The diagram below represents the sizes of two different structures: a mitochondrion and a human cheek cell.
- Mitochondrion length: 2.5 μm2.5\text{ }\mu\text{m}2.5 μm
- Cheek cell diameter: 0.06 mm
a.[3]
Calculate the ratio of the size of the mitochondrion to the size of the cheek cell in the form 1:n1 : n1:n.
b.[2]
A cell cycle is represented by a pie chart divided into 25 equal sectors.
- Stage 1 (Interphase) occupies 17 sectors.
- Stage 2 (Mitosis) occupies 5 sectors.
- Stage 3 (Cytokinesis) occupies 3 sectors.
Calculate the percentage of the total time of one cell cycle represented by Stage 2 and Stage 3 together.