I. Microscope

Question 1

Q: This component is used to magnify the image of the specimen and is located at the top of the microscope. What is it?

Answer 1

ocular lens

Question 2

Q: This part supports the microscope when carried and connects the base to the head. What is it?

Answer 2

arm

Question 3

Q: These lenses are mounted on a revolving nosepiece and are used to further magnify the image of the specimen. What are they?

Answer 3

objective lens

Question 4

Q: This knob is used for making large adjustments to the focus, typically when using low-power objectives. What is it?

Answer 4

coarse adjustment knob

Question 5

Q: This knob is used for fine-tuning the focus to see details clearly, especially with high-power objectives. What is it?

Answer 5

fine adjustment knob

Question 6

Q: This flat platform holds the slide in place for observation. What is it?

Answer 6

stage

Question 7

Q: This component controls the amount of light that reaches the specimen. What is it?

Answer 7

diaphragm

Question 8

Q: This lens focuses light onto the specimen to enhance illumination. What is it?

Answer 8

condenser

Question 9

Q: This lever adjusts the diaphragm to regulate light intensity. What is it?

Answer 9

diaphragm lever

Question 10

Q: This diaphragm has an adjustable aperture that controls the amount of light reaching the specimen. What is it?

Answer 10

diaphragm iris

Question 11

Q: These knobs move the stage left, right, forward, and backward to position the specimen. What are they?

Answer 11

stage control knobs

Question 12

Q: This light source illuminates the specimen. What is it?

Answer 12

illuminator

Question 13

Q: This component provides stability and supports the microscope. What is it?

Answer 13

base

Question 14

Q: These secure the slide in place on the stage. What are they?

Answer 14

stage clips

Question 15

Q: How do you prepare a wet mount slide for observation?

Answer 15

1. Place the onion membrane on a water-dropped slide.
2. Lower a cover slip at a 45° angle to avoid air bubbles.
3. Wipe excess water around the cover slip with tissue.

Question 16

Q: What’s the first step in using a microscope?

Answer 16

A: Place the object glass with the specimen on the object table and clamp it in place.

Question 17

Q: What should you aim first when using a microscope?

Answer 17

A: Aim the objective lens with the weakest magnification power at the specimen.

Question 18

Q: How do you turn on the microscope’s light?

Answer 18

A: Turn on the light using the button located at the base of the microscope.

Question 19

Q: How do you adjust the object table for proper lighting?

Answer 19

A: Move the object table using the available buttons until the specimen is centered and exposed to light.

Question 20

Q: What should you do after adjusting the object table for light exposure?

Answer 20

A: Move the object table towards the objective lens using the focus control knob until it cannot move closer.

Question 21

Q: How do you focus the image on the microscope?

Answer 21

A: Look through the eyepiece lens and move the object table away from the objective lens until the clearest image is found.

Question 22

Q: How do you change magnification and adjust focus?

Answer 22

A: Change magnification by moving the nosepiece, then refocus using the fine focus adjuster.