UNE MICROBIOLOGY FINAL EXAM

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UNE MICROBIOLOGY FINAL EXAM

UPDATED ACTUAL EXAM WITH CORRECT

SOLUTIONS.

Nitrogen is a growth Limiting nutrient for many organisms because - correct answer- only a few microbes can extract it from the atmosphere, but all organisms require if for amino acid and nucleotide synthesis

An organism that tolerates high _ is called a halophile - correct answer- Salt concentrations

What tests are used to help identify bacteria today? - correct answer- All of the above

all of the following are used to protect organisms from the toxic by products of oxygen EXCEPT - correct answer- protease

A metabolic pathway - correct answer- All the above are true

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which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and without the use of transport proteins? - correct answer- Small hydrophobic Molecules

The molecule that an enzyme acts upon is know as its - correct answer- substrate

any process hat releases energy is referred to as _ process - correct answer- exergonic

__ are complex communities of various types of microbes that adhere to surfaces - correct answer- biofilm

In 854, John Snow determined that contaminated water transmits - correct answer- Cholera

Koch's postulates provided guidelines for - correct answer- relating certain microorganisms with certain diseases

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The place on the enzyme where the enzyme interacts with the substrate is called the - correct answer- active site

Lipid A is also known as - correct answer- endotoxin

At temperatures higher than the maximum growth temperature for an organism - correct answer- hydrogen bonds are broken, proteins are denatured, and membranes become too fluid

Microbes that can live in the presence or absence of oxygen are called - correct answer- facultative anerobe

During which growth phase are bacteria more susceptible to antimicrobial drugs - correct answer- Log phase

Anabolic reactions may be characterized as - correct answer- forming large molecules from smaller molecules

heat is used in the destruction of bacteria because heat - correct answer- denatures enzymes by altering their tertiary structure 3 / 4

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which of the following prokaryotic cells contain an outer membrane - correct answer- gram-negative bacteria

The study of the occurrence, distribution, and spread of disease is known as - correct answer- epidemiology

which of the following was NOT an aspect of Pasteur's experiments to disprove spontaneous generation - correct answer- The flasks he used were sealed with corks

Leeuwenhoek made lenses that allowed him to magnify objects more than 200x. however, he failed to promote scientific inquiry because - correct answer- He didnt reveal how to grind the lenses and no one else was doing it that well

An __ organism is one that requires oxygen for growth - correct answer- Obligate aerobic

which of the following statements concerning the characteristics of life is FALSE - correct answer- Reproduction is defined as an increase in the size of an organism

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