PractiseQuestion bank
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12 questions
SA-AB-MI-0111 markL1 FoundationCalculatorMicroscope types
The resolution of a light microscope is about
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0012 marksL2 StandardCalculatorMagnification
An image 36 mm long shows a cell that is actually 12 µm long. Calculate the magnification.
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0022 marksL2 StandardCalculatorMagnification
A mitochondrion's image is 20 mm long at ×4000. Calculate its actual length (µm).
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0032 marksL2 StandardCalculatorGraticule
10 stage micrometer divisions (each 10 µm) line up with 40 eyepiece units. What is one eyepiece unit (µm)?
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0041 markL2 StandardCalculatorGraticule
Using 1 EPU = 2.5 µm, a cell measures 18 EPU. Its length (µm)?
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0051 markL2 StandardCalculatorMicroscope types
Electron microscopes have higher resolution because
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0061 markL2 StandardCalculatorMicroscope types
Which microscope gives a 3D image of a specimen's surface?
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0071 markL2 StandardCalculatorMicroscope types
A limitation of electron microscopes is that
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0081 markL2 StandardCalculatorMicroscope types
Tissue for cell fractionation is kept in ice-cold, isotonic, buffered solution. Isotonic prevents
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0091 markL2 StandardCalculatorMicroscope types
In differential centrifugation, the first organelles to form a pellet are
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0101 markL2 StandardCalculatorMagnification
Convert 0.45 mm into µm.
Salam Academy Original Practice · Proposed mark scheme
SA-AB-MI-0121 markL2 StandardCalculatorGraticule
The eyepiece graticule must be recalibrated when
Salam Academy Original Practice · Proposed mark scheme