Biological Molecules Question (Alevelbiology)

Edexcel B A-Level Biology


Topic 1


Biological
Molecules


EXAM
QUESTIONS
BOOKLET
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, 1.
Use this booklet to revise for exams
and improve exam technique.
Ensure you identify areas of strength
and weakness near exam time to
make your revision effective, and use
the revision notes to fill in any gaps




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, 1. Maltose and sucrose are disaccharide sugars in which a bond joins two
monosaccharide molecules. Sucrose is formed by the formation of a bond between
carbon 1 of a glucose molecule and carbon 2 of a fructose molecule.

(i) Name the bond that joins the two molecules to form a disaccharide.

.....................................................................................................................................

[1]

(ii) Complete the diagram below to show what happens when the glucose and
fructose molecules join together.




[2]

[Total 3 marks]




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