Microbiology Fundamentals

Find the true statement about biofilms.

They complications the treatment of some infections.

Which of the following is not useful to determine whether a clinical isolate is a bacterium, fungus, or protozoan?

a. its size under under a light microscope b. whether it has a cell wall c. whether it can form protective structures under stress d.all of the above are reliable ALL

Mitochondria likely originated from

bacteria

Which of these organisms has the best potential to survive in extreme environments?

fungi

Archaea

lack peptidoglycan in their cell walls.

Nanotubes are extensions of the ______ that can function in ___________.

membrane, nutrient transfer

The Golgi apparatus

modifies proteins

The lac operon is usually in the _____ posistion 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 of these groups causes the most causualties on an annual basis globally?

protozoa

Which of the following is not a mechanism of horizontal gene transfer?

spontaneous mutations

Fungi produce which structures for reproduction and multiplication? a. endospores b. cysts c. spores d. eggs

spores

Bacterial endospores usually function in

survival.

The creation of biological molecules and cells entirely from chemicals is called

synthetic biology

DNA is semiconservative 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 a characteristic of RNA?

RNA molecules are necessary for translation and gene regulation

How many cycles of PCR would it take to create 16 copies of a DNA molecule?

4

Which of the following would be used to identify an unknown bacterial culture that came from a patient in the intensive care unit?

Bergey's Manual of Determinative Bacteriology

single nucleotide polymorphisms are found in

DNA

Which structure plays a direct role in the exchange of genetic material between baceterial cells?

Pilus