MCB3020 Exam 1 Questions with
Correct Answers
What are two types of fungi? - ANSWER - Yeasts and molds
What are the 4 most common characteristics in the domain "Bacteria?" - ANSWER - 1) Single-
celled
2) Peptidoglycan cell wall
3) Lack membrane-bound organelles
4) Lack a nucleus
Hydrogen gas theory on mitochondria - ANSWER - Suggests that the host became dependent
on the hydrogen gas produced by the symbiont
What are three positive roles that bacteria plays in the human body? - ANSWER - 1) Produce
vitamins in the intestines
2) Contribute to immune system development
3) Help digest food in the intestines
In bacteria and your cells, RNA is synthesized using _______ as a template and then the RNA
serves as a template for the synthesis of ________ - ANSWER - DNA / genes; protein(s) /
polypeptides
Which component of bacterial cells spontaneously forms vesicles? - ANSWER - lipids
, Why is it believed that DNA became the storage molecule for genetic information? - ANSWER -
It is more chemically stable than RNA
The endosymbiotic theory is supported by the finding that mitochondria contain _______ similar
to bacteria - ANSWER - ribosomes and DNA
In addition to mutation, bacteria and archaea increase their genetic diversity through which
mechanism? - ANSWER - Horizontal gene transfer
In addition to mutation, eukaryotes increase their genetic diversity through which mechanism? -
ANSWER - sexual reproduction
Some microorganisms can be macroscopic because they are _________ - ANSWER -
multicellular
The control and spread of communicable human diseases is the main concern of who? -
ANSWER - Public health microbiologists
Tracking down unidentified human pathogens falls within which field of microbiology? -
ANSWER - Medical
In addition to characterizing the body's defenses to infection, the field of immunology also deals
with ______ and _________ - ANSWER - allergies and autoimmune diseases
Which entities are included as microorganisms? - ANSWER - Organisms and acellular biological
entities
How are macroscopic microorganisms distinguished from other multicellular life forms? -
ANSWER - They lack differentiated tissues (and/or cell types)
pathovar - ANSWER - strains that differ by their plant host and the disease(s) they cause
bionomial system of nomenclature (classification) - ANSWER - each organism has 2 names:
Genus name: italicized and capitalized
- Can be abbreviated after first use
Correct Answers
What are two types of fungi? - ANSWER - Yeasts and molds
What are the 4 most common characteristics in the domain "Bacteria?" - ANSWER - 1) Single-
celled
2) Peptidoglycan cell wall
3) Lack membrane-bound organelles
4) Lack a nucleus
Hydrogen gas theory on mitochondria - ANSWER - Suggests that the host became dependent
on the hydrogen gas produced by the symbiont
What are three positive roles that bacteria plays in the human body? - ANSWER - 1) Produce
vitamins in the intestines
2) Contribute to immune system development
3) Help digest food in the intestines
In bacteria and your cells, RNA is synthesized using _______ as a template and then the RNA
serves as a template for the synthesis of ________ - ANSWER - DNA / genes; protein(s) /
polypeptides
Which component of bacterial cells spontaneously forms vesicles? - ANSWER - lipids
, Why is it believed that DNA became the storage molecule for genetic information? - ANSWER -
It is more chemically stable than RNA
The endosymbiotic theory is supported by the finding that mitochondria contain _______ similar
to bacteria - ANSWER - ribosomes and DNA
In addition to mutation, bacteria and archaea increase their genetic diversity through which
mechanism? - ANSWER - Horizontal gene transfer
In addition to mutation, eukaryotes increase their genetic diversity through which mechanism? -
ANSWER - sexual reproduction
Some microorganisms can be macroscopic because they are _________ - ANSWER -
multicellular
The control and spread of communicable human diseases is the main concern of who? -
ANSWER - Public health microbiologists
Tracking down unidentified human pathogens falls within which field of microbiology? -
ANSWER - Medical
In addition to characterizing the body's defenses to infection, the field of immunology also deals
with ______ and _________ - ANSWER - allergies and autoimmune diseases
Which entities are included as microorganisms? - ANSWER - Organisms and acellular biological
entities
How are macroscopic microorganisms distinguished from other multicellular life forms? -
ANSWER - They lack differentiated tissues (and/or cell types)
pathovar - ANSWER - strains that differ by their plant host and the disease(s) they cause
bionomial system of nomenclature (classification) - ANSWER - each organism has 2 names:
Genus name: italicized and capitalized
- Can be abbreviated after first use
