If a concentration of 10 fluorescent molecules per μm2of cell membrane is needed to visualize a cell under the microscope, how many molecules of dye would be needed to visualize a single egg? Enter your answer in scientific notation rounded to two significant figures.

Question

Chemistry

Summer Lambert

19 February, 23:12

If a concentration of 10 fluorescent molecules per μm2of cell membrane is needed to visualize a cell under the microscope, how many molecules of dye would be needed to visualize a single egg? Enter your answer in scientific notation rounded to two significant figures.

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Answers (1)

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Zechariah Bowman · Answer 1

An egg cell has an approximate diameter of 100 μm.

The area of the cell membrane is approximately

A = π (100) ² / 4

A = 7853.98 μm²

Therefore, the amount of dye molecules needed is

10 fluorescent molecules / μm ² (7853.98 μm²)

= 78539.82 molecules of dye