A Q18 A Increasing milk in dairy cattle 1 B Industrial melanism in Peppered moths C Insulin production by bacteria D Insertion of DNA into a bacterium Question Acceptable Answer 18 D Int 2 The diagram below represents a potato cell. 2011 B Q1(b) (b) Name the enzyme involved in the synthesis of starch in potato cells. Question Acceptable Answer 1(b) (potato/starch) phosphorylase Int 2 Enzymes are biological catalysts. The diagram below shows part of an enzyme Marks 2011 controlled reaction. B Q4 (a) Describe the features of an enzyme which allow it to combine with 2 only one substrate.
A Q18 A Increasing milk in dairy cattle B Industrial melanism in Peppered moths C Insulin production by bacteria D Insertion of DNA into a bacterium 1 Question Acceptable Answer 18 D Int 2 2011 B Q1(b) The diagram below represents a potato cell. (b) Name the enzyme involved in the synthesis of starch in potato cells. Question Acceptable Answer 1(b) (potato/starch) phosphorylase Int 2 2011 B Q4 Enzymes are biological catalysts. The diagram below shows part of an enzyme controlled reaction. Marks (a) Describe the features of an enzyme which allow it to combine with only one substrate. 2
Biology-N5-Past-Paper-Questions-Cell-Biology1.docx