Answer
The answer is option A
Explanation:-
A) Buffers are used for the stabilizing pH of culture media for optimum growth of organism.
B) sugars are used as source of carbon.
C) PH is stabilized by buffer .
Also PH doesn't stabilized itself.
D) heat is used for sterilization of media.
E) carbon is obtained from sugars added in culture media.
the addition of which of the following to a culture medium will stabilize ph? a. buffers...
A microbiologist is preparing a medium on which to culture E. coli bacteria. She buffers the medium at pH 7.00 to minimize the effect of acid-producing fermentation. What volumes of equimolar aqueous solutions of K2HPO4 and KH2PO4 must she combine to make 750.0 mL of the pH 7.00 buffer? Ka values for phosphoric acid: Ka1 = 7.2 ×10−3 Ka2 = 6.3 ×10−8 Ka3 = 4.2 × 10−13 Volume H2PO4− = ??? mL Volume HPO42− = ??? mL
A microbiologist is preparing a medium on which to culture E. Colibacteria. She uses 1.0M K2HPO4 and 1.0M KH2PO4 as her conjugate acid/base pair. She buffers the medium at a pH of 7.00 to minimize the effect of acid-producing fermentation. She uses 50mL of the H2PO4-, how many mL of the HPO42- must be added. The Ka is 6.3x10-8.
A microbiologist is preparing a medium on which to culture E. Coli bacteria. She uses 1.5M Na2HPO4 and 1.5M KH2PO4 as her conjugate acid/base pair. She buffers the medium at a pH of 7.00 to minimize the effect of acid-producing fermentation. She uses 75mL of the H2PO4-, how many mL of the HPO42- must be added. The Ka is 6.3x10-8.
7:18 LTE 2. Culture medium in which an inhibitor, such as salt, has been added to prevent the growth of some 3. Buildup of microbes on solid surfaces in contact with water 4. The amount of time it takes for a bacterium to undergo one round of fission 10. Organisms that use chemicals as a source of 11. Organism that uses organic carbon to produce ATP 14. An organism capable of growing in temperatures above the boiling point of water...
O. DATA FROM EXERCISE 8.4 obffr7 A. Ability of Buffers to Stabilize the pll of Solutio L. Enter your data in these spaces 10 drops 12 plt of disáled water: y pli of water + 1 drop HCE pll of water + 1 drop NO pH of buffer: 7.000 pl of buffer+ 1 drep HC pH of baller + 1 drop NaOH pH ofbufer + 3 drops HiC pt of buffer+3 drops NaOH 1 draps of solutions Bxplain your anseres...
A culture medium consisting solely of dextrose and inorganic salts would be considered a ____________ medium. a. complete b. differential c. complex d. minimal e. selective
2) Which of the following statements about blood is false? A) It contains buffers that control pH. B) Normal pH is 6.8 to 7.0. C) It is more viscous than water. D) It is about 55 percent plasma. E) None of the statements are false; all are true.
A batch culture of E. coli was initiated with a medium containing 10 g/L of glucose, 2 g/L of ammonia, and 0.1 g/L of cells A batch culture of E. coli was initiated with a medium containing 10 g/L of glucose, 2 g/L of ammonia, and 0.1 g/L of cells. At the end of culture, 0.1 g/L of glucose remained in the medium. A total of 5.1 g/L of E. coli were recovered. The elemental composition of the cells was...
Buffers and pH Changes Tube pH Before Addition pH After Addition PH Change 4,5 pH Water + Acid Water + Base Buffer + Acid Buffer + Base S.SoH s.sph Tors of SpH 2 7 8 H PH Hydrolysis of lonic Compounds 2 NaCl NHACI FeCl3 pH 4-5 5 pH 3-4 PH 1-2 PA Na2CO3 Prediction pH 10-11 pH Measurement Il Titration of Sodium Carbonate Formula of Compound: Nazlog pH 1 매 니 0.432 Mass of Compound: 0.004 Vol. pH PH...
± pH Changes in Buffers Part A What is the pH of a buffer prepared by adding 0.708 mol of the weak acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×10−7. Express the pH numerically to three decimal places. Part B What is the pH after 0.150 mol of HCl is added to the buffer from Part A? Assume no volume change on the addition of the acid. Express...