BSCI 223 Lecture Notes - Lecture 8: Thermodynamics, Antiseptic, Triclosan

134 views4 pages

byzantiumbutterfly989

7 Mar 2018

School

University of Maryland

Department

Biological Sciences Program

Course

BSCI 223

Professor

Dwyer

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Pentose phosphate pathway: an alternative to glycolysis for glucose catabolism, produces energy, but is important for the production of precursor metabolites, ribose 5p (nucleotides, erythrose 4p (amino acids, to build a cell, you need 12 precursor metabolites. Energy produced: aerobic respiration, uses oxygen as final electron acceptor, anaerobic respiration, uses other final electron acceptors, fermentation, substrate level phosphorylation. Additional catabolic pathways: lipid (fatty acid) catabolism, lipid hydrolysis = enzyme lipase will hydrolyze the bond between glycerol and fatty acid chains, glycerol is converted to dhap by phosphorylation and can enter the glycolysis pathway. Terminology of microbial control: biocides: chemicals that kill microorganisms on samples without specificity, disinfectant: physical or chemical agent that is used to inhibit or destroy microorganisms on inanimate objects, antiseptic: disinfectant that is used on skin. Temperature-based control: heat-related methods, effects of high temperature, proteins denature, structure and function of nucleic acids is disrupted.

Related Questions

Which of the following is common to both aerobic and anaerobicmicrobes?

	Fermentation
	An electron transport chain
	Pyruvate oxidation
	Glycolysis
	All of the above

The primary purpose of catabolism is

	generation of ADP.
	generation of ATP.
	oxidation of NADH to NAD⁺.
	degradation of organic molecules.
	biosynthesis.

What is a fate of pyruvate during alcoholic fermentation byyeast?

	It is reduced to lactic acid.
	It is oxidized to form glucose and carbon dioxide
	It is cleaved to form acetylaldehyde and carbon dioxide.
	It is catabolized in glycolysis.
	It is oxidized to form lactic acid and carbon dioxide.

Electrons needed to reduce an oxidized electron acceptor areprovided by

	a) externally provided compounds such asH<sub>2</sub>, lactate or formate.
	b) an intermediate electron carrier such as NADH.
	c) 0<sub>2</sub>.
	d) Both a and b
	e) All of the above

How are aerobic respiration and anaerobic respirationsimilar?

	Both use oxygen as a terminal electron carrier.
	These are other names for glycolysis.
	Both utilize inorganic molecules as terminal electronacceptors.
	Neither receives electrons from glycolysis.
	Anaerobic respiration does not exist in microbes.

The conversion of phosphoenolpyruvic acid (PEP) topyruvate

	a) releases CO<sub>2</sub>.
	b) involves the conversion of ADP and ATP.
	c) involves substrate-level phosphorylation.
	d) Both a and b
	e) Both b and c

Which of the following is the best definition offermentation?

	The reduction of glucose to pyruvic acid
	The complete catabolism of glucose to CO₂ andH₂O
	The oxidation of a carbohydrate with organic molecules servingas electron donors and acceptors
	The production of ATP from glucose
	The production of ethanol from glucose

A reaction that yields energy has a

	positive ?G_o?.
	negative ?G_o?.
	positive ?E_o?.
	negative ?E_o?.
	negative ?H_o?.

Oxidation and reduction reactions are always coupledbecause

	a) electrons generally accompany protons.
	b) protons generally accompany protons.
	c) electrons cannot exist free in solution.
	d) Both a and b
	e) All of the above

10.

Which of the following is true of aerobic respiration?

	It involves the reduction of oxygen.
	It involves the oxidation of oxygen.
	It involves the reduction of lactic acid.
	It involves the oxidation of lactic acid.
	It does not generate ATP.

plumgnu195

BSCI 223 Lecture Notes - Lecture 8: Thermodynamics, Antiseptic, Triclosan

Document Summary

Get access

Related Documents

BIOL 2051 Chapter : Micro Ch 15

BIOL 2051 Lecture Notes - Lecture 9: Glycolysis, Ethanol Fermentation, Rhizobium

BIOL 2051 Chapter : Ch 15 And 16

Related Questions