1. In the carbon cycle, glucose and oxygen are converted to carbon dioxide and w
ID: 73299 • Letter: 1
Question
1. In the carbon cycle, glucose and oxygen are converted to carbon dioxide and water by
A). large animals.
B). insects.
C). mushrooms.
D). green plants.
E). earthworms.
2. A carbohydrate that cannot be hydrolyzed is known as a
A). monosaccharide.
B). disaccharide.
C). polysaccharide.
D). starch.
E). trisaccharide.
3. Ribulose has the following structural formula. To what carbohydrate class does ribulose
belong?
A). aldotetrose
B). aldopentose
C). ketotetrose
D). ketopentose
E). ketohexose
4. Which substance would be classified as an aldohexose?
A B C D
5. Which substances have an enantiomer with a L-configuration?
A B C D
A). A and C B). B and C
C). B and C D). A, B and D
1. In the carbon cycle, glucose and oxygen are converted to carbon dioxide and water by
A). large animals.
B). insects.
C). mushrooms.
D). green plants.
E). earthworms.
2. A carbohydrate that cannot be hydrolyzed is known as a
A). monosaccharide.
B). disaccharide.
C). polysaccharide.
D). starch.
E). trisaccharide.
3. Ribulose has the following structural formula. To what carbohydrate class does ribulose
belong?
A). aldotetrose
B). aldopentose
C). ketotetrose
D). ketopentose
E). ketohexose
4. Which substance would be classified as an aldohexose?
A B C D
5. Which substances have an enantiomer with a L-configuration?
A B C D
A). A and C B). B and C
C). B and C D). A, B and D
6. Select the correct name for the Haworth structure of a monosaccharide:
7. Approximately what percentage of plant starch is amylose?
A). 10 to 15%
B). 20 to 25%
C). 75 to 80%
D). 85 to 90%
8. Which of the following is obtained as a result of the complete hydrolysis of starch?
A). D-glucose
B). lactose
C). maltose
D). sucrose
Match the best answers for the following reactions. (Each correct answer is 1 point)
A) D-gluconic acid
B) D-glucitol
C) D-glucose + CU2+
9. The oxidation of D-glucose by a Benedict’s solution produces ______
10. The reduction of D-glucose produces _____, which are used as sweeteners in many sugar-free
products.
Match the best answers for the following sugars.
A) glucose
B) glucose and fructose
C) glucose and galactose
11. Sucrose is composed of ______.
12. Starch is composed of _______.
Match the correct statement for the following polysaccharides.
13. Amylose ____
14. Cellulose ____
A). makes up 80% of plant starch and is a branched-chain polysaccharide.
B). makes up 20% of plan starch and is an unbranched-chain polysaccharides.
C). is the major structural material of wood and plants.
D). is also called animal starch. It is stored in the liver and muscles of animals,
maintains the blood sugar and provides energy between meals.
Explanation / Answer
1. A. Large animals
In the carbon cycle, glucose and oxygen are converted to carbon dioxide and water by large animals because they cannot synthesize food. They gain energy by the metabolism of glucose in the presence of oxygen.
2. A. Monosaccharide
A carbohydrate that cannot be hydrolysed is known as a monosaccharide. Monosaccharides contain only one sugar molecule, which cannot be hydrolysed into smaller molecules.
3. D). ketopentose
Ribulose is a monosaccharide with five carbon atoms with a ketone functional group.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.