QUIZ 2.1 - The Microscope

Which part of the microscope contains the shutter that regulates the amount of light entering the lens system?

• iris diaphragm

• objective lenses

• stage

• fine adjustment knob

Which part of the microscope are objective lenses attached?

• base

• ocular eyepiece

• revolving nosepiece

• stage

On the microscope stage, what is used to hold the glass slide in place and prevent it from moving?

• stage clip

• fine adjustment knob

• iris diaphragm

• coarse adjustment knob

To focus a specimen, it is best to start with which objective?

• high power objective

• scanning objective

• low power objective

• medium power objective

5. When studying a specimen under the microscope the _____ is adjusted to bring the image into clear focus.

• fine adjustment knob

• mirror

• stage clip

• coarse adjustment knob

Who was the first to describe “cells” in dead cork tissue?

• Hans Janssen

• Antonie van Leeuwenhoek

• Zacharias Janssen

• Robert Hooke

The diagram shows a laboratory microscope. What are the functions of Part A and Part B?

• Part A: To adjust the coarse focus; Part B: To illuminate the object being viewed.

• Part A: To adjust the fine focus; Part B: To hold the slide on the stage.

• Part A: To magnify the object; Part B: To hold the slide on the stage.

• Part A: To magnify the object; Part B: To illuminate the object being viewed.

A microscope is an instrument that______________

• makes faraway objects look closer

• decreases the size of small objects

• makes small objects appear larger

• increases the size of small objects.

When holding the microscope, you should have one hand under the base and the

other ______

• holding the body tube

• holding the arm

• holding the stage

• holding the objectives

When zoomed in all the way, you should NOT use the ____________ because you could crack the slide.

• fine adjustment knob

• coarse adjustment knob

• Eyepiece

• Light source