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Biology Cell Structure and Microorganisms

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Biology Cell Structure and Microorganisms

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Questions and Answers

What is the primary component of peroxisomes in plant cells?

Cellulose

Catalase (correct)

Sucrose

Hydrogen peroxide

What is the function of the vacuole in plant cells?

To convert amino acids to fatty acids

To break down hydrogen peroxide

To synthesize cellulose

To store nutrients and waste products (correct)

What is the unit of measurement that is equal to 0.000001 meters?

Angstrom

Micrometer (correct)

Millimeter

Nanometer

What type of microscopy uses visible light to observe specimens?

Light Microscopy Signup and view all the answers

What is the purpose of catalase in peroxisomes?

To convert hydrogen peroxide to water and oxygen Signup and view all the answers

What is the name of the structure used to store nutrients and waste products in plant cells?

Vacuole Signup and view all the answers

What is the main difference between the image produced by Transmission Electron Microscopy (TEM) and Scanned-Probe Microscopy: Atomic Force?

The dimensionality of the image Signup and view all the answers

Which type of microscopy is used to study the surface features of cells and viruses?

Transmission Electron Microscopy (TEM) Signup and view all the answers

What is the main advantage of using electrons instead of light in Transmission Electron Microscopy (TEM)?

Electrons have a shorter wavelength Signup and view all the answers

Which type of microscopy is used to examine the internal ultrastructure of cells in thin sections?

Transmission Electron Microscopy (TEM) Signup and view all the answers

What is the main advantage of Scanned-Probe Microscopy: Atomic Force?

It produces three-dimensional images of biological specimens at high resolution Signup and view all the answers

What is the function of the Perfringolysin O toxin from Clostridium perfringens?

It makes holes in human plasma membranes Signup and view all the answers

What is the function of fluorochrome dyes in fluorescence microscopy?

To absorb UV light and emit visible light Signup and view all the answers

What is the maximum depth that can be imaged using confocal microscopy?

100 µm Signup and view all the answers

What is the purpose of two-photon microscopy?

To study cells attached to a surface Signup and view all the answers

What is the resolution of super-resolution light microscopy?

Less than 0.1 µm Signup and view all the answers

What is the function of scanning acoustic microscopy?

To study living cells attached to a surface Signup and view all the answers

What is the advantage of scanning electron microscopy over light microscopy?

Higher resolution Signup and view all the answers