Understanding Glucose Structure

What is the molecular formula of glucose?

• C6H10O6

• C6H12O5

• C6H12O6

• C5H10O5

Describe the structural formula of glucose.

• C6H10O5; linear form: HOCH2-(CHOH)3-CHO; cyclic form: a five-membered ring

• C6H12O7; linear form: HOCH2-(CHOH)5-CHO; cyclic form: a seven-membered ring

• C5H10O5

• C6H12O6; linear form: HOCH2-(CHOH)4-CHO; cyclic form: a six-membered ring with hydroxyl groups.

How many carbon atoms are present in a glucose molecule?

• 5

• 8

• 6

• 10

What type of isomerism is exhibited by glucose?

• Glucose exhibits only functional isomerism.

• Glucose exhibits only tautomeric isomerism.

• Glucose exhibits both structural isomerism and stereoisomerism.

• Glucose exhibits only geometric isomerism.

What is the significance of the hydroxyl groups in glucose?

• Hydroxyl groups make glucose less soluble in water.

• The hydroxyl groups in glucose enhance its solubility in water and enable its reactivity in biochemical processes.

• Hydroxyl groups decrease glucose's reactivity in chemical reactions.

• Hydroxyl groups in glucose are responsible for its color.

Explain the difference between alpha and beta glucose.

• Alpha glucose has a -OH group above the ring, while beta glucose has it below.

• Alpha glucose is a monosaccharide, while beta glucose is a disaccharide.

• Alpha glucose has the -OH group below the ring, while beta glucose has it above.

• Alpha glucose is a type of starch, while beta glucose is a type of cellulose.

What is the common name for D-glucose?

• Sucrose

• Galactose

• Fructose

• Glucose

How does the cyclic structure of glucose form?

• The cyclic structure of glucose forms when the carboxyl group at C1 reacts with the hydroxyl group at C6.

• The cyclic structure of glucose forms through the reaction of the ketone group at C2 with the hydroxyl group at C4.

• The cyclic structure of glucose forms by the interaction of the aldehyde group at C1 with the hydroxyl group at C2.

• The cyclic structure of glucose forms through the reaction of the aldehyde group at C1 with the hydroxyl group at C5.

What role does glucose play in cellular respiration?

• Glucose is a key substrate that provides energy through cellular respiration.

• Glucose is only used in photosynthesis.

• Glucose has no role in energy production.

• Glucose is a waste product of cellular respiration.

Identify the functional groups present in glucose.

• Ester groups (-COO-) and a phenyl group (-C6H5)

• Amino groups (-NH2) and a hydroxyl group (-OH)

• Carboxyl groups (-COOH) and a ketone group (-C=O)

• Hydroxyl groups (-OH) and an aldehyde group (-CHO)