QUESTIONS AND ANSWERS 2026
◉ What do carbohydrates do? Answer: provide energy, in the form
of sugars like glucose and fructose, but they also make up structures
like cellulose, which form the cell wall of plant cells
◉ What type of carbohydrate is the most important source of
energy? Answer: mono-, di- and poly-saccharides
◉ What are mono and disaccharides? Answer: polar and soluble in
water
◉ What are polysaccharides? Answer: Macromolecules resulting
from polymerisation (condensation) of sugars and are not soluble in
water
◉ Examples of monosaccharides Answer: ribose, glucose, fructose,
galactose
◉ What forms a disaccharide? Answer: two monosaccharides linked
together by condensation reactions with glycosidic bonds releasing
one H2O molecule
,◉ Alpha glucose structure Answer:
◉ Beta glucose structure Answer:
◉ Examples of Polysaccharides Answer: cellulose, glycogen and
starch
◉ Monomer of Sucrose Answer: glucose and fructose
◉ monomer of maltose Answer: glucose and glucose
◉ monomer of lactose Answer: glucose and galactose
◉ monomer of starch Answer: glucose
◉ monomer of glycogen Answer: glucose
◉ monomer of cellulose Answer: glucose
◉ In animals, what carbohydrate stores energy? Answer: glycogen
, ◉ What jobs do carbohydrates have other than storing energy?
Answer: structural components
◉ What differs the polysaccharides all made up of glucose? Answer:
they differ in the arrangement of glucose molecules and position of
the glycosidic bonds
◉ Starch arrangement Answer: amylopectin branched, amylose
linear
◉ What is galactose? Answer: a sugar in milk
◉ What is fructose? Answer: a sugar found in fruit and honey
◉ Main characteristic of lipids? Answer: little to no affinity to water,
mostly hydrophobic
◉ What are the simple forms of lipids? Answer: fat, oil and wax
◉ What are lipids characteristics in different solvents? Answer: they
are non-polar and insoluble in water, but soluble in organic solvents