NY Regents History of Cells & Microscopes

Front

What is the function of the coarse adjustment knob on a microscope?

Back

The coarse adjustment knob is used to focus the microscope when viewing specimens under low power.

Front

What does the diaphragm on a microscope do?

Back

The diaphragm regulates the amount of light that reaches the specimen being viewed.

Front

What is an ultracentrifuge?

Back

An ultracentrifuge is a device that separates cell parts according to their densities by spinning cellular materials at very high speeds.

Front

How does the orientation of an object change when viewed through a microscope?

Back

Objects viewed through a microscope appear upside down and reversed compared to their actual orientation.

Front

What is the maximum magnification of an electron microscope?

Back

An electron microscope can enlarge a specimen up to 200,000 times.

Front

What are organelles?

Back

Organelles are specialized structures within a cell that perform specific functions, such as mitochondria and chromosomes.

Front

What is the difference between a dissecting microscope and an electron microscope?

Back

A dissecting microscope is used for low magnification and viewing larger specimens, while an electron microscope is used for high magnification and viewing small structures like organelles.

Front

What is the purpose of using mirrors in a microscope?

Back

Mirrors in a microscope help direct light towards the specimen, enhancing visibility.

Front

What happens to the appearance of the letter 'e' when viewed through a microscope?

Back

The letter 'e' appears upside down and reversed when viewed through a microscope.

Front

What is the role of light in microscopy?

Back

Light is essential in microscopy as it illuminates the specimen, allowing for better visibility and detail.