Microscopy Flashcards
(11 cards)
What is the equation for magnification?
Magnification = Image size ÷ Object size
How would you rearrange the equation for magnification to find image size?
Image size = Object size x Magnification
How would you rearrange the equation for magnification to find object size?
Object size = Image size ÷ Magnification
What is the lens by the eye called?
Eyepiece lens.
What are the lenses by the stage called?
Objective lenses.
A plant cell in a photograph measures 40 mm in width. If the real width of the plant cell is actually 0.02 mm, what is the magnification?
2000x.
The nucleus in a photograph of a cell measures 1.5 mm across. If the magnification in the photograph is × 500, what is the actual size of the nucleus?
(Answer in mm)
0.003mm
Elouise finds a woodlouse that is 8 mm long. When she views it under the microscope it appears 12 cm long.
15x.
A sperm cell is 5 μm long. How long will it appear when viewed under a microscope with a magnifying power of x1500?
(Answer in mm)
7.5mm.
A scientist observed a skin cell using an electron microscope. The size of the image was 25 mm, and the magnification was × 100,000.
Calculate the real size of the cell.
(Answer in nm)
250nm.
A human egg cell is roughly 100 μm wide. How large would it appear when viewed under a microscope at x 60 magnification?
(Answer in cm)
0.6cm.
