BIO 205 Final Exam Questions With Verified Answers
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BIO 205 Final Exam Questions With Verified Answers
Resolving power of an optical microscope is defined as:
The ability to distinguish two closely positioned objects as separate entities
What is the total magnification produced by a microscope, using a 10x ocular lens and a 10x objective lens...
bio 205 final exam questions with verified answers
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BIO 205 Final Exam Questions With Verified
Answers
Resolving power of an optical microscope is defined as:
The ability to distinguish two closely positioned objects as separate entities
What is the total magnification produced by a microscope, using a 10x ocular lens and a 10x objective
lens?
100x
This scientist experimented on his son and developed the first smallpox vaccine:
Edward Jenner
This man built the first crude compound microscope and coined the term "cell" to mean the smallest
unit of life:
Robert Hooke
Who discovered the first antibiotic, Penicillin?
Alexander Flemming
Put the speculation of spontaneous generation to rest by developing the "swan necked" flask:
Louis Pasteur
Archaea were reclassified based on their 16S rRNA sequence by this man in the 1970s.
Carl Woese
16S rRNA is an RNA molecule that is found in the
Ribosome
Spontaneous generation is defined as the generation of life from living matter**Spontaneous
generation = same as biogenesis = life from non-life**
False
A phylogenetic tree is a diagram based on genetic data used to infer ___________ between organisms
Evolutionary relationships
Which of the following statements concerning Koch's postulates is false?
F: Susceptible hosts are injected with a mixed culture of the suspected pathogens. True: A suspected
pathogen must be isolated and grown in pure culture. True: Koch's postulates involve the
experimental infection of susceptible hosts. True: the suspected pathogen must be isolated from the
host that became infected. True: all of Koch's postulates must be satisfied before an organism can be
proven to cause a particular disease.
Archaea are common human pathogens
False
,Using microbes to degrade an oil spill would be an example of
Bioremediation
The taxonomical hierarchy proceeds from the most general to the most specific in which order?
Domain, Kingdon, Phylum, Class, Order, Family, Genus, Species
You travel to Hawaii for a microbe sampling trip. You take water from a volcanic hot spring with very
low pH (acidic) and very high temperatures (in excess of 60*C). Your environmental sample will likely
be dominated by
Archaea
A traditional binomial scientific name is written using which two taxonomic classifications?
Genus and Species
Which of the following is NOT a known type of pathogen
Algae
Which two microorganisms are important in decomposition and nutrient recycling in the
environment?
Bacteria and fungus
Lipopolysaccharide (LPS) is comprised of
Lipid and sugar
LPS is anchored in the ____________ of the cell wall
Outer membrane
Lipid A is a(n)
Endotoxin
Consider the shape and arrangement of these cells: They are classified as: (image of two rods
connected to each other)***image of round = cocci. Cluster = staph
Diplobacilli... staphlococci
Bacterial conjugation involves the transmission of genetic information from one bacterium to another
bacterium through which structure?
Pilus
The bacterial flagellum is made of:
Protein
In biofilm formation, attachment of the pioneering species is followed by:
Colonization
, Gram-negative bacteria will be ________ after staining.
Pink
Which part of gram-negative bacteria is solubilized by the alcohol/acetone destain?
Outer membrane
Identify the flagellar arrangement that is characterized by 1 or more flagella at both ends. (image two
wiggly lines connected on both ends by three wiggly lines (each))
Amphitrichous
The size of most prokaryotic cells is measured in
Micrometers
Peptidoglycan is comprised of
Sugar and protein
The nucleoid
Contains the bacterial chromosome
The functional purpose of cellular inclusions is most often
Storage
Bacteria can achieve locomotion (movement) using which of the following?
Flagella
Mycobacteria are structured most similarly to a Gram-___________ cell and their walls have high
concentrations of ___________.
Positive; mycolic acids
Peptidoglycan is
present in all bacterial cells
A(n) ______________ is a type of glycocalyx that is firmly attached to the cell.
Capsule
An endospore germinates and reverts to a ______________ cell when conditions become favorable
again.
Vegetative
All of the following statements concerning osmosis are true EXCEPT:
Cells placed in a hypertonic solution will gain water and swell.
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