Microscope Lab Instrument Quiz

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Questions and Answers

What type of microscope achieves higher levels of magnification?

Optical (light) microscope (correct)

Phase-contrast microscope

Fluorescence microscope

Stereo microscope

What is the main function of a microscope?

To view living cells

To make large objects look smaller

To study the properties of organic substances

To make small objects look larger (correct)

What is the function of a phase-contrast microscope?

To study living cells and how they reproduce through cell division (correct)

To view smaller specimens such as cell structures

To study properties of organic substances

To see specimens in 3D

What makes a compound microscope 'compound'?

It has two types of lenses that function to magnify an object Signup and view all the answers

How are light rays passing through specimens brought to focus in a high power or compound microscope?

By using a set of glass lenses Signup and view all the answers

What is the function of the condenser lens in a microscope?

To collect light from the illuminator and focus it on the specimen Signup and view all the answers

What type of microscope is used to study the properties of organic or inorganic substances?

Fluorescence microscope Signup and view all the answers

Which part of the microscope is used to control the amount of light reaching the specimen?

Diaphragm or Iris Signup and view all the answers

What is the main use of a revolving nosepiece or turret in a microscope?

To hold two or more objective lenses Signup and view all the answers

What does the coarse adjustment knob do in a microscope?

Moves the specimen back or forth to adjust the slide Signup and view all the answers

What is the function of the body tube in a microscope?

Holds the eyepiece and connects it to the objective Signup and view all the answers

What does the illuminator (light source) in a microscope do?

Provides a source of light at the bottom/base of the microscope Signup and view all the answers

What is the purpose of stage clips in a microscope?

Used to hold the slides in place Signup and view all the answers

What function does the objective lens serve in a microscope?

Magnifies the image of the specimen Signup and view all the answers

What is the function of diopter adjustment in a microscope?

Useful as a means to change focus on one eyepiece so as to correct for any difference in vision between your two eyes. Signup and view all the answers

What is the main function of the base in a microscope?

To support the microscope and provide stability. Signup and view all the answers

What is the general term used to describe the use of computers to process and transfer information?

Information Technology Signup and view all the answers

What is the main function of a compound microscope?

To achieve higher levels of magnification Signup and view all the answers

In addition to computers, what other office equipment does Information and Communication Technology (ICT) refer to?

Faxes and Telephones Signup and view all the answers

What type of microscope is used to study the properties of organic or inorganic substances?

Polarizing Microscope Signup and view all the answers

What does the illuminator (light source) in a microscope do?

Illuminates the specimen for observation Signup and view all the answers

What is a defining characteristic of a computer?

Stores and processes data Signup and view all the answers

What type of computer is used by large organizations such as utility companies and banks?

Mainframe computers Signup and view all the answers

In a networked computer system, where is the software and data stored?

On the central server Signup and view all the answers

What is the main function of a tower model of a personal computer?

To save desk space Signup and view all the answers

What are personal computers commonly used for?

Office work and home use Signup and view all the answers

Study Notes

Microscope Types and Functions

Compound microscopes achieve higher levels of magnification than other types of microscopes.
Microscopes are used to magnify small objects, making them visible to the naked eye.
Phase-contrast microscopes are used to enhance the contrast of transparent specimens by manipulating the phase of light passing through them.
A compound microscope is called 'compound' because it uses a combination of two lenses: the objective lens and the eyepiece lens, to magnify the specimen.
In a high power or compound microscope, light rays passing through the specimen are focused by a series of lenses which are arranged in a specific order: the objective lens, the body tube, and the eyepiece lens. This combination of lenses magnifies the image of the specimen.
The condenser lens in a microscope focuses light from the illuminator onto the specimen, creating a cone of light that illuminates the specimen evenly.
Electron microscopes are used to study the properties of organic or inorganic substances at a very high magnification, revealing detailed structure and composition.
The diaphragm, located below the stage, controls the amount of light reaching the specimen.
The revolving nosepiece or turret holds multiple objective lenses and allows the user to easily switch between different magnifications.
The coarse adjustment knob moves the stage up and down, allowing the user to bring the specimen into focus at low magnifications.
The body tube connects the objective lenses to the eyepiece lens, providing a pathway for light to travel through the microscope.
The illuminator (light source) provides a focused light beam that illuminates the specimen.
Stage clips hold the slide in place on the stage.
The objective lens is the lens closest to the specimen, and it is responsible for magnifying the image of the specimen.
Diopter adjustment allows the user to adjust the focus of the eyepiece lens to match their own vision.
The base provides a stable platform for the microscope.

Information and Communication Technology (ICT)

Information and Communication Technology (ICT) is a broad term that encompasses the use of computers and other technologies to process and transfer information.
Computers, along with other office equipment such as printers, scanners, and fax machines, are considered part of ICT.
Computers are defined by their ability to process information, store data, and perform calculations.
Mainframe computers are powerful systems used by large organizations like utility companies and banks to handle heavy workloads.
In a networked computer system, the software and data are typically stored on a central server.
The tower model of a personal computer houses the main components such as the motherboard, hard drive, and power supply.
Personal computers are commonly used for tasks such as word processing, internet browsing, and playing games.

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Description

Test your knowledge of microscopes, including their functions and types. Learn about the use of microscopes in studying small objects and their composition.