Question
A student was told that a drawing of a bacterial cell had been magnified 30 000 times. The length
of the drawing was 45 mm.
What was the actual length of the bacterium?
A 0.15 mm B 1.5µm C 0.66 mm D 0.66µm
Answer/Explanation
Ans
B
Question
The actual thickness of the leaf shown in the diagram is 2000 μm, but its thickness in the diagram
is 50 mm.
What is the magnification of the diagram?
A ×0.025 B ×25 C ×100 D ×100 000
Answer/Explanation
Ans: B
Question
The diagram shows a mitochondrion. The scale bar shows the actual size of the mitochondrion.
The diagram is 70 mm long.
What is the magnification of the diagram?
A ×0.0007 B ×70 C ×7000 D ×70 000
Answer/Explanation
Ans
D
Question
The diagram shows a fly.
The line XY represents the length of the wing.
The length of line XY is 26 mm.
The actual size of the wing between XY is 4 mm.
What is the magnification of the image?
A ×0.15 B ×6.5 C ×22 D ×104
Answer/Explanation
Ans: B
Question
The diagrams show different levels of organisation in a plant. (Not drawn to scale.)
Which sequence shows the levels of organisation in order from smallest to largest?
A 4 → 2 → 3 → 1
B 4 → 3 → 1 → 2
C 3 → 4 → 2 → 1
D 3 → 2 → 1 → 4
Answer/Explanation
Ans: A