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