List three genera of Betaproteobacteria that containchemolithotrophic species.

Q: enrichment culture to isolate aerobic and anaerobic nitrogen-fixing bacteria, sulfate-reducing…

A: Enrichment culture:  This type of culture containing  certain growth media ,allows  and  favours the…

Q: Why does an facaltive anaerobic bacterium usually grow better with oxygen than without?

A: A facultative anaerobe is one which is able to survive in both aerobic (oxygen) as well as anaerobic…

Q: What are the possible sources of Salmonella spp.that cause food infections?

A: The food poisoning caused by the species of this bacterium leads to a very serious form of…

Q: arrangement and virulence factors of Bartonella spp

A: Bartonella sp. are small, gram-negative and pleomorphic cocci-bacilli. Many of its species are…

Q: Bacteria are capable of rapid ______________, and as a resultthese organisms vary enormously in…

A: Bacteria consist of all the characteristics of a living being and can reproduce independently via…

Q: List two metals that are oxidized by sheathed bacteria.

A: The procedure in which atom or compound loses an electron termed oxidation. Metals get easily…

Q: With respect to sulfate-reducing bacteria and acetateas substrate, which genera contain “incomplete…

A: Sulfate-reducing bacteria are the bacteria that exhibit sulfate dependent anaerobic respiration.…

Q: Why does C. diphtheriae have such a high requirement for iron as the  organism is aerobic?

A: The Diptheria toxin contains large amounts of amino nitrogen and catalyzes a chemical reaction in…

Q: Why do botulism and tetanus show such opposing symptoms?

A: Botulism and tetanus are two neurological disorders in man and animals caused by the neurotoxins…

Q: A chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does…

A: INTRODUCTION Chemolithoautotrophs These are organisms that obtain energy from oxidizing inorganic…

Q: Compare and contrast the characteristics and habitats of methanogens, sulfur- and sulfate-reducing…

A: Bacteria are prokaryotic organisms found almost in all places on the planet playing an important…

Q: Select all statements that are true regarding members of the genus Mycobacterium. O They contain…

A: Introduction: TB or tuberculosis is a disease caused by a bacterium called Mycobacterium…

Q: How could an infection with H. pylori be diagnosed given the knowledge that the urease enzyme it…

A: An infection with H. pylori can be diagnosed using the urea breath test which is based on the…

Q: Differentiate between psychrophile and psychrotroph.

A: Different microorganisms require an optimal range of temperature conditions to survive and thrive.…

Q: The microbial species, Brocadia anammoxidans belongs to which organism group

A: The earth contains countless generally uncharacterized Bacteria and Archaea. Microbiologists are…

Q: What is a major habitat for many species of Acidobacteria?

A: Acidobacteria   Acidobacteria is a species of bacteria. Members of this species vastly differ…

Q: How would a facultative anaerobe growth curve change if it was placed in the presence of oxygen…

A: Facultative anaerobes are organisms that survive in the presence of oxygen and use oxygen for…

Q: What characteristic of the methanogens makes it logical to discuss them with the Bacteria rather…

A: Methanogens are a group of microorganisms belonging to the domain Archaea. They are unique in their…

Q: What characteristics of azotobacter species protect their nitrogenase enzyme from inactivation by…

A: Nitrogen fixation is the process by which atmospheric nitrogen (N2) is converted into a biologically…

Q: Strict anaerobes cannot live in the presnece of oxgyen because: a.)they have to mitochondria…

A: Cell biology is the investigation of cell design and capacity, and it spins around the idea that the…