BIOS 242 Week 3 Concepts; Metabolism

Week3Concepts:Metabolism FactorsaffectingMicrobialGrowth Prepare:FactorsAffectingMicrobialGrowth • Thephaseofthebacterialgrowthcurveinwhichtherateofmultiplicationequalstherateofcelldeathisthe .deathphase • AnorganismthatgrowsinlowerpHconditionsiscalleda . • Anorganismthatusesorganiccarbonforitscarbonneedsandsunlightforitsenergyneedswouldbecalleda . Self-Check:GrowthRequirementsinMicroorganisms • Place the images in order from top to bottom to show extracellular digestion in bacteria and fungi. Self-Check:SourcesofEnergy • Which type of organism will acquire energy from light and acquire nutrients via catabolism of organic compounds. • Which type of organism will acquire energy and Carbon via catabolism of organic compounds. Self-Check:IdentifytheOrganism • Organisms that live on dead animals and plants and digest food by secreting enzymes are called . Self-Check:TransportProcesses • Which type of solution will result in water entering the cell? Self-Check:TemperatureRequirements • Microorganisms that have a requirement for growth below 15°C are called . Self-Check:PatternsofOxygenUtilization • Which thioglycolate tube shows the growth of an obligate anaerobe. Self-Check:PopulationGrowth • Which phase of growth has limited nutrients and exponential death of cells? Self-Check:PhasesofPopulationGrowth • Match the following items to their corresponding description. Reflect:FactorsAffectingMicrobialGrowth • The methanogens, producers of methane gas, require environments that__________ • The phase of the bacterial growth curve that shows the maximum rate of cell division is the__________. • Bacteria living in a freshwater stream that are transferred to ocean water would__________ • A saprobe differs from a parasite in that__________ • An organism that uses CO2 for its carbon needs and sunlight for its energy needs would be called a__________. • Match the following terms to their corresponding description. • An organism with a temperature growth range of 45°C to 60°C would be called a(n)__________. Enzymes Prepare:Enzymes • Enzymes that function inside a cell are . • Enzymes can be regulated. • The term used to describe all of the chemical reactions within a cell is . • Enzymes are composed of Self-Check:TheRoleofEnzymes Self-Check:FactorsAffectingEnzymeActivity • Which of the following affect enzyme activity? Self-Check:EnzymeStructure • Holoenzymes _____ Self-Check:NamingEnzymes • Select the correct class for each drop-down based on the substrates and action provided. Self-Check:EnzymeLocation • Your bacterium is growing on a type of medium called casein agar, which contains milk protein (casein). There is a clear zone around the growth area of the bacterium, showing that it is synthesizing the enzymes needed to catalyze the extracellular breakdown of casein. These enzymes are considered . Self-Check:EnzymeRegulation • Constitutive enzymes ____ . Self-Check:EnzymeInhibition • When enzyme action stops due to a buildup of end product that acts as a regulatory molecule, this control is called__________ . Reflect:Enzymes • Enzymes lower the__________. • Match the following enzyme names with their reactions. • When a molecule regulates the activity of an enzyme by binding to a site outside of the active site, it is known as a/an__________. • A holoenzyme is a combination of a protein and one or more substances called__________. • Enzymes that are retained and function inside of a cell are known as__________ . • Increasing the amount of the enzyme will increase the__________. • Binding of the substrate to the enzyme produces a/an complex__________. • The formation of peptide bonds between amino acids to build a polypeptide is an example of__________. • The structure of the enzyme dictates the binding site of the substrate__________. • A is an organic molecule needed to form a holoenzyme__________. • The binding site for the substrate is the__________. • A/an will slow down or stop enzyme activity__________. • A mimics the shape of the substrate__________. Prepare:Metabolism Metabolism • Duringaerobiccellularrespiration,thefinalelectronacceptoris . • Thetermusedtodescribethereactionswhichbreakdownlargermacromoleculesintosimplermoleculeswithinacellis . • Thecell'smetabolicreactionsinvolvetheparticipationof that lower the activation energy needed for theinitiationofareaction. Self-Check:MetabolismofMicrobes • The formation of peptide bonds between amino acids to build a polypeptide is an example of . Self-Check:Glycolysis • When glucose is broken down by glycolysis during bacterial fermentation, what is the usual net production of ATP? Self-Check:CellularRespiration • Selectthelocationoftheprocess. Self-Check:Fermentation • Fermentation . Self-Check:AnaerobicRespiration • Label the pathways. Reflect:Metabolism • The formation of citric acid from oxaloacetic acid and an acetyl group begins__________. • During anaerobic respiration a common final electron acceptor is__________. • Oxygen reacts with hydrogen to produce __________ in the electron transport chain. • As the electron transport carriers shuttle electrons, they actively pump__________ into the outer membrane compartment, setting up a concentration gradient called the proton motive force. • The reactions of fermentation function to produce__________molecules for further use in glycolysis. • In the cell, energy released by electrons is often used to phosphorylate__________. • In bacterial cells, the electron transport system is located in the__________ . • The Kreb’s cycle generates the most__________. • Match the following processes to the correct location. • The majority of ATP is formed during__________.