(a) Interpretation: The stoichiometry of the synthesis of ribose 5 − phosphate from glucose 6 − phosphate without the generation of NADPH is to be stated. Concept introduction: The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

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Answer 1

Question

Chapter 20, Problem 31P

Interpretation Introduction

(a)

Interpretation:

The stoichiometry of the synthesis of ribose 5−phosphate from glucose 6−phosphate without the generation of NADPH is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Interpretation Introduction

(b)

Interpretation:

The stoichiometry of the synthesis of NADPH from glucose 6−phosphate without the generation of pentose sugar is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

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Example 1: 1. Suppose an enzyme (MW = 5,000 g/mole) has a concentration of 0.05 mg/L. If the kcat is 1 x 10 s, what is the theoretical maximum reaction velocity for the enzyme? A) 1050 µM/s. B) 100 µM/s. C) 150 μM/s. D) 105 μM/s.

In 1956, E. P. Kennedy and S. B. Weiss published their study of membrane lipid phosphatidylcholine (lecithin) synthesis in rat liver. Their hypothesis was that phosphocholine joined with some cellular component to yield lecithin. In an earlier experiment, incubating 32 P-labeled phosphocholine at physiological temperature (37 °C) with broken cells from rat liver yielded labeled lecithin. This became their assay for the enzymes involved in lecithin synthesis. Determine the optimal pH for this enzyme and characterize the enzyme activity at different pH values. -O-P-O-CH2-CH₁₂-N(CH3)3 Phosphocholine H₂C-O-C-R HC-O-C-R2 + + + Cell fraction + ? HC-O-P-O-CH₁₂-CH₂-N(CH), O Phosphatidylcholine The researchers then centrifuged the broken cell preparation to separate the membranes from the soluble proteins. They tested three preparations: whole extract, membranes, and soluble proteins. Table 1 summarizes the results. Table 1: Cell fraction requirement for incorporation of 32p-phosphocholine into…

Researchers isolated an unknown substance, X, from rabbit muscle. They determined its structure from the following observations and experiments. (a) Qualitative analysis showed that X was composed entirely of C, H, and O. A weighed sample of X was completely oxidized and the H2O and CO2 produced were measured. This quantitative analysis revealed that X contained 40.00% C, 6.71% H, and 53.29% O by weight. (b) The molecular mass of X, as determined by mass spectrometry, was 90.00 atomic mass units (u). (c) Infrared spectroscopy showed that X contained one double bond. (d) X dissolved readily in water, and the solution demonstrated optical activity when tested in a polarimeter. (e) The aqueous solution of X is acidic. What is the empirical formula of X?

Answer 2

Question

Chapter 20, Problem 31P

Interpretation Introduction

(a)

Interpretation:

The stoichiometry of the synthesis of ribose 5−phosphate from glucose 6−phosphate without the generation of NADPH is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Interpretation Introduction

(b)

Interpretation:

The stoichiometry of the synthesis of NADPH from glucose 6−phosphate without the generation of pentose sugar is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

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Answer 3

Question

Chapter 20, Problem 31P

Interpretation Introduction

(a)

Interpretation:

The stoichiometry of the synthesis of ribose 5−phosphate from glucose 6−phosphate without the generation of NADPH is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Interpretation Introduction

(b)

Interpretation:

The stoichiometry of the synthesis of NADPH from glucose 6−phosphate without the generation of pentose sugar is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

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Answer 4

Question

Chapter 20, Problem 31P

Interpretation Introduction

(a)

Interpretation:

The stoichiometry of the synthesis of ribose 5−phosphate from glucose 6−phosphate without the generation of NADPH is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Interpretation Introduction

(b)

Interpretation:

The stoichiometry of the synthesis of NADPH from glucose 6−phosphate without the generation of pentose sugar is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

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Answer 5

Chapter 20, Problem 31P

Interpretation Introduction

(a)

Interpretation:

The stoichiometry of the synthesis of ribose 5−phosphate from glucose 6−phosphate without the generation of NADPH is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Interpretation Introduction

(b)

Interpretation:

The stoichiometry of the synthesis of NADPH from glucose 6−phosphate without the generation of pentose sugar is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Answer 6

Chapter 20, Problem 31P

Interpretation Introduction

(a)

Interpretation:

The stoichiometry of the synthesis of ribose 5−phosphate from glucose 6−phosphate without the generation of NADPH is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Answer 7

Chapter 20, Problem 31P

Interpretation Introduction

(a)

Interpretation:

The stoichiometry of the synthesis of ribose 5−phosphate from glucose 6−phosphate without the generation of NADPH is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The stoichiometry of the synthesis of NADPH from glucose 6−phosphate without the generation of pentose sugar is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The stoichiometry of the synthesis of NADPH from glucose 6−phosphate without the generation of pentose sugar is to be stated.

Concept introduction:

The stoichiometry of a chemical species involved in a chemical reaction represents the number of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. The stoichiometry of a chemical species is also represented by a number of moles.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 20 - Prob. 1P Ch. 20 - Prob. 2P Ch. 20 - Prob. 3P Ch. 20 - Prob. 4P Ch. 20 - Prob. 5P Ch. 20 - Prob. 6P Ch. 20 - Prob. 7P Ch. 20 - Prob. 8P Ch. 20 - Prob. 9P Ch. 20 - Prob. 10P

Solution Summary: The author explains the stoichiometry of a chemical species involved in the chemical reaction.

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