FCI Tutorial 1

What is the minimum value of n in the carbohydrate formula (CH2O)n?

• 2

• 2

• 3

• 4

Calculate the number of possible stereoisomers for a carbohydrate with 2 chiral carbon atoms.

Which of the following statements about carbohydrates is FALSE?

• Monosaccharides can exist in cyclic and acyclic forms.

• All carbohydrates have at least one chiral center.

• The D- and L- configurations are based on the arrangement around the chiral carbon farthest from the carbonyl group.

• Carbohydrates can form glycosidic bonds to create polysaccharides.

What is the primary function of carbohydrates in living organisms?

• Enzyme catalysis

• Structural support

• Genetic information

• Energy storage

What happens to sucrose molecules during crystallisation?

• They break down into glucose and fructose.

• They form highly ordered arrays.

• They become amorphous and disordered.

• They dissolve completely in water.

What causes sucrose to form glassy solid structure?

• Slow cooling of a concentrated sucrose solution

• Rapid cooling of a concentrated sucrose solution

• Heating a concentrated sucrose solution

• Adding water to a crystalline sucrose solid

Under which conditions does alginate form a gel?

• At pH 7 with NaCL salt

• At pH 3 with CaCL2 salt

• At pH 10 with MgCL2 salt

• At pH 5 with KCL salt

Amylopectin swells because of its high water solubility.

• True

• False

The rice with more amylopectin harden faster than the rice with more amylose.

• True

• False

Amylose has higher affinity to bind with iodine than amylopectin.

• True

• False