TTU MBIO 3400 Exam Questions &
Answers (Grade A+)
Microbe -
correct answer ✅all organisms and viruses too small to be seen
without microscope
Microorganisms -
correct answer ✅an organisms too small to be seen without
microscope
Prokaryotes -
correct answer ✅lack nuclei. more simple than eukaryotic.
typically 1.0 μm or smaller in diameter. Bacteria, Archaea. (Drawn:
circle or oval with nothing in it) make proteins simultaneously to
reading their genetic code.
Eukaryotes -
correct answer ✅Has nucleus composed of genetic material
surrounded by membrane. Can grow into more complex organisms.
Fungi, protozoa, algae. (Drawn: circle with circle inside) have
nuclear envelope surrounding their DNA.
,TTU MBIO 3400 Exam Questions &
Answers (Grade A+)
Antoni van Leeuwenhoek -
correct answer ✅first man to discover bacterial/microbial world.
Virus -
correct answer ✅not real cell, cannot replicate on own, have to
invade other cells. Smaller than prokaryotic, not visible by light
microscopy.
Spontaneous generation -
correct answer ✅(abiogenesis) Aristotle. Led to scientific method.
Golden Age of Microbiology. Redi, Needham, Spallanzani, Pasteur
(bent flask neck into S, microbes did not appear)
, TTU MBIO 3400 Exam Questions &
Answers (Grade A+)
Louis Pasteur -
correct answer ✅Founding father of microbiology.
Proved spontaneous generation wrong (bent flask into S shape)
Pathogens cause infectious diseases (germ theory of disease)
Germ Theory of Disease -
correct answer ✅* applies only to infectious diseases
Pasteur's theory that microorganisms are responsible for diseases,
because bacteria is responsible for spoiling wine.
Robert Koch -
correct answer ✅etiology (disease causation). Studied anthrax,
method of isolation. Koch's postulates.
Koch's postulates -
correct answer ✅steps that must be taken to prove cause of any
infectious disease. establish a strong association (correlation) ->
prove the causative link.
1. Suspected causative agent must be found in every case of the
disease/be absent from healthy hosts
2. Agent must be isolated/grown outside host
Answers (Grade A+)
Microbe -
correct answer ✅all organisms and viruses too small to be seen
without microscope
Microorganisms -
correct answer ✅an organisms too small to be seen without
microscope
Prokaryotes -
correct answer ✅lack nuclei. more simple than eukaryotic.
typically 1.0 μm or smaller in diameter. Bacteria, Archaea. (Drawn:
circle or oval with nothing in it) make proteins simultaneously to
reading their genetic code.
Eukaryotes -
correct answer ✅Has nucleus composed of genetic material
surrounded by membrane. Can grow into more complex organisms.
Fungi, protozoa, algae. (Drawn: circle with circle inside) have
nuclear envelope surrounding their DNA.
,TTU MBIO 3400 Exam Questions &
Answers (Grade A+)
Antoni van Leeuwenhoek -
correct answer ✅first man to discover bacterial/microbial world.
Virus -
correct answer ✅not real cell, cannot replicate on own, have to
invade other cells. Smaller than prokaryotic, not visible by light
microscopy.
Spontaneous generation -
correct answer ✅(abiogenesis) Aristotle. Led to scientific method.
Golden Age of Microbiology. Redi, Needham, Spallanzani, Pasteur
(bent flask neck into S, microbes did not appear)
, TTU MBIO 3400 Exam Questions &
Answers (Grade A+)
Louis Pasteur -
correct answer ✅Founding father of microbiology.
Proved spontaneous generation wrong (bent flask into S shape)
Pathogens cause infectious diseases (germ theory of disease)
Germ Theory of Disease -
correct answer ✅* applies only to infectious diseases
Pasteur's theory that microorganisms are responsible for diseases,
because bacteria is responsible for spoiling wine.
Robert Koch -
correct answer ✅etiology (disease causation). Studied anthrax,
method of isolation. Koch's postulates.
Koch's postulates -
correct answer ✅steps that must be taken to prove cause of any
infectious disease. establish a strong association (correlation) ->
prove the causative link.
1. Suspected causative agent must be found in every case of the
disease/be absent from healthy hosts
2. Agent must be isolated/grown outside host
