From Paper 1: Advanced Biochemistry, Microbiology and Genetics
3(a)4 marks
Describe the lytic cycle of a bacteriophage.
From Paper 1: Advanced Biochemistry, Microbiology and Genetics
3(b)3 marks
Give the function of each of the following in a bacterial cell: plasmid, flagellum, capsule.
From Paper 1: Advanced Biochemistry, Microbiology and Genetics
3(c)3 marks
A bacterium measures 2.5 µm long. In a photograph it measures 50 mm. Calculate the magnification, showing your working.
From Paper 1: Advanced Biochemistry, Microbiology and Genetics
4(a)3 marks
Give three differences between mitosis and meiosis.
From Paper 1: Advanced Biochemistry, Microbiology and Genetics
4(b)3 marks
Describe double fertilisation in a flowering plant.
From Paper 1: Advanced Biochemistry, Microbiology and Genetics
4(c)2 marks
Explain the role of the acrosome reaction.
From Paper 3: General and Practical Principles in Biology
3(a)5 marks
Describe how to prepare and stain a root tip squash to observe stages of mitosis.
From Paper 3: General and Practical Principles in Biology
3(b)3 marks
In a field of view there were 120 cells: 18 in prophase, 6 in metaphase, 4 in anaphase and 2 in telophase. Calculate the mitotic index and suggest why most dividing cells were in prophase.
Score 0 / 26 · 0 of 8 marked
This paper is written by Plasmo in the style of the Edexcel A-Level Biology exam. It is not a past paper and is not produced or endorsed by the exam board.
Cells, viruses and reproduction of living things Exam Questions: Edexcel A-Level Biology | Plasmo