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Microbial Metabolism Model Organisms

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Questions and Answers

Which of the following characteristics is essential for an ideal organism for studying microbial metabolism?

High growth rate and small size

Ability to produce spores and survive extreme conditions

Ability to form biofilms and high resistance to antibiotics

Sequenced genome and rigorous in vivo genetic capabilities (correct)

Why are model systems and model organisms used in generating knowledge of general biological paradigms?

To study the unique metabolic paradigms of various bacteria

To analyze the genetic systems in eukaryotic and archaeal species

To compensate for the lack of available resources (correct)

To minimize the number of organisms worthy of study

Which organism is mentioned as a model bacteria for metabolic studies?

Salmonella typhimurium

Escherichia coli (correct)

Bacillus subtilis

Saccharomyces cerevisiae

Why is it desirable to have a model for both gram-positive and gram-negative bacteria?

Because metabolic paradigms differ between them Signup and view all the answers

What characteristic makes an ideal organism for studying microbial metabolism different from others?

Rigorous in vivo genetic capabilities Signup and view all the answers

What is a critical feature of a model system for eukaryotic and archaeal metabolisms?

Long history of genetic analyses and support for in vivo analyses Signup and view all the answers

What is the term used to describe all chemical reactions involved in maintaining the living state of the cells and the organism?

Metabolism Signup and view all the answers

What is the role of primary metabolites?

Growth and development of hyphal structure Signup and view all the answers

Which category of metabolism involves the synthesis of all compounds needed by the cells?

Anabolism Signup and view all the answers

Which organic compound is an example of a secondary metabolite involved in defense mechanisms?

Atropine Signup and view all the answers

Which category of metabolism involves the breakdown of molecules to obtain energy?

Catabolism Signup and view all the answers

What is the function of secondary metabolism?

Competition Signup and view all the answers

What is the primary function of primary metabolism?

Growth and development of hyphal structure. Signup and view all the answers

What is the role of secondary metabolites in ecological function?

Defense mechanisms Signup and view all the answers

What is a convenient division of metabolism into two categories?

Catabolism and anabolism. Signup and view all the answers

What is the key component in maintaining normal physiological processes often referred to as a central metabolite?

Citric acid. Signup and view all the answers