Lab Act 2 Microscopy Reading

Question 1

-It is a precise and delicate instrument consisting mainly of a system of lenses, assembled to give a sharp, distinct and magnified image of the microscopic specimens.
- important tool in the study of Biology

Answer 1

Microscope

Question 2

What are the parts of the compound microscope

Answer 2

-Magnifying/Optical Parts
-Illuminating Parts
-Mechanical Parts
-Focusing Mechanism

Question 3

are composed of ground and polished lenses for the enlargement of the image and objects under study.

Answer 3

Magnifying/Optical Parts

Question 4

Are found below the stage for light gathering and regulation

Answer 4

Illuminating Part

Question 5

microscope consist of precise parts of metals to support and adjust the optical parts.

Answer 5

Mechanical Parts

Question 6

used to raise or lower the stage to get the right image of the specimen.

Answer 6

Focusing Mechanism

Question 7

which are attached to the revolving/rotating nosepiece that may be of four kinds. It gives the initial magnification.

Answer 7

Objectives

Question 8

is found on top of the microscope which gives the final magnification of the specimen with a magnifying power of 10x.

Answer 8

Ocular/Eyepiece

Question 9

is the shortest objective usually marked 4x. It provides general view of the specimen.

Answer 9

Scanner

Question 10

a shorter objective usually with a magnifying power of 4x to 10x with a working distance of 16mm. It also provides the general view of the specimen.

Answer 10

Low Power Objective (LPO)

Question 11

is usually marked 40x to 60x with a working distance of 4mm. It provides a more detailed view than the LPO.

Answer 11

High Power Objective (HPO)

Question 12

gives the highest magnification with a magnifying of 97x to 100x with a working distance of 1.8mm

Answer 12

Oil Immersion Objective

Question 13

illuminates the object to be seen. The source can either be a mirror or the instrument is self-illuminating. Mirror has two reflecting surfaces; plane and concave. Plane surface of the mirror is used when the source of light is artificial but when natural, the concave surface of the mirror is used.

Answer 13

Light source

Question 14

found below the stage connected to the condenser is used to regulate the amount of light by means of a lever.

Answer 14

Iris Diaphragm

Question 15

found below the stage is used to concentrate light to the specimen under study.

Answer 15

Condenser

Question 16

is heavy U, V or Y shaped foot that makes the microscope stand stable on any flat surface.

Answer 16

Base

Question 17

is a short piece of metal supporting the rest of the microscope.

Answer 17

Pillar

Question 18

Is a curved metal for holding the microscope

Answer 18

Arm or Handle

Question 19

is a joint between the arm and the pillar that allows possible tilting of the upper
part of the microscope

Answer 19

Inclination Joint

Question 20

is a tubular part attached to the body and bears the upper arm.

Answer 20

Body Tube

Question 21

the structure that facilitates the changing of objectives in
focus.

Answer 21

Revolving or Rotating Nosepiece

Question 22

is a concave disc which protects the objective from dust.

Answer 22

Dust shield

Question 23

is a platform with central aperture for the passage of reflected light from the mirror and
where the slides to be observed are placed.

Answer 23

Stage

Question 24

Replaces the clips and is used in manipulation of slide.

Answer 24

Mechanical Stage

Question 25

facilitates the movement of the slide forward, backward or from left to right.

Answer 25

Coaxial stage control

Question 26

regulates the intensity of light given by the microscope.

Answer 26

Light Intensity control knob

Question 27

is a larger knob attached on the arm or raise or lower the stage when the low power objective is in focus.

Answer 27

Coarse focus knob

Question 28

is the smaller knob also attached to the arm used for delicate focusing of the specimen under the high power and oil immersion objectives.

Answer 28

Fine Focus Knob