1,708 Answered Questions for the topic biochemistry

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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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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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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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

Biochemistry Question
b.) Describe the process of glycogenolysis step by step. [10]
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Biochemistry

04/29/20

Biochemistry/Glycogenolysis
a) Outline how glycogenolysis is regulated in the liver and muscle. [10] 
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Biochemistry

04/29/20

Biochemistry Question and overproduction of ketone bodies
b) Briefly account for the overproduction of ketone bodies in diabetes mellitus and starvation. [5] 
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04/29/20

Describe how the processes of boiling, sublimation, and efflorescence are similar.
Describe how the processes of boiling, sublimation, and efflorescence are similar.
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04/29/20

Consider the following list of compounds: MgSO4, C2H2, CH4, CaO. Which compounds are most likely to dissolve in water?
Consider the following list of compounds: MgSO4, C2H2, CH4, CaO. Which compounds are most likely to dissolve in water?
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04/29/20

Using data from the figure, graph the density as a function of the temperature for liquid water from 100°C to 4°C.
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04/29/20

Hydrogen fluoride (HF) has a lower boiling point than water (H2O), even though fluoride (F) has a greater electronegativity than oxygen (O). Why do you think that is?
Hydrogen fluoride (HF) has a lower boiling point than water (H2O), even though fluoride (F) has a greater electronegativity than oxygen (O). Why do you think that is?
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04/29/20

Printers often use surfactants in the printing of paper with ink. Explain why this might be.
Printers often use surfactants in the printing of paper with ink. Explain why this might be.
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04/29/20

Why is water (H2O) a liquid at room temperature while carbon dioxide (CO2) is a gas? What’s different about their structures that results in very different properties?
Why is water (H2O) a liquid at room temperature while carbon dioxide (CO2) is a gas? What’s different about their structures that results in very different properties?
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04/29/20

If 1 mole of each of the solutes listed below is dissolved in 1 L of water, which solute will have the greatest effect on the vapor pressure of its respective solution?

Which is the correct answer?A) C6H12O6B) CaSO4C) KBrD) MgCl2
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04/29/20

Calculate the boiling point elevation of a solution containing 43.8 g of glucose (C6H12O6) dissolved in 359.9 g of water. Calculate the freezing point depression for the same solution.
boiling point elevation = _____ degrees Celsiusfreezing point depression = ____ degrees Celsius
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04/28/20

A scientist measures the standard enthalpy change for the following reaction to be 593.6 kJ:
A scientist measures the standard enthalpy change for the following reaction to be 593.6 kJ:2H2O(l)  2H2(g) + O2(g)Based on this value and the standard enthalpies of formation for the other... more
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04/28/20

The standard enthalpy change for the following reaction is -1.39×103 kJ at 298 K. 
The standard enthalpy change for the following reaction is -1.39×103 kJ at 298 K.  3 Mn(s) + 2 O2(g)Mn3O4(s)    ΔH° = -1.39×103 kJ  What is the standard enthalpy change for the reaction Mn3O4(s)3... more
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04/28/20

what is the standard enthalpy change for the reaction:
Given the standard enthalpy changes for the following two reactions:(1) 2Ni(s) + O2(g)2NiO(s)......H° = -479.4 kJ(2) 2Zn(s) + O2(g)2ZnO(s)......H° = -696.6 kJwhat is the standard enthalpy change... more
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Biochemistry Biology Microbiology

04/28/20

chi square question for biology

Chi SquareConsider the scenario where one parent is type AB blood and the other parent is heterozygous for type B blood. A sample of 150 couples collectively produced a total of 38 children... more
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04/28/20

What is the value of H for the chemical equation givenWhat is the value of H for the chemical equation given
The reaction of  carbon monoxide(g) with hydrogen(g) to form methane(g) and water(g) proceeds as follows:CO(g) + 3H2(g) CH4(g) + H2O(g) When 7.45 grams of CO(g) react with... more
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