Magnifications

Question 1

What unit of measurement is commonly used to express the actual length of a cell?

Answer 1

Micrometers (um)

Question 2

True or False: The length of a cell can be directly measured without any calculations.

Answer 2

False

Question 3

Fill in the blank: To calculate the actual length of a cell, you need to know the __________ and the magnification level.

Answer 3

Image length

Question 4

What is the formula to calculate the actual length of a cell in micrometers?

Answer 4

Actual length (um) = Measured length (mm) ÷magnification×100

Question 5

If a cell measures 2 mm under 400x magnification, what is its actual length in micrometers?

Answer 5

5 um

Question 6

Multiple Choice: Which of the following factors is essential for calculating the actual length of a cell? A) Temperature B) Magnification C) Light intensity

Answer 6

B) Magnification

Question 7

What is the significance of the scale bar in microscopy?

Answer 7

It provides a reference for measuring the actual length of cells.

Question 8

True or False: The actual length of a cell can vary depending on the magnification used.

Answer 8

True

Question 9

Short Answer: What is the first step in calculating the actual length of a cell?

Answer 9

Measure the length of the cell using the microscope.

Question 10

If a scale bar shows 10 um at 1000x magnification, what would the equivalent scale bar length be at 500x magnification?

Answer 10

20 um