Cell Microscopy (Magnification Calculation1)

If the objective lens has a magnification of 4x and the eyepiece lens has a magnification of 40x, what is the magnifying power of the microscope?

Calculate the actual size of a mesophyl cell if the its drawing has a length of 350mm and the magnification of the drawing is 700x

• 0.002μm

• 0.02nm

• 0.002nm

• 0.0002μm

If a red blood cell measures 7.5Um in diameter, and a platelet measures 150nm in diameter, what is the ratio of the size of the red blood cell to that of the platelete?

• 0.03:1
• 0.5:1
• 50:1…
• 30:1…

If the nucleus is 650 times bigger than a particular mitochondria, what is the size of this mitochondria (in nm) if the nucleus measures 130Um in diameter

The distance between the tips of two neighbouring sieve tube elements is 120Um. If one element is twice as large as the other, what is the size of the smaller element?

• 40μm

• 60μm

• 120μm

• 20μm

The scale bar on a micropraph reads 32Um and measures 16cm in length. What is the magnification of the micrograph?

The scale bar on a micropraph reads 32Um and measures 1.6cm in length. What is the actual length (in nm) of a mitochondria in the cell that measures 20mm?

The scale bar on a drawing measures 2.5cm and has 10Um written on it. What is the actual diameter of the cell(in Um) if the image diameter reads 4cm

• 625μm

• 6.25μm

• 16μm

• 1.6μm

A micrograph of an animal cell has a magnification of 96,000x written on it. What is the actual size of the nucleolus on the micrograph that measures 2.75cm in diameter?

• 0.286nm

• 0.286μm

• 28.6nm

• 2.86μm

The intermembrane space of a mitochondrion measures 1.25nm in width. What is the magnification of the diagram of that intermembrane space if it measures 0.75mm in width.

• 600x

• 6000x

• 60x

• 60,000x