PORTAGE LEARNING EXAM vc vc
Exam Solution
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Microbiology Exam 1 SPC 2026 A+ GRADE ASSURED CO vc vc vc vc vc vc vc vc
MPLETE SOLUTIONS AND VERIFIED ANSWERS (6A2F8)
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QUESTION 1 vc
Microorganism examples vc
ANSWER
Bacteria, algae, protozoa, helminths
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QUESTION 2 vc
Viruses are vc
ANSWER
parasitic, protein- vc
coated genetic elements, dependent on their infected host, and connected with the evolution of microbe
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s and humans
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QUESTION 3 vc
Factors impacting study of microorganisms:
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ANSWER
Reproduce rapidly, can be quickly grown in large populations in the laboratory, can't be seen directly, m
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icroscopes and other indirect means are used to study them.
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QUESTION 4 vc
Bacterial-type organisms have been on the planet for about:
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ANSWER
3.5 billion years Only living inhabitants for about 2 billion years. Prokaryotes have no true nucleus (pre-
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nucleus).
,QUESTION 5 vc
Eukaryotic organisms arose about: vc vc vc
ANSWER
1.8 billion years ago. Eu-
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kary means true nucleus. Precursors to the organisms that eventually formed multicellular animals.
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QUESTION 6 vc
Microbes and ubiquitous vc vc
ANSWER
Found in Earth's crust, polar ice caps, oceans, and the bodies of plants and animals. Occur in large numb
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ers. Live in places where other organisms cannot survive. Good bacteria exist.
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QUESTION 7 vc
How microbes shape out planet
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ANSWER
Microbes are the main forces that drive the structure and content the soil, water, and atmosphere. Prod
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uce gases such as CO2, NO, and CH3 that regulate the temp of earth. The enormous underground comm
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unity of microbes influence weathering, mineral extraction, and soil formation. Bacteria and fungi live in
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close associations with plants that help them obtain nutrients and protect them against disease.
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QUESTION 8 vc
Human uses for microbes in history vc vc vc vc vc
ANSWER
Bread, alcohol, cheese production, treatment of wounds and lesions, mining precious metals, clean up of
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human-created contamination.
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QUESTION 9 vc
Pathogens
ANSWER
Microbes that cause disease. WHO estimates that there are 10 billion new infections caused every year
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by microbes. Infections diseases are among the most common cause of death in US and worldwide. The
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death toll from infectious diseases is approximately 13 million ppl/year. CDC reports that a child dies fr
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om malaria every 30 seconds.
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, QUESTION 10 vc
Microbial causes for once thought to be noninfectious diseases:
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ANSWER
Gastric ulcers- Helicobacter pylori Diabetes- Coxsackievirus Schizophrenia-
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born agent Chronic infections with bacteria or viruses have been linked to multiple sclerosis, OCD, coro
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nary artery disease, and obesity.
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QUESTION 11 vc
Spontaneous generation theory vc vc
ANSWER
The belief that invisible vital forces present in matter led to the creation of life. Even after the discovery
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of microbes the theory of abiogenesis was still embraced by some. Others advocated biogenesis, saying
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that living things only arise from theres of their same kind.
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QUESTION 12 vc
Pasteur's Swan Neck Flask Experiment vc vc vc vc
ANSWER
helped to prove that microbes can be airborne, and live cannot be created from nothing.
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QUESTION 13 vc
Robert Hooke vc
ANSWER
1660s, used simple magnifying glass to study household objects/specimens.
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QUESTION 14 vc
Leeuwenhoek
ANSWER
manufactured simple microscopes to see the threads in fabrics. Observed "animalcules" in drops of rain
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water and other samples. Constructed over 250 small microscopes that could magnify up to 300x.
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QUESTION 15 vc
Exam Solution
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Microbiology Exam 1 SPC 2026 A+ GRADE ASSURED CO vc vc vc vc vc vc vc vc
MPLETE SOLUTIONS AND VERIFIED ANSWERS (6A2F8)
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QUESTION 1 vc
Microorganism examples vc
ANSWER
Bacteria, algae, protozoa, helminths
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QUESTION 2 vc
Viruses are vc
ANSWER
parasitic, protein- vc
coated genetic elements, dependent on their infected host, and connected with the evolution of microbe
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s and humans
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QUESTION 3 vc
Factors impacting study of microorganisms:
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ANSWER
Reproduce rapidly, can be quickly grown in large populations in the laboratory, can't be seen directly, m
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icroscopes and other indirect means are used to study them.
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QUESTION 4 vc
Bacterial-type organisms have been on the planet for about:
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ANSWER
3.5 billion years Only living inhabitants for about 2 billion years. Prokaryotes have no true nucleus (pre-
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nucleus).
,QUESTION 5 vc
Eukaryotic organisms arose about: vc vc vc
ANSWER
1.8 billion years ago. Eu-
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kary means true nucleus. Precursors to the organisms that eventually formed multicellular animals.
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QUESTION 6 vc
Microbes and ubiquitous vc vc
ANSWER
Found in Earth's crust, polar ice caps, oceans, and the bodies of plants and animals. Occur in large numb
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ers. Live in places where other organisms cannot survive. Good bacteria exist.
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QUESTION 7 vc
How microbes shape out planet
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ANSWER
Microbes are the main forces that drive the structure and content the soil, water, and atmosphere. Prod
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uce gases such as CO2, NO, and CH3 that regulate the temp of earth. The enormous underground comm
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unity of microbes influence weathering, mineral extraction, and soil formation. Bacteria and fungi live in
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close associations with plants that help them obtain nutrients and protect them against disease.
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QUESTION 8 vc
Human uses for microbes in history vc vc vc vc vc
ANSWER
Bread, alcohol, cheese production, treatment of wounds and lesions, mining precious metals, clean up of
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human-created contamination.
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QUESTION 9 vc
Pathogens
ANSWER
Microbes that cause disease. WHO estimates that there are 10 billion new infections caused every year
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by microbes. Infections diseases are among the most common cause of death in US and worldwide. The
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death toll from infectious diseases is approximately 13 million ppl/year. CDC reports that a child dies fr
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om malaria every 30 seconds.
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, QUESTION 10 vc
Microbial causes for once thought to be noninfectious diseases:
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ANSWER
Gastric ulcers- Helicobacter pylori Diabetes- Coxsackievirus Schizophrenia-
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born agent Chronic infections with bacteria or viruses have been linked to multiple sclerosis, OCD, coro
vc vc vc vc vc vc vc vc vc vc vc vc vc vc vc vc
nary artery disease, and obesity.
vc vc vc vc
QUESTION 11 vc
Spontaneous generation theory vc vc
ANSWER
The belief that invisible vital forces present in matter led to the creation of life. Even after the discovery
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of microbes the theory of abiogenesis was still embraced by some. Others advocated biogenesis, saying
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that living things only arise from theres of their same kind.
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QUESTION 12 vc
Pasteur's Swan Neck Flask Experiment vc vc vc vc
ANSWER
helped to prove that microbes can be airborne, and live cannot be created from nothing.
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QUESTION 13 vc
Robert Hooke vc
ANSWER
1660s, used simple magnifying glass to study household objects/specimens.
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QUESTION 14 vc
Leeuwenhoek
ANSWER
manufactured simple microscopes to see the threads in fabrics. Observed "animalcules" in drops of rain
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water and other samples. Constructed over 250 small microscopes that could magnify up to 300x.
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QUESTION 15 vc
