STRAIGHTERLINE MICROBIOLOGY
PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS GRADED
A+
◍ The study of evolutionary relationships among organisms is called ______..
Answer: phylogeny
◍ The three cell types discussed, eukaryotes, archaea, and bacteria, all derived
from ______..
Answer: Last Universal Common Ancestor
◍ 1.1 Microbiology.
Answer: Specialized area of biology that deals with living things ordinarliy
too small to be seen without magnification
◍ Organisms called parasites are ______..
Answer: always harmful to their host
◍ Which of the following does not indicate microbe involvement in energy
and nutrient flow?.
Answer: Thermal hot springs warmed by heat from earth's interior
◍ 1.1 Microscopic is also an ______ and ______..
Answer: microogranism and microbe
◍ The subatomic particles that surround the nucleus are the ______..
Answer: Electrons
◍ 1.1 In context of infection and disease people call them what?.
Answer: germs, viruses, agents, "bugs"
◍ The number one worldwide infectious diseases are ______..
, Answer: respiratory disease
◍ 1.1 A small minority of microorganisms cause harm to other living beings.
True or false.
Answer: True
◍ A fat is called _____ if all carbons of the fatty acid chain are single-bonded
to 2 other carbons and 2 hydrogens..
Answer: saturated
◍ 1.1 Cellular microorganisms.
Answer: bacteria, fungi, protozoa
◍ One technique for staining bacteria for viewing under the microscope is
called the Gram stain. In this technique, alcohol is used as a decolorizer
because it degrades the outer membrane found in some bacteria. What
chemical component of the cell does alcohol affect?.
Answer: lipid
◍ 1.1 Helminths.
Answer: multicellular animals whose mature form is visible to the naked eye
◍ If a microbiologist is studying a specimen at a total magnification of 950X,
what is the magnifying power of the objective lens if the ocular lens is
10X?.
Answer: 95X
◍ NASA has published a list of criteria for identifying fossil bacteria in
samples from Mars, as part of a search for evidence of life. Which of the
following is good evidence for the presence of bacterial cells?.
Answer: cell size of 0.5 to 2 microns
◍ 1.1 acellular microorganisms cause what?.
Answer: viruses and prions
◍ 1.1 Archae are ________ microorganisms.
Answer: single celled
◍ 1.1 microorganisms grow and reproduce rapidly. true or false.
, Answer: true
◍ 1.1 We usually can't see microorganisms. true or false.
Answer: true
◍ Which type of microscope achieves the greatest resolution and highest
magnification?.
Answer: electron
◍ 1.1 what do microbiologist study?.
Answer: every aspect of microbes
◍ Which of the following is produced by adding 1% to 5% agar to nutrient
broth that is then boiled and cooled?.
Answer: a solid medium
◍ a spongiform encephalopathy of humans.
Answer: Creutzfeldt-Jacob disease
◍ 1.1 Medical microbiology.
Answer: deals with microbes that cause diseases in humans and animals
◍ 1.1 public health microbiology.
Answer: monitor and control health and the spread of diseases in
communities
◍ 1.1 immunology.
Answer: studies the complex of protective substances and cells produced in
response to infection; vaccination, blood testing, and allergy
◍ The term that refers to flagella at both poles of the cell is ______..
Answer: amphitrichous
◍ In the condition called athlete's foot, the fungus Trichophyton consumes the
keratin protein found in hair, nails, and dead skin. Which of the following
descriptors does not apply to Trichophyton?.
Answer: saprobe
◍ 1.1 industrial microbiology.
PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS GRADED
A+
◍ The study of evolutionary relationships among organisms is called ______..
Answer: phylogeny
◍ The three cell types discussed, eukaryotes, archaea, and bacteria, all derived
from ______..
Answer: Last Universal Common Ancestor
◍ 1.1 Microbiology.
Answer: Specialized area of biology that deals with living things ordinarliy
too small to be seen without magnification
◍ Organisms called parasites are ______..
Answer: always harmful to their host
◍ Which of the following does not indicate microbe involvement in energy
and nutrient flow?.
Answer: Thermal hot springs warmed by heat from earth's interior
◍ 1.1 Microscopic is also an ______ and ______..
Answer: microogranism and microbe
◍ The subatomic particles that surround the nucleus are the ______..
Answer: Electrons
◍ 1.1 In context of infection and disease people call them what?.
Answer: germs, viruses, agents, "bugs"
◍ The number one worldwide infectious diseases are ______..
, Answer: respiratory disease
◍ 1.1 A small minority of microorganisms cause harm to other living beings.
True or false.
Answer: True
◍ A fat is called _____ if all carbons of the fatty acid chain are single-bonded
to 2 other carbons and 2 hydrogens..
Answer: saturated
◍ 1.1 Cellular microorganisms.
Answer: bacteria, fungi, protozoa
◍ One technique for staining bacteria for viewing under the microscope is
called the Gram stain. In this technique, alcohol is used as a decolorizer
because it degrades the outer membrane found in some bacteria. What
chemical component of the cell does alcohol affect?.
Answer: lipid
◍ 1.1 Helminths.
Answer: multicellular animals whose mature form is visible to the naked eye
◍ If a microbiologist is studying a specimen at a total magnification of 950X,
what is the magnifying power of the objective lens if the ocular lens is
10X?.
Answer: 95X
◍ NASA has published a list of criteria for identifying fossil bacteria in
samples from Mars, as part of a search for evidence of life. Which of the
following is good evidence for the presence of bacterial cells?.
Answer: cell size of 0.5 to 2 microns
◍ 1.1 acellular microorganisms cause what?.
Answer: viruses and prions
◍ 1.1 Archae are ________ microorganisms.
Answer: single celled
◍ 1.1 microorganisms grow and reproduce rapidly. true or false.
, Answer: true
◍ 1.1 We usually can't see microorganisms. true or false.
Answer: true
◍ Which type of microscope achieves the greatest resolution and highest
magnification?.
Answer: electron
◍ 1.1 what do microbiologist study?.
Answer: every aspect of microbes
◍ Which of the following is produced by adding 1% to 5% agar to nutrient
broth that is then boiled and cooled?.
Answer: a solid medium
◍ a spongiform encephalopathy of humans.
Answer: Creutzfeldt-Jacob disease
◍ 1.1 Medical microbiology.
Answer: deals with microbes that cause diseases in humans and animals
◍ 1.1 public health microbiology.
Answer: monitor and control health and the spread of diseases in
communities
◍ 1.1 immunology.
Answer: studies the complex of protective substances and cells produced in
response to infection; vaccination, blood testing, and allergy
◍ The term that refers to flagella at both poles of the cell is ______..
Answer: amphitrichous
◍ In the condition called athlete's foot, the fungus Trichophyton consumes the
keratin protein found in hair, nails, and dead skin. Which of the following
descriptors does not apply to Trichophyton?.
Answer: saprobe
◍ 1.1 industrial microbiology.
