Proteins and the chemistry of cooking test questions

1

Which molecule does not contain a carbonyl group?

2

What is the name of this molecule?

A carbon atom with three hydrogens joined to a carbon with two hydrogens is single-bonded to a carbon atom which is double-bonded to an oxygen and single-bonded to a carbon with three hydrogens.

3

Which group of compounds does this molecule belong to?

A carbon atom which is double-bonded to an oxygen and single-bonded to a butyl group and a single hydrogen.

4

Which of the following could be used to tell the difference between an aldehyde and a ketone?

5

What colour change will be observed when propanal is warmed with Fehling's solution?

6

Which chemical change happens to proteins in meat as it is being cooked?

7

Which elements are present in proteins?

8

Which type of reaction occurs when proteins are formed?

9

What is the name of this functional group found in proteins?

Hydrocarbon chain R1 is single-bonded to carbon. Carbon is double-bonded to an oxygen, and single-bonded to a nitrogen. The nitrogen is single-bonded to a hydrogen and a second hydrocarbon chain R2.

10

Which type of molecule is this?

A generic hydrocarbon chain R with a carboxyl group (C O O H) at one end, and an amine group (NH2) at the other.