MCB 2610 - Exam 1
microbiology - correct answer ✔the study of microbes
microbes - correct answer ✔forms of life too small to be seen with the naked
eye
prokaryotic cell - correct answer ✔lack a true membrane delimited nucleus;
no membrane bound organelles
eukaryotic cells - correct answer ✔have a membrane enclosed nucleus,
more complex morphologically, and are usually larger of the two types
Carl Woese - correct answer ✔developed the modern three classification
system based on analysis of small subunit (SSU) ribosomal RNA
Bacteria, Archaea, Eukarya - correct answer ✔the three domains used to
classify microorganisms
Bacteria - correct answer ✔usually single-celled; majority have cell walls with
peptidoglycan; most lack a membrane-bound nucleus; ubiquitous and some
live in extreme environments; some cause disease but most are beneficial;
many recycle elements
Archaea - correct answer ✔unique rRNA sequences; lack peptidoglycan in
cell walls and have unique membrane lipids; some have unusual metabolic
characteristics; many live in extreme environments; their role in causing
diseases is unknown
, Eukarya - correct answer ✔plants, animals, algae, protozoa, slime-molds,
water molds, fungi
viruses - correct answer ✔smallest of all microbes; very simple - consist of
only proteins and nucleic acids; requires a host cell to replicate; cause a range
of disease, even cancers
viroids (virusoids) - correct answer ✔infectious agents composed of RNA
prions - correct answer ✔infectious proteins
micelle - correct answer ✔single lipid layer which may have been an early
form of a plasma membrane
endosymbiotic theory - correct answer ✔theory that primitive prokaryotic
microbes ingested other other microbes, starting a symbiotic relationship,
forming the first basic eukaryotes
strain - correct answer ✔consists of descendants of a single, pure microbial
culture; share stable properties
Robert Hooke (1635-1703) - correct answer ✔developed a microscope that
could magnify 30X; discovered cells; composed cell theory
cell theory - correct answer ✔all living things are composed of cells
Antony van Leeuwenhoek (1632-1723) - correct answer ✔first person to
observe and describe microorganisms accurately; had a microscope that
could magnify 50-300X
microbiology - correct answer ✔the study of microbes
microbes - correct answer ✔forms of life too small to be seen with the naked
eye
prokaryotic cell - correct answer ✔lack a true membrane delimited nucleus;
no membrane bound organelles
eukaryotic cells - correct answer ✔have a membrane enclosed nucleus,
more complex morphologically, and are usually larger of the two types
Carl Woese - correct answer ✔developed the modern three classification
system based on analysis of small subunit (SSU) ribosomal RNA
Bacteria, Archaea, Eukarya - correct answer ✔the three domains used to
classify microorganisms
Bacteria - correct answer ✔usually single-celled; majority have cell walls with
peptidoglycan; most lack a membrane-bound nucleus; ubiquitous and some
live in extreme environments; some cause disease but most are beneficial;
many recycle elements
Archaea - correct answer ✔unique rRNA sequences; lack peptidoglycan in
cell walls and have unique membrane lipids; some have unusual metabolic
characteristics; many live in extreme environments; their role in causing
diseases is unknown
, Eukarya - correct answer ✔plants, animals, algae, protozoa, slime-molds,
water molds, fungi
viruses - correct answer ✔smallest of all microbes; very simple - consist of
only proteins and nucleic acids; requires a host cell to replicate; cause a range
of disease, even cancers
viroids (virusoids) - correct answer ✔infectious agents composed of RNA
prions - correct answer ✔infectious proteins
micelle - correct answer ✔single lipid layer which may have been an early
form of a plasma membrane
endosymbiotic theory - correct answer ✔theory that primitive prokaryotic
microbes ingested other other microbes, starting a symbiotic relationship,
forming the first basic eukaryotes
strain - correct answer ✔consists of descendants of a single, pure microbial
culture; share stable properties
Robert Hooke (1635-1703) - correct answer ✔developed a microscope that
could magnify 30X; discovered cells; composed cell theory
cell theory - correct answer ✔all living things are composed of cells
Antony van Leeuwenhoek (1632-1723) - correct answer ✔first person to
observe and describe microorganisms accurately; had a microscope that
could magnify 50-300X
