1a4 marks
Vitamin A is an essential component of the human diet.
Rice is a staple food in parts of the world where a lot of people have vitamin A deficiency.
Rice contains no β‐carotene or vitamin A.
Cells in the human intestine can convert β‐carotene from the diet to vitamin A.
Some soil bacteria can produce large quantities of β‐carotene.
Describe how genetic engineering could be used to produce rice that contains β‐carotene.
1b4 marks
(b)
(i)
Describe the possible risks of growing genetically modified rice plants.
(3)
(ii)
Suggest how one of these risks could be reduced.
(1)
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