Exam 2: Physical Biochemistry: Energy Conversion,water,and Membranes

Water is a simple molecule that has three distinct properties.What are these properties and how are they critical for life processes?

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Question 1

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Water is less dense as a solid than a liquid,which allows water to float.Water is a liquid over a wide range of temperatures,which allows for the existence of aquatic life and oxygen content in the atmosphere.Water is an excellent solvent that is polar and can solvate ions and polar molecules.Hydrogen bonding within water is also important as it keeps water as a solvent over a much larger temperature range then would be expected.

If for a reaction,then this reaction

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If serum pH falls blow pH 7.4,a condition called acidosis,how does the body respond?

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The equilibrium of the carbonic acid-bicarbonate reaction is shifted toward H₂CO₃ formation to decrease H⁺ concentration and thereby increase the pH.This is done by lowering CO₂ through hyperventilation and decreasing excretion of HCO₃^- by the kidneys.

If the equilibrium constant (K_eq)is greater than 1,what is the value of ?

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Question 4

Compare the reaction conditions under which you measure K_eq versus Q.

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Question 5

Given 80 grams of water,how many calories are required to raise the temperature ?

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Question 6

In the figure below,which state of matter has the highest entropy?

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Question 7

The effects of solutes on the colligative properties of a solution depend only on the

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Question 8

Calculate the pH of a solution containing 0.105 M HA and 0.146 M A^-.The Ka for the weak acid is 1.8 10^-⁵.

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Question 9

In the figure below,label which reactions are oxidations and which are reduction.

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Question 10

The lateral mobility of lipids with membrane depends on temperature as well as other factors.What would be expected to happen to the lateral mobility if the temperature was decreased?

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Question 11

Red blood cells are placed into a solution of unknown solute concentration.After an hour they have all burst open.The best explanation is that the solution

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Question 12

An organism in equilibrium with its environment is no longer alive because

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Question 13

Given the energy charge equation below,if a biological system has an EC = 0.8,what is true about the concentrations of ATP,ADP,and AMP in the system?

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Question 14

The __________ system controls the interconversion among ATP,ADP,and AMP.

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Question 15

If the equilibrium constant (K_eq)is greater than 1,which direction will the reaction proceed?

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Question 16

Which of the following is true?

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Question 17

You wish to prepare a solution with a pH of 5.44.If the pKa of the weak acid is 4.74,what ratio of weak base to weak acid should you use?

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Question 18

The main function of the chloroplast is

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Question 19

Given a biological system at 1 atm with = 16 kJ/g,what is the internal energy of the system?

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Question 20

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Exam 2: Physical Biochemistry: Energy Conversion,water,and Membranes

Water is a simple molecule that has three distinct properties.What are these properties and how are they critical for life processes?

If for a reaction,then this reaction

If serum pH falls blow pH 7.4,a condition called acidosis,how does the body respond?

If the equilibrium constant (Keq)is greater than 1,what is the value of ?

Compare the reaction conditions under which you measure Keq versus Q.

Given 80 grams of water,how many calories are required to raise the temperature ?

In the figure below,which state of matter has the highest entropy?

The effects of solutes on the colligative properties of a solution depend only on the

Calculate the pH of a solution containing 0.105 M HA and 0.146 M A-.The Ka for the weak acid is 1.8 10-5.

In the figure below,label which reactions are oxidations and which are reduction.

The lateral mobility of lipids with membrane depends on temperature as well as other factors.What would be expected to happen to the lateral mobility if the temperature was decreased?

Red blood cells are placed into a solution of unknown solute concentration.After an hour they have all burst open.The best explanation is that the solution

An organism in equilibrium with its environment is no longer alive because

Given the energy charge equation below,if a biological system has an EC = 0.8,what is true about the concentrations of ATP,ADP,and AMP in the system?

The __________ system controls the interconversion among ATP,ADP,and AMP.

If the equilibrium constant (Keq)is greater than 1,which direction will the reaction proceed?

Which of the following is true?

You wish to prepare a solution with a pH of 5.44.If the pKa of the weak acid is 4.74,what ratio of weak base to weak acid should you use?

The main function of the chloroplast is

Given a biological system at 1 atm with = 16 kJ/g,what is the internal energy of the system?

Principles of Biochemistry

Nucleic Acid Structure and Function

Protein Structure

Methods in Protein Biochemistry

Protein Function

Enzyme Mechanisms

Cell Signaling Systems

Glycolysis: a Paradigm of Metabolic Regulation

The Citrate Cycle

Oxidative Phosphorylation

Photosynthesis

Carbohydrate Structure and Function

Carbohydrate Metabolism

Lipid Structure and Function

Lipid Metabolism

Amino Acid Metabolism

Nucleotide Metabolism

Metabolic Integration

Dna Replication, repair, and Recombination

Rna Synthesis, processing, and Gene Silencing

Protein Synthesis, posttranslational Modification, and Transport

Gene Regulation

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If the equilibrium constant (K_eq)is greater than 1,what is the value of ?

Compare the reaction conditions under which you measure K_eq versus Q.

Calculate the pH of a solution containing 0.105 M HA and 0.146 M A^-.The Ka for the weak acid is 1.8 10^-⁵.

If the equilibrium constant (K_eq)is greater than 1,which direction will the reaction proceed?