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- 1. Multiple Choice
Which process is an example of catabolism?
A. Translation of mRNA
B. Replication of DNA
C. Hydrolysis of protein
D. Synthesis of a disaccharide
- 2. Multiple Choice
Which molecule is depicted in the diagram?
A. A saturated fatty acid
B. An unsaturated fatty acid
C. A trans fat
D. A vegetable oil
- 3. Multiple Choice
What distinguishes cellulose from glycogen and starch?
A. Only cellulose is found in plants.
B. Only cellulose is made up of glucose monomers.
C. Cellulose is far more branched than starch and glycogen.
D. Cellulose has a structural role whereas starch and glycogen function in energy storage.
- 4. Multiple Choice
The diagram shows the structure of palmitic acid.The diagram shows the structure of palmitic acid.
What type of fatty acid is palmitic acid?
A. It is monounsaturated.
B. It is polyunsaturated.
C. It is saturated.
D. It is a trans-fatty acid.
- 5. Multiple Choice
The diagram shows a cycle of reactions that occurs in human liver cells.
Which term describes the overall reactions of this cycle?
A. Oxidation
B. Catabolism
C. Condensation
D. Metabolism
- 6. Multiple Choice
Which molecule diagram corresponds to the name?
A. D-ribose
B. Amino Acid
C. Phospholipid
D. Beta D-Glucose
- 7. Multiple Choice
Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is based on DNA sequences and the cladogram on the right is based on comparing protein sequences.
What is the reason that cladograms based on DNA sequences are more reliable predictors of the phylogenetic relationship of species than cladograms based on protein sequences?
A. Amino acids are not as chemically stable as DNA nucleotides.
B. DNA mutates but amino acids do not.
C. Several different triplets of bases can code for the same amino acid.
D. There are 20 different amino acids but only 4 nucleotides
- 8. Multiple Choice
How can the activity of a human amylase enzyme be increased during a laboratory experiment?
A. Adding sugar to the mixture
B. Decreasing the pH from 7 to 3
C. Increasing the temperature from 20 °C to 37 °C
D. Adding water to the mixture
- 9. Multiple Choice
What are the most frequently occurring elements in living organisms?
A. calcium, phosphorus, iron and sodium
B. calcium, sodium, nitrogen and phosphorus
C. carbon, phosphorus, oxygen and nitrogen
D. nitrogen, carbon, oxygen and hydrogen
- 10. Multiple Choice
The image shows the structural formula of a molecule.
What is this molecule?
A. Amino acid
B. Ribose
C. Deoxyribose
D. Lactose
- 11. Multiple Choice
Which molecule can be hydrolyzed?
A. Glycerol
B. Maltose
C. Fructose
D. Galactose
- 12. Multiple Choice
Which types of molecule are shown in the diagrams?
A. amino acid, fatty acid, ribose
B. glucose, amino acid, fatty acid
c. ribose, amino acid, fatty acid
d. fatty acid, glucose, amino acid
- 13. Multiple Choice
Where in the cell do condensation reactions involving amino acids occur?
A. Nucleus
B. Golgi apparatus
C. Ribosomes
D. Lysosome
- 14. Multiple Choice
Which carbon compound produced by living organisms is inorganic?
A. DNA
B. Cellulose
C. Glucose
D. Carbon dioxide
- 15. Multiple Choice
Which of the following chemical elements are part of biochemical molecules in living organisms?
A. nitrogen, sulfur, phosphorus and iron
B. lead, oxygen, carbon and phosphorus
C. helium, carbon, sulfur and nitrogen
D. silicon, helium, oxygen and iron
- 16. Multiple Choice
Which of the following is an organic compound made by all plants?
A. Carbon dioxide
B. DNA
C. Lactose
D. Oxygen
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