@ 4. What makes a microscope determine how clearly a small object can be viewed
A. Mirror & eyepiece B. Mirror & magnification C. Objectives & resolution Magnification & resolution
3
5. What is the science of investigating small objects and structures?
A. autopsy
B. colonoscopy
C. endoscopy D. microscopy
6. What type of microscope which uses visible light to form an image?
A. Optical Microscope
B. Electron Microscope
Scanning Electron Microscope (SEM)
D. Transmission Electron Microscope (TEM)
7. In what year did the father-and-son duo spectacles-makers create the first microscope?
A) 1590
B. 1667
C. 1675
D. 1830
8. Who uses the microscope with only one lens to observe insects and other specimens?
A. Robert Hooke B. Richard Zsigmondy C) Anton van Leeuwenhoek D. Hans & Zacharias Janssen
9. Which focusing knob can be used with low power?
A. Diaphragm B. Inclination knob C. High power objective
D. Fine adjustment knob
10. How many objective lenses are there in a compound microscope? A. 1 B. 3
C.6 D. 12
11. Where should a specimen be positioned under a microscope under low power to view it correctly?
A. Middle
B. Bottom
C. Left side
D. Right side
12. To focus a specimen, it is best to start with which objective:
A. Ocular
B. Scanning
D. High power
13. Which part of the microscope is used to sharpen the focus of the specimen?
A. Fine adjustment knob B. Coarse adjustment knob C. Low power objective lens D. High power objective lens
14. Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?
A. Eyepiece lens B. Objective lens C. Condenser lens D. Magnifying lens
15. Which of the following organs does NOT belong to the digestive system?
A Ears B. Esophagus
C. Mouth
D. Nose
16. Which of the following organs does NOT belong to the Circulatory system?
A. Artery
B. Heart
C. Nose D. Vein
17. Which of the following is NOT an organ system?
A. Digestive System B. Excretory System C. Depository System D. Respiratory System
18. Which of the following are organs for the plants, EXCEPT
A. Flowers
B. Leaves
C. Pots
D. Roots
C. Low power
A. Mirror & eyepiece B. Mirror & magnification C. Objectives & resolution Magnification & resolution
3
5. What is the science of investigating small objects and structures?
A. autopsy
B. colonoscopy
C. endoscopy D. microscopy
6. What type of microscope which uses visible light to form an image?
A. Optical Microscope
B. Electron Microscope
Scanning Electron Microscope (SEM)
D. Transmission Electron Microscope (TEM)
7. In what year did the father-and-son duo spectacles-makers create the first microscope?
A) 1590
B. 1667
C. 1675
D. 1830
8. Who uses the microscope with only one lens to observe insects and other specimens?
A. Robert Hooke B. Richard Zsigmondy C) Anton van Leeuwenhoek D. Hans & Zacharias Janssen
9. Which focusing knob can be used with low power?
A. Diaphragm B. Inclination knob C. High power objective
D. Fine adjustment knob
10. How many objective lenses are there in a compound microscope? A. 1 B. 3
C.6 D. 12
11. Where should a specimen be positioned under a microscope under low power to view it correctly?
A. Middle
B. Bottom
C. Left side
D. Right side
12. To focus a specimen, it is best to start with which objective:
A. Ocular
B. Scanning
D. High power
13. Which part of the microscope is used to sharpen the focus of the specimen?
A. Fine adjustment knob B. Coarse adjustment knob C. Low power objective lens D. High power objective lens
14. Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?
A. Eyepiece lens B. Objective lens C. Condenser lens D. Magnifying lens
15. Which of the following organs does NOT belong to the digestive system?
A Ears B. Esophagus
C. Mouth
D. Nose
16. Which of the following organs does NOT belong to the Circulatory system?
A. Artery
B. Heart
C. Nose D. Vein
17. Which of the following is NOT an organ system?
A. Digestive System B. Excretory System C. Depository System D. Respiratory System
18. Which of the following are organs for the plants, EXCEPT
A. Flowers
B. Leaves
C. Pots
D. Roots
C. Low power
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Answer:
5. D.
6. D
9. D.
10. B (3)
16. C
17. C
Answer:
Magnification
Microscopy is the science of investigating small objects and structures using a microscopic
optical microscope
The optical microscope, often referred to as the “light optical microscope,” is a type of microscope that uses visible light and a system of lenses to magnify images of small samples. Optical microscopes are the oldest design of microscope and were possibly designed in their present compound form in the 17th century.
1590
1590: Two Dutch spectacle-makers and father-and-son team, Hans and Zacharias Janssen, create the first microscope. 1667: Robert Hooke's famous "Micrographia" is published, which outlines Hooke's various studies using the microscope
1675: Enter Anton van Leeuwenhoek, who used a microscope with one lens to observe insects and other specimen.
coarse adjustment knob
Coarse and fine adjustment The coarse adjustment knob should only be used with the lowest power objective lens. Once it is in focus, you will only need to use the fine focus. Using the coarse focus with higher lenses may result in crashing the lens into the slide.
two
The compound microscope has two systems of lenses for greater magnification, 1) the ocular, or eyepiece lens that one looks into and 2) the objective lens, or the lens closest to the object
The depth of focus is greatest on the lowest power objective. Each time you switch to a higher power, the depth of focus is reduced. Therefore a smaller part of the specimen is in focus at higher power. The amount of light transmitted to your eye is greatest at the low power.
When focusing on a slide, ALWAYS start with either the 4X or 10X objective. Once you have the object in focus, then switch to the next higher power objective
fine focus knob
Answer. Explanation: Use the fine focus knob to sharpen the focus quality of the image after it has been brought into focus with the coarse focus knob. Illuminator, There is an illuminator built into the base of most microscopes
condenser lens
Explanation: Compound microscope contains three separate lens systems. The condenser lens is placed between the light source and the specimen and it gathers and focuses the light rays in the plane of the microscopic field to view the specimen
15
heart
17
lowpower?
Explanation: