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Microbiology Exam 1: Chapter 1
Microbiology Exam 1: Chapter 1
What are the types of organisms? Just letters.
BAFPAVM
How does bacteria get their energy?
Organic/inorganic chemicals or photosynthesis.
What is the cell wall of bacteria made of?
Petidoglycan.
Are archaea prokaryotic or eukaryotic?
Prokaryotic.
Where do archaea live? Give 3 examples of where.
Extreme conditions; cow rumen, halophiles, thermophiles.
Do archaea have peptiglycan?
No.
What kind of cell walls do fungi (C) have?
Chitin.
Where do fungi get their energy?
Organic chemicals.
What are the two types of fungi?
Unicellular and multicellular
How do protozoa get their energy?
By absorbing/ingesting organic chemicals.
How do protozoa move?
Pseudopods, cilia, or flagella.
What are the cell walls of algae made of?
Cellulose
What two things does algae produce?
Molecular oxygen and organic compounds.
Viruses are what if not prokaryotic or eukaryotic?
Acelluar
Viruses consist of either?
DNA or RNA
The core of a virus is surrounded by a what?
Protein coat
The protein coat of a virus may be enclosed by a?
Lipid envelope
How do viruses function?
By replicating in a host cell, an example of a parasite.
Multicellular Animal Parasites are prokaryotes or eukaryotes?
Eukaryotes
Parasitic flatworms or roundworms are called?
Helminths
What are the three domains of microorganisms? (BAE)
Bacteria, archaea, eukarya
Eukarya consists of?
Fungi, animals, plants, and protista
How long ago were the first life on earth?
4 billion years ago
2.8 billion years ago, bacteria changed the atmosphere from what to what?
Anaerobic to aerobic
1665, Robert Hooke reported that?
Living things are made of cells
1858, Rudolf Virchow said...
Cells come from preexisting cells.
What are the two statements of the Cell Theory?
Living things are made of cells and come form preexisting cells.
What did Anton van Leeuwenhoek do in comparison to Hooke?
First to observed microorganisms not blurred.
What is biogenesis?
Living organisms arise from preexisting life.
What is spontaneous generation?
Living organisms arise from nonliving matter
What experiment did Pasteur do? What did he disprove?
Covered/uncovered meat, he disproved spontaneous generation.
Pasteur states that microbes are responsible for...
Fermentation
What does microbial growth do to food?
It spoils it
What is pasteurization?
Application of high heat for a short period of time.
What did Ignaz Semmelweis advocate?
Hand washing to prevent disease spread.
What did Joseph Lister do?
He took Semmelweis' advice during surgery.
What is a vaccination?
Immunity from viruses
What is chemotherapy? What are two things used during it? (SD&A)
Treatment with chemicals; uses synthetic drugs or antibiotics.
What are two things that produce antibiotics?
Bacteria and fungi
Fleming discovered what? Which makes what?
Penicillium and it makes penicillin
What does Penicillin kill?
S. aureus
What is mycology?
The study of fungi
What is virology?
The study of viruses
What is parisitology? (2P)
The study of protozoa and parasitic worms
What is immunology?
The study of immunity
What are microbial genetics?
It is how microbes inherit traits
What does molecular biology do in relation to DNA?
Directs protein synthesis
What are genomics?
The study of an organism's genes
What is recombinant DNA?
DNA made from two sources
What do bacteria recycle (CNSP) that can be used by plants/animals?
Carbon, nitrogen, sulfur and phosphorous
What two pollutants do bacteria detoxify/degrade?
Oil and mercury
Bacillus thuringiensis is fatal to...but not to...
Fatal to insects, but harmless to animals, plants, and humans
What does biotechnology produce? Using what?
Food and chemicals using microbes
What does gene therapy do in human cells?
Fixes missing or defective genes in human cells
What does Recombinant DNA technology allow bacteria/fungi to do?
Produce a variety of proteins
What are normal microbiota?
Microbes normally present in/on the human body
What is resistance?
The ability of the body to ward off disease
What are some resistance factors?
Skin, stomach acid, and antimicrobial chemicals
What are biofilms?
Microbes that attach to solid surfaces and grow into masses
What are emerging infectious diseases (EIDs)?
New diseases and diseases that increase in incidence
What is MRSA?
Methicilin-resistant Staphylococcus aureus
What does Ebola cause?
Fever, hemorrhage, blood clotting