Ch. 11 microbiology
Enteric bacteria that ferment _____ are called coliforms. A. Sucrose B. Maltose C. Lactose D. Glucose
C. Lactose
__________ are members that typically inhabit the intestinal tract
Enterococcus
______ are members that include microbiota in the mouth and in the vagina during childbearing years
Lactobacillus
________ are species used to make cheese
Lactococcus
An organism that cannot reproduce outside of a host cell is termed an _______ __________ parasite.
Obligate intracellular
Aerobic chemoorganotrophs oxidize ______ compounds to obtain energy
Organic
T/F: Methane gas can be collected and used for generating electricity
True
T/F: obligate aerobes can only respire.
True
Humans infected with helicobacter pylori may develop stomach or duodenal ________
Ulcers
An organism that is a common sexually transmitted disease
Chlamydia trachomatis
Propionibacterium A. produces propionic acid. B. requires aerobic environments. C. produces propionic acid AND is responsible for the holes in Swiss cheese. D. produces lactic acid. E. is responsible for the holes in Swiss cheese.
C. Produces propionic acid AND is responsible for the holes in swiss cheese
An organism that is an atypical pneumonia
Chlamydophila pneumoniae
Facultative anaerobes typically use aerobic respiration if _____ is present. A. S B. H+ C. H2S D. O2
D. O2
It has been estimated that 99% of the intestinal bacteria are A. facultative anaerobes. B. obligate aerobes. C. facultative aerobes. D. obligate anaerobes.
D. Obligate anaerobes
Sulfur-reducing bacteria have a positive impact on the environment because they: A. Are a component of the sulfur cycle B. Decompose eggs C. Corrode pipes and other metals D. Produce sulfuric acid, which can be harvested
A. Are a component of the sulfur cycle
Thermus and Deinococcus A. survive in extreme environments. B. are both radiation resistant. C. both serve as the source of Taq polymerase. D. are both thermophilic.
A. Survive in extreme environments
An atmosphere that lacks O2 is called ______
Anoxic
Clostridium, Lactobacillus, and Propionibacterium all A. use sulfur compounds as terminal electron acceptors. B. oxidize organic compounds AND use organic compounds as terminal electron acceptors. C. oxidize inorganic compounds. D. use organic compounds as terminal electron acceptors. E. oxidize organic compounds.
B. Oxidize organic compounds AND use organic compounds as terminal electron acceptors
A special staining procedure called the _______ is an important test used in the identification of Mycobacterium species. A. Negative stain B. Simple stain C. Acid-fast stain D. Gram stain
C. Acid-fast stain
Which of the following microbes is(are) important to cheese-making? A. Desuflovibrio B. Propionibacterium C. lactic acid bacteria D.b Clostridium acetylbutylicum E. Lactic acid bacteria AND Propionibacterium
E. lactic acid AND propionibacterium
A particular characteristic of disease-causing Streptococcus is A. growth at refrigerator temperatures. B. catalase production. C. beta-hemolysis. D. lactic acid production.
C. Beta-hemolysis
Staphylococcus epidermidis is found as normal microbiota of the _______. A. Gastrointestinal tract B. Respiratory tract C. Skin D. Bloodstream
C. Skin
An organism that is a psittacosis
Clamydophila psittaci
T/F: scientist now understand the true diversity of microbial life and have determined the relationship between the millions of prokaryotes that exist
False