Question

an onion cell is 2 micrometers long. how many are needed to line up end to end across a microscope slide 8 centimeters in diameter?

Answer 1

Hi there! 40,000 onions cells are needed. Let's do the math: 8 centimeters is 80,000 micrometers. Divide this by 2 and you get 40,000! Hopes this helps!

Answer 2

Answer: The number of onion cells that are needed to line up end to end are 40,000

Explanation:

We are given:

Length of microscopic slide = 8 cm

Length of 1 onion cell = $2\mu m=2\times 10^{-4}cm$   (Conversion factor: $1cm=10^4\mu m$ )

To calculate the number of onion cells required, we divide the length of microscopic slide to the length of 1 onion cell, we get:

$\text{Number of onion cells}=\frac{\text{Length of microscopic slide}}{\text{Length of 1 onion cell}}$

$\text{Number of onion cells}=\frac{8cm}{2\times 10^{-4}cm}=40000$

Hence, the number of onion cells that are needed to line up end to end are 40,000