nervous system
D) Fat synthesis
13. Select all biomolecules that are part of the transcription process: (more than one answer may be correct)
A) DNA
B) mRNA
C) tRNA
D) Glucose
14. A fragment of the coding strand of DNA reads in part as TAC-CGA-GAC-TAG. The complimentary code on the template strand of the DNA formed during DNA replication would read:
A) TAU-CGA-GAC-UAG
B) ATG-GCT-CTG-ATC
C) TAC-CGA-GAC-TAG
D) UAC-CGA-GAC-UAG
Short answer. Point values as marked.
15. What is the difference between anabolism and metabolism? (2 point)
Anabolism is a type of metabolic phase where it builds the molecules the body needs (for energy consumption)
Metabolism is anabolism and catabolism together.
16. Label each of the following as a monosaccharide, a disaccharide, or a polysaccharide: (0.5 points, 3 points total)
a. Lactose – Disaccharide
b. Glucose – monosaccharide
c. Cellulose – polysaccharide
d. Sucrose – Disaccharide
e. Starch – polysaccharide
f. Fructose – polysaccharide
17. Identify each of these fatty acids as saturated, monounsaturated, or polyunsaturated: (0.5 point each, 2 points total)
CH3CH2CH2CHCHCH2COOH – polyunsaturated CH3CH2CH2CH2COOH - monosaturated
18. Complete the table below. (1 point for each row, 4 points total)
Biomolecule Key function(s) in body Building blocks of this biomolecule class
Carbohydrates Provides energy, protein sparing action, normal fat metabolism,
provides fiber Carbon, hydrogen, and oxygen
Lipids Precursors of hormones, aid in digestion, store energy, fuel for metabolism, parts for cell
membrane Glycerol and at least one fatty acid
Proteins Repair/development of tissue, energy, creation of hormones,
produce enzymes Amino acids
Nucleic acids Makes up structures for DNA RNA, m-RNA, t-RNA, r-RNA Sugars, phosphate groups, nitrogen base
19. What are the steps of gene expression? (2 points)
i. Initiation
ii. Elongation
iii. Termination
iv. Post translation processing of the protein
20. Given the Coding strand of DNA: ATG AAT ATG CCT GAG TTA ( 3 points)
a. Give the code of the Anticoding(template) strand. TACTTATACGGTCTCAAT
b. Give the code of the mRNA coded from this sequence. AUGAAUAUGCCAGAGUUA
c. Give the polypeptide sequence using the table in your text. Met-asn-met-pro-glu-lue
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