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Question- Two different species of bacteria have been isolated from very disparate environments: one, a hot spring with an average water temperature of 40 C, the other a glacial lake with an average temperature of -4 C. Choose a total of three answers from the selections below. (One each for each of the questions A, B and C)
1) Which of the two bacterial species would be expected to have more unsaturated fatty acids in its membrane lipids?
2) Which would have longer-chain fatty acids?
3) At 27 C, which species would have a more fluid membrane?
Answer all 3 (Bacterium A 40 C...Bacterium B 4C)
State your answer by means of three significant figures.
The analysis of a gaseous compound revealed that it was 85.7% C and 14.3% H by mass. When 1.77 g of the gas is stored in a 1.500 L flask at 17oC it has a pressure of 1.10 atm. What is the molecular formula of the compound
Apamine is a small monomeric peptide toxin present in the venom of the honeybee. it has the sequence: CNCKAPETALCARRCQQH a)it is known that apamine does NOT react with iodoacetate. how many disulfide bonds are present?
What is the molecular weight of acetic acid that will form 2 moles of CO2 assuming complete combustion.
A solution 14.3 % (by mass) HCl. The density of the solution is 1.08 g/mL. What is the molarity of the solution
The balanced chemical equation is N2+O2 2NO.If more NO is added, bringing its concentration to 0.800 M, what will the final concentration of NO be after equilibrium is re-established
A 15.2 g steel sample that contains 10.69 g iron, 2.67 g chromium, 1.22 g nickel, 0.306 g manganese, 0.153 g silicon and 0.122g carbon. What is the concentration of each substance
This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generating H2 is desired. How many grams of CaH2 are needed to generate 16.0 L of H2 gas if the pressure of H2 is 750. torr at ..
What is the formula weight of KI? What quantity of KI is present in 301 mL of a 0.30 M solution?
Find the solubility of AgI in 2.5 M NH3 (Ksp of AgI = 8.3x10^-17 and Kf of Ag(NH3)^2+ = 1.7X10^7)
the barometric pressure in a cavern was measured using a mercury barometer. a value of 28.2 inches of hg was obtained.
when the following reaction is balanced in acid solution using the lowest possible whole number coefficients the
A first order decomposition reaction has a half-life of 60yr. What percentage of the original amount is left after 164years
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