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