Mid-term Exam (Quiz) Flashcards
Chapter 1 & 3 (24 cards)
In microbiology, the practice of coloring a microbe with a dye, is referred to as
staining
Red blood cells are able to be observed with a light microscope.
True
A(n) ______ is an organism too small to be seen with the unaided eye.
microorganism
Which of the following staining techniques is commonly used to separate bacteria into two major categories based on cell wall structure?
Gram stain
Place the following units of measurement in the correct order from smallest to largest.
____ nm
____ m
____ mm
____ cm
____ µm
__1__ nm
__5__ m
__3__ mm
__4__ cm
__2__ µm
Microbes are associated with life-sustaining benefits as well as life-threatening diseases.
True
A(n) ______ microscope uses multiple lenses to observe specimens.
compound
Which of the following taxonomic groups include phototrophic organisms?
Bacteria
The electron microscope achieves higher magnification and greater resolution than a compound microscope.
True
Which of the following is not considered a microbe?
Plant
Fungal infections are studied by
mycologists.
What is the total magnification of a specimen viewed with a 10x ocular lens and a 45x objective lens?
450x
Prokaryotic cell with peptidoglycan cell wall
Bacteria
Prokaryotic cell with cell wall lacking peptidoglycan
Archaea
Eukaryotic cell with cellulose cell wall
Algae
Eukaryotic cells without cell wall
Protozoa
Eukaryotic cells with chitin cell wall
Fungi
Transmission electron microscopes are able to observe whole living organisms.
False
A(n) ______ is a term used to describe a disease-causing microorganism.
pathogen
Which of the following total magnifications will require the use of immersion oil?
1,000x
In the name Staphylococcus aureus, aureus is the _________.
Species
A virus that is 200 nm in diameter is an equivalent of ______ µm?
0.2 µm
In microscopy, ______ refers to the ability to distinguish two points.
resolution
Viruses are considered prokaryotic cells.
False
