Microscope Structure and Types

<p>To interact with and pass through the specimen to create an image. (A)</p> Signup and view all the answers

<p>Magnetic lenses using electromagnetic fields. (C)</p> Signup and view all the answers

<p>To achieve the high resolution needed to discern organelles, viruses, and molecules. (C)</p> Signup and view all the answers

<p>An influenza virus. (A)</p> Signup and view all the answers

<p>Transmission electron microscopy (C)</p> Signup and view all the answers

<p>A protein molecule. (B)</p> Signup and view all the answers

<p>Detailed study of viruses and molecules usually requires electron microscopy. (B)</p> Signup and view all the answers

<p>To bring the image into focus for the eye (C)</p> Signup and view all the answers

<p>At the top end of the body tube (C)</p> Signup and view all the answers

<p>The eyepiece (C)</p> Signup and view all the answers

<p>To collect and focus light coming directly from the sample. (A)</p> Signup and view all the answers

<p>To provide the final focal point for the eye (A)</p> Signup and view all the answers

<p>Glass (A)</p> Signup and view all the answers

<p>The image could not be brought into focus for viewing (A)</p> Signup and view all the answers

<p>A cylinder (D)</p> Signup and view all the answers

<p>One or more lens elements. (A)</p> Signup and view all the answers

<p>It is primarily responsible for gathering light directly from the specimen. (C)</p> Signup and view all the answers

<p>The revolving nosepiece (A)</p> Signup and view all the answers

<p>Rotating the nosepiece (A)</p> Signup and view all the answers

<p>The revolving nosepiece (B)</p> Signup and view all the answers

<p>To allow the selection of different objective lenses (B)</p> Signup and view all the answers

<p>The revolving nosepiece (B)</p> Signup and view all the answers

<p>4x (B)</p> Signup and view all the answers

<p>High power (C)</p> Signup and view all the answers

<p>Cedar oil (B)</p> Signup and view all the answers

<p>The magnification increases by a factor of 4 (B)</p> Signup and view all the answers

<p>Mid range detail observation. (C)</p> Signup and view all the answers

A type of microscope that uses electrons to create an image of a sample.

In a TEM, these are used to focus the electron beam and create an image.

This process involves electrons passing through the sample, projecting an image onto a screen.

In a TEM, this screen shows the image after the electron beam passes through the sample.

It's a way to capture a permanent record of the image created by the TEM.

A type of microscope that uses a beam of electrons to create an image. This allows for much greater magnification and resolution than light microscopes.

The smallest functional unit of a living organism. Examples include the nucleus, mitochondria, and endoplasmic reticulum.

Very small, infectious agents that are typically made up of genetic material (DNA or RNA) surrounded by a protein coat.

The smallest unit of a chemical element, consisting of a nucleus and one or more electrons.

The size and scale of living things and their parts. This can range from microscopic molecules to large organisms.

The lens you look through to view the magnified specimen.

The part of the microscope that holds the objective lenses and connects to the eyepiece.

Lenses located on the revolving nosepiece, providing different levels of magnification.

A rotating disc attached to the body tube, holding multiple objective lenses.

The platform where the specimen is placed for viewing.

A container that houses the objective lenses in a microscope.

The material commonly used to create objective lenses in microscopes.

The purpose of an objective lens in a microscope.

The object being examined under a microscope.

The process of switching between different objective lenses for varying magnification.

The lower part of the microscope tube where the objective lens is attached.

The part of the microscope that holds the objective lenses and allows for lens selection.

An objective lens with a magnification of 4x, providing the lowest magnification for viewing a sample. It offers a wide field of view and is often used for initial scanning.

An objective lens with a magnification of 10x, offering a moderate level of magnification for a sample. It provides a good balance between field of view and detail.

An objective lens with a magnification of 40x, providing a higher level of magnification for a sample. It allows for detailed observation, revealing finer structures.

An objective lens with a magnification of 100x, providing the highest level of magnification. It requires immersion oil to improve resolution and clarity.

The total magnification of a sample is determined by multiplying the magnification of the objective lens by the magnification of the eyepiece lens.