CAIE A-Level Biology AS 6.2.1 Gene Questions
Explain gene structure and function using evidence from each question and its mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Explain what a gene is and how genes encode polypeptides and functional products.
CAIE A-Level Biology AS 6.2.1 Gene Questions question 1
[Maximum number: 2]
Starch molecules are the main storage molecules in many types of cereal grain, such as the grain of the barley plant.
When the seed inside a barley grain germinates, genes coding for digestive enzymes are switched on. The enzymes that are synthesised catalyse the hydrolysis of storage molecules such as proteins and starch.
Explain what is meant by a gene.
sequence of nucleotides or length / section / AW, of DNA ;
A bases for nucleotides (a gene can) code for a polypeptide ;
A protein for polypeptide
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