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Questions and Answers
What is the main function of starch in plants?
What is the main function of starch in plants?
- Cell wall synthesis
- Structural support
- Energy storage (correct)
- Enzyme activation
Which type of bond joins the glucose units in amylose?
Which type of bond joins the glucose units in amylose?
- α-1,4-glycosidic bond (correct)
- β-1,4-glycosidic bond
- Peptide bond
- α-1,6-glycosidic bond
What is the approximate ratio of amylose to amylopectin in most starches?
What is the approximate ratio of amylose to amylopectin in most starches?
- 75:25
- 20:80 (correct)
- 30:70
- 50:50
Which polysaccharide constitutes almost half of the cell-wall material of wood?
Which polysaccharide constitutes almost half of the cell-wall material of wood?
What type of bond joins the glucose units in cellulose?
What type of bond joins the glucose units in cellulose?
In which cells is glycogen primarily stored in the body of a well-nourished adult human?
In which cells is glycogen primarily stored in the body of a well-nourished adult human?
What gives identity to an amino acid?
What gives identity to an amino acid?
Which type of amino acid has an additional carboxyl group?
Which type of amino acid has an additional carboxyl group?
What is the configuration of the vast majority of α-amino acids at the α-carbon?
What is the configuration of the vast majority of α-amino acids at the α-carbon?
Which amino acid is achiral and does not have a stereocenter?
Which amino acid is achiral and does not have a stereocenter?
In which form are amino acids properly written, indicating their charges?
In which form are amino acids properly written, indicating their charges?
Proline is considered a __________ amino acid because it does not follow the formula for a primary amino acid.
Proline is considered a __________ amino acid because it does not follow the formula for a primary amino acid.
What is the function of a cofactor in an enzyme?
What is the function of a cofactor in an enzyme?
What is the Apoenzyme part of an enzyme composed of?
What is the Apoenzyme part of an enzyme composed of?
What happens when enzyme concentration increases according to Loyola’s statement?
What happens when enzyme concentration increases according to Loyola’s statement?
What occurs when the optimal temperature for an enzyme-catalyzed reaction is exceeded?
What occurs when the optimal temperature for an enzyme-catalyzed reaction is exceeded?
Which part of the enzyme is responsible for binding with the substrate during a reaction?
Which part of the enzyme is responsible for binding with the substrate during a reaction?
What effect does pH have on the rate of an enzyme-catalyzed reaction?
What effect does pH have on the rate of an enzyme-catalyzed reaction?
What is the typical range of carbon atoms found in fatty acids?
What is the typical range of carbon atoms found in fatty acids?
Which of the following fatty acids is considered rare due to its trans isomer predominance?
Which of the following fatty acids is considered rare due to its trans isomer predominance?
Why do unsaturated fatty acids generally have lower melting points compared to saturated fatty acids?
Why do unsaturated fatty acids generally have lower melting points compared to saturated fatty acids?
What type of compounds are triglycerides and what are they composed of?
What type of compounds are triglycerides and what are they composed of?
Why are only even-numbered fatty acids found in triglycerides?
Why are only even-numbered fatty acids found in triglycerides?
Why are triglycerides considered the most common lipid materials?
Why are triglycerides considered the most common lipid materials?
What happens when a strong acid is added to an amino acid zwitterion?
What happens when a strong acid is added to an amino acid zwitterion?
At low pH, what is the protonation status of the amino and carboxyl groups in an amino acid?
At low pH, what is the protonation status of the amino and carboxyl groups in an amino acid?
What is the acidic form of an amino acid zwitterion at high pH?
What is the acidic form of an amino acid zwitterion at high pH?
What defines the isoelectric point of an amino acid?
What defines the isoelectric point of an amino acid?
What happens when a strong base is added to an amino acid zwitterion?
What happens when a strong base is added to an amino acid zwitterion?
What do low and high pH values correspond to in terms of the protonation status of an amino acid?
What do low and high pH values correspond to in terms of the protonation status of an amino acid?
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