9. Which metabolic pathways are used by an obligate aerobe, an obligate anaerobe, a facultative anaerobe?

A bacterial organism is catalase positive and cytochrome oxidase positive. This could suggest that the organism is an obligate aerobe. True or false?

A hyperthermophile most likely has:   a)  cryoprotectants   b)  low void volume proteins   c)  unsaturated fatty acids   d)  isoprenoid lipids

What do you mean by obligate anaerobes? Give some examples.

12. A differential media  a) allows visual distinction between bacteria to perform a specific biochemical process b) inhibits the growth of certain bacteria c) will only grow Gram-negative bacteria d) is a selective media

What is obligate aerobes and obligate anaerobe? Give examples.

Discuss the following statement: ‘Microbial metabolisms are coupled acrossthe anoxic-oxic interface in several environments.’ Draw on at least threespecific examples to support your arguments.

Escherichia coli O157:H7 is a foodborne pathogen and can cause serious illness in humans by producing toxins that can severely damage the lining of intestines and kidneys. What are the oxygen requirements of coli? What result would you observe in the MTM agar deep test? Explain. Research on the growth requirements of this bacterium is required. What is the role of oxygen and cytochrome c oxidase in aerobic respiration? Why does the nitrate reduction tube turn red after the addition of zinc? Clostridium tetani is a common soil bacterium and causes tetanus. Would you expect tetani to possess the enzyme catalase? Explain. Research on the growth requirements of this bacterium is required.

7) Psychrophiles, thermophiles, halophiles, and acidophiles are defined by their unique abilities to thrive in, respectively, environments that are extremely Group of answer choices salty, cold, hot, acidic hot, cold, salty, acidic cold, hot, salty, basic hot, cold, acidic, salty cold, hot, salty, acidic

What is one difference between fermentation and anaerobic respiration?  Since neither requires oxygen, why would a microbe select one of these versus the other?  Name a specific microbe which uses fermentation and a specific microbe which uses anaerobic respiration.