Biology · Chemistry

Carbohydrates and Biomolecules

1,073 Questions

Carbohydrates and biomolecules questions test your understanding of sugars, monosaccharides, and metabolic substrates. The topic covers food transportation in plants and the biochemical properties of sweeteners. Practicing these questions builds a strong foundation for exam preparation.

Disaccharides and monosaccharidesArtificial sweetenersGlycogen storagePlant food transportGlycoprotein hormones

Carbohydrates and Biomolecules Questions

Multiple choice

Glucose, galactose and fructose all have the same molecular size and composition. How does their absorption take place?

  1. At the same rate.

  2. Glucose is absorbed most rapidly.

  3. Fructose is absorbed most rapidly.

  4. Galactose is absorbed most rapidly.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Absorption rates of monosaccharides differ; galactose and glucose are absorbed via active transport (SGLT1), with galactose typically showing the fastest rate of absorption in the small intestine.

Multiple choice

________ is/are absorbed by active transport.

  1. Glucose

  2. Amino acids

  3. Ions

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the proximal convoluted tubule of the nephron, glucose, amino acids, and various ions are reabsorbed from the filtrate back into the blood via active transport.

Multiple choice

What happens to glucose during strenuous exercise?

  1. It is converted to glycogen.

  2. It is converted to pyruvic acid.

  3. It is converted to starch.

  4. It is converted to lactic acid.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Glucose is converted to lactic acid during strenuous exercise.

Multiple choice

What type of sugar is hemicellulose?

  1. It is a polysaccharide present in cell wall of leaves and petals of all plants.

  2. It is a disaccharide and is present in the cytoplasm of all plant cells.

  3. It is a polysaccharide present in cell wall of seeds and endosperm of certain plants.

  4. It is a disaccharide and is present in nucleoplasm of all plant cells.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is present in the cell wall of seeds of date and endosperm of areca nuts.