Microscope Discoveries

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Date:

Instructions: Explore the tiny world revealed by microscopes and the scientists who made key discoveries

1.
Who is credited with building one of the first practical microscopes and observing 'animalcules' (microorganisms)?
A
Robert Hooke
B
Hans Janssen
C
Antonie van Leeuwenhoek
D
Galileo Galilei
2.
Robert Hooke coined which biological term after observing cork under a microscope in 1665?
A
Tissue
B
Cell
C
Organism
D
Nucleus
3.
What type of microscope uses a beam of electrons instead of light to create images?
A
Phase-contrast microscope
B
Electron microscope
C
Optical microscope
D
Fluorescence microscope
4.
What was Louis Pasteur able to disprove using microscopy, leading to the germ theory of disease?
A
Spontaneous generation
B
Phlogiston theory
C
Humoral theory
D
Atomic theory
5.
What are the tiny organelles inside cells that produce energy, often called the 'powerhouse of the cell'?
A
Lysosomes
B
Ribosomes
C
Chloroplasts
D
Mitochondria
6.
Which type of microscope can produce 3D images of a specimen's surface?
A
Transmission electron microscope
B
Light microscope
C
Confocal microscope
D
Scanning electron microscope
7.
What did Alexander Fleming famously discover growing in a petri dish in 1928?
A
Vitamin C
B
Aspirin
C
Insulin
D
Penicillin
8.
What is the maximum useful magnification of a standard light microscope?
A
About 1,000x
B
About 500x
C
About 100x
D
About 10,000x
9.
What did Matthias Schleiden and Theodor Schwann propose in 1839?
A
Evolution theory
B
Cell theory
C
Atomic theory
D
Germ theory
10.
What structure, visible under a microscope, carries genetic information in cells?
A
Cell wall
B
Cytoplasm
C
Vacuole
D
Chromosome
11.
Which scientist first observed bacteria under a microscope in the 1670s?
A
Robert Koch
B
Antonie van Leeuwenhoek
C
Louis Pasteur
D
Joseph Lister
12.
What is the technique of staining specimens to make them more visible under a microscope called?
A
Chromatography
B
Histological staining
C
Fixation
D
Centrifugation
13.
The scanning tunneling microscope, which can image individual atoms, was invented in what decade?
A
1960s
B
1990s
C
1970s
D
1980s
14.
What type of blood cells, visible under a microscope, fight infections in the body?
A
White blood cells
B
Plasma cells
C
Red blood cells
D
Platelets
15.
Robert Koch used microscopy to identify the bacteria responsible for which deadly disease in 1882?
A
Smallpox
B
Typhoid
C
Tuberculosis
D
Cholera

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