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Biochemistry

05/10/20

biochemistry questions

20. Which of the following mechanisms of allosteric enzymes activation is correct? a They induce the denaturation of an apoenzyme b They block the enzyme active centre c They change the... more

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Biochemistry Chemistry Organic Chemistry

05/09/20

Why do we sweat order to cool off?

Drops of water and ethanol are placed on an overhead projector and the ethanol drop is seen to evaporate more rapidly. Our bodies utilize sweating as a means to stay cool and maintain... more

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Biochemistry

05/09/20

Using molarity to find solute mass and solution volume

Calculate the volume in liters of a 0.00599 mM calcium sulfate solution that contains 25.0g of calcium sulfate . Be sure your answer has the correct number of significant digits

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Biochemistry Science Biology

05/07/20

Calculate the number of ATPs generated by completely oxidizing one molecule of tripalmitoylglycerol into CO2 and H2O in muscle tissues.

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Biochemistry Chemistry Organic Chemistry

05/06/20

For chromium, Cr, the heat of fusion at its normal melting point of 1860 °C is 14.6 kJ/mol.

For chromium, Cr, the heat of fusion at its normal melting point of 1860 °C is 14.6 kJ/mol.The entropy change when 1.61 moles of solid Cr melts at 1860 °C, 1 atm is _____ JK-1.

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Biochemistry Chemistry Organic Chemistry

05/06/20

Arrange the substances on the left in order of increasing entropy. Assume 1 mole of each at standard conditions.

Arrange the substances on the left in order of increasing entropy. Assume 1 mole of each at standard conditions. match them in orderl SnCl4(l) Sn(OH)2(s) SnCl4(g) SnO(s) 1) lowest... more

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Biochemistry Biology Chemistry Organic Chemistry

05/06/20

Water can decompose into H2 and O2 via electrolysis. How many moles of H2 could theoretically be obtained from 87.5 g of water. theoretical yeild: mol H2

Water can decompose into H2 and O2 via electrolysis. How many moles of H2 could theoretically be obtained from 87.5 g of water. theoretical yeild=:________________ mol H2

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Biochemistry Chemistry Organic Chemistry

05/06/20

Drawing Amino Acids (Organic Chem)

Draw the tetrapeptide below out in full chemical structure by attaching the four amino acids from your amino in order (this is an application of the characteristic organic reaction Formation of an... more

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Biochemistry

05/04/20

biochem assignment

predict how changing Trp105 to alanine would affect the ability of CEL-I to interact with GalNAc. A complete answer will describe the chemical role of Trp105 in GalNAc binding, how Trp and Ala... more

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Biochemistry

05/03/20

Percent yield of chemical reactions

Aqueous sulfuric acid reacts with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water . If 2.15g of water is produced from the reaction of 34.3g of sulfuric acid and 12.9g... more

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Biochemistry

05/02/20

I need help with this question please!

Choose which characteristics are key features of the genetic code.Three nucleotides encode an amino acid.The code is degenerate.The code has directionality.The code is overlapping.The code has... more

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Biochemistry Biology Microbiology

04/30/20

Fermentation questions.

Fermentation questions.Fermentation Which gas is produced during the process of fermentation and is measured in fermentation tubes? What was the negative control in this experiment? When yeast is... more

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Biochemistry Chemistry Organic Chemistry

04/30/20

Chem help please.3?

Calculate the mass of Li formed by electrolysis of molten LiCl by a current of 7.6 * 10 ^ 4 * A flowing for a period of 30 h. Assume the electrolytic cell is 90 % efficient.i did this and... more

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Biochemistry Math Chemistry Organic Chemistry

04/30/20

Chem help please.1?

What is the emf of this cell when [Fe^ 2+ ]=1.1M [Fe^ 3+ ] =2.0*10^ -2 M,P O 2 = 0.45 atm and the pH of the solution in the cathode compartment is 3.2.A voltaic cell utilizes the following... more

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Biochemistry Math Chemistry

04/30/20

Chem help please?

The starting voltage of a fresh alkaline battery is 1.45 V The voltage decreases during discharge and is 0.70 V when the battery has delivered its rated capacity If we assume that the voltage... more

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Biochemistry Chemistry Organic Chemistry

04/30/20

Chemistry help please?

Under standard conditions what is the maximum electrical work in joules that the cell can accomplish if 67.0 g of Sn is consumed? A voltaic cell is based on the reactionSn(s)+I2(s)—>Sn^2+(aq) +... more

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Biochemistry

04/29/20