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Essential Biology: Definition of Life and Characteristics

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Essential Biology: Definition of Life and Characteristics

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Questions and Answers

What is the purpose of serial dilution?

To increase the concentration of a sample

To decrease the concentration of a sample at a fixed ratio (correct)

To mix a sample with different solvents

To separate a sample into its components

What is the typical ratio of dilution in serial dilution?

10 times (correct)

5 times

20 times

50 times

What is the purpose of the primary lens in a microscope?

To control the amount of light reaching the specimen

To collect and focus the light from the illuminator on to the specimen (correct)

To support the microscope and house the illuminator

To adjust the inconsistencies of our eyesight

What is the typical magnification power of the primary lens in a microscope?

4x, 10x, 20x, and 100x Signup and view all the answers

What is the purpose of the stage in a microscope?

To focus the microscope by moving up and down Signup and view all the answers

What is the typical amount of sample required for serial dilution?

1mL Signup and view all the answers

What is the result of serial dilution of a 10,000X sample five times at a 10X ratio?

10,000X; 1,000X; 100X; 10X; 0.1X Signup and view all the answers

What is the purpose of the microscope?

To magnify the specimen Signup and view all the answers

What is the website that provides a diagram of parts of a microscope?

<a href="https://www.timvandevall.com">https://www.timvandevall.com</a> Signup and view all the answers

What is the typical way to ask questions about the topic?

Via email or phone Signup and view all the answers