micro exam 1
bacterial endospores usually function in
survival
When a hypothesis has been thoroughly supported by long-term study and data, it is considered
a theory
identify the process or environment in this list that is not affected by microorganisms. a. oxygen cycles b.global temps c. human health e. all have microbial involvement
all have microbial involvement
which of the following is not useful to determine whether a clinical isolate is a bacterium, fungus, or protozoan? a.size b. if it has a cell wall c.if it can form protective structures
all of above
Mitochondria likely originated from
bacteria
which of the following would be used to identify an unknown bacterial culture that came from a patient in the icu?
bergey's manual of systemic bacteriology
which of the following processes can be the result of human manipulation of microbial genes?
bioremediation
Archaea
lack peptidogylcan in their cell walls
nanotubes are extensions of the _______ that can function in _________
membrane, genetic exchange
The Golgi apparatus
modifies proteins
The lac operon is usually in the ______ position and is activated by a/an ______ molecule.
off, inducer
which of the following is present in both gram-positive and gram-negative cell walls?
peptidoglycan
which structure plays a direct role in the exchange of genetic material between bacterial cells?
pillus
which of the following is a macromolecule that assembles into bilayers?
protein
dna leads to rna which can lead to the creation of
proteins
which of these groups causes the most casualties on an annual basis globally?
protozoa
which of these organisms has the best potential to survive in extreme environments? a. fungi b.trophozoite form of protozoa c. helminth d.yeast
protozoa
which of the following is not a mechanism of horizontal gene transfer? a.spontaneous mutation b.transduction c.transformation d.conjugation
spontaneous mutations
Fungi produce which structures for reproduction and multiplication? a. endospores b. cysts c. spores d. eggs
spores
DNA is semi conservative because the ___ strand will become half of the ___ molecule
template, finished
Yeasts are __ fungi, and molds are __ fungi
unicellular, filamentous
which of the following is an acellular microorganism lacking a nucleus?
virus
which of the following is a characteristic of rna?
RNA molecules are necessary for translation and gene regulation
the creation of biological molecules and cells entirely from chemicals is called?
..
how many cycles of PCR would it take to create 16 copies of a DNA molecule?
4
find the true statement about biofilms
can complicate the treatment of some infections
single nucleotide polymorphism are found in
dna
microbes are found in which habitat?
everywhere
