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UTA Microbiology Exam 2 Questions and Answers Already Passe1
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UTA Microbiology Exam 2 Questions and AnswersAlready Passed
Bacteria, archaea and eukaryotes arose ____ yrs ago - ANSWER 2.9 billion
Which one is not a cause of infectious death worldwide? - ANSWER Ebola
____is the most infectious microbe caused through non-human-to-human
transmission, while____ is the most infectious microbe caused by human-to-human
transmission - ANSWER Malaria;measles
What is the only eradicated disease in the world - ANSWER Small pox
Which choice below lists emerging diseases? - ANSWER HIV, SARS, Lassa fever
Species that are in the same ___ are more closely related than species that are only
in the same ____. - ANSWER Family;order
The first person to use a microscope to observe living cells was ____? - ANSWER
Anton van Leeuwenhoek
Which of the following organisms shows the proper use of binomial nomenclature? -
ANSWER Escherichia coli
All of the following are considered eukaryotes except ___. - ANSWER Archea
Bacteria
Using microbes to detoxify a site contaminated with heavy metals is an example of -
ANSWER bioremediation
Helminths are ____ - ANSWER parasitic worms
Koch's postulates are criteria used to establish that ___ - ANSWER A specific
microbe is the cause of infectious disease
Sterile refers to ___. - ANSWER absence of any life forms and viral particles
The curve in Pasteur's swan neck flasks was important because ____. - ANSWER
It trapped microbes that otherwise would have entered the flask
One nucleotide contains one___ - ANSWER Pentose sugar
Phosphate
Nitrogen base
What bond results from an unequal sharing of electrons between atoms? -
ANSWER Polar covalent bond
, You have a solution of pH 6. What is the hydroxide ion concentration [OH-]? -
ANSWER 10-8 M
Which statement is true of all ions that are cations? - ANSWER The ion has more
protons than electrons
You have 2 beakers; one contains pure water, the other contains a hydrocarbon
solution (nonpolar). You pour table salt (NaCl) into each beaker. Predict what will
happen. *NaCl is an ionic compound - ANSWER NaCl crystals will dissolve readily
in water but will not dissolve in hydrocarbon solution
*like dissolves like* water is polar
The atomic number of sulfur is 16. What would be the valence number of electrons in
an atom of sulfur? - ANSWER 6
The atomic number of sulfur is 16. What is the bonding capacity of sulfur? -
ANSWER 2
Hydrogen bonds ___. - ANSWER Result from attractive forces between molecules
with polar covalent bonds
Ionic compounds ____. - ANSWER Are hydrophilic
Which of the following functional groups is mismatched to the organic compound in
which it is typically contained? - ANSWER Phosphate - carbohydrates
Which of the following have glycosidic bonds? - ANSWER Polysaccharides
All of the following are lipids except ___. - ANSWER Starch
its a carbohydrate
An amino acid contains all of the following except a/n ___. - ANSWER Phosphate
What type of bonds are formed by dehydration synthesis between adjacent amino
acids? - ANSWER Peptide
The alpha helix is a type of ____ protein structure. - ANSWER Secondary
A student forgot to label a beaker containing a DNA solution and a beaker containing
a glucose solution. Which of the following would be found in the beaker of DNA but
not in the beaker with glucose? - ANSWER Nitrogen and phosphorus
Which of the following is not a pyrimidine? - ANSWER Adenine (purine)
Which of the following is not a polymer? - ANSWER Glucose (monomer)
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