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Exam 14: Proteins

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Question 1

True/False

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Both isoleucine and alanine can be synthesized from other nutrients.

A) True
B) False

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Question 2

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Pyruvate dehydrogenase contains a Mg²⁺ ion. The magnesium ion is called a coenzyme.

A) True
B) False

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Question 3

Multiple Choice

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Protein denaturation results in a disruption of the

The reaction in the breakdown of amino acids that involves the removal of nitrogen is

An alpha amino acid contains

How many different amino acids are commonly found in proteins?

Consider the following representation of an enzyme-catalyzed reaction. This image could represent the reaction in which lactase catalyzes the hydrolysis of lactose (a disaccharide)into glucose and galactose (two monosaccharides). Fill in the blanks with the appropriate letter (A,B,C,D,....)from the image. -A competitive inhibitor would resemble _____________________.

What is the three-letter representation for the peptide given below?

Is it possible for a person who consumes substantial amounts of protein in their diet to suffer from protein deficiency? Explain.

Draw two ways serine can hydrogen bond with water.

Consider the following representation of an enzyme-catalyzed reaction. This image could represent the reaction in which lactase catalyzes the hydrolysis of lactose (a disaccharide)into glucose and galactose (two monosaccharides). Fill in the blanks with the appropriate letter (A,B,C,D,....)from the image. -The reactants, water and lactose, are represented in the image by __________________ and _________________.

The following amino acid would be found in the interior of a protein.

An amino acid can be correctly characterized as:

Consider the following representation of an enzyme-catalyzed reaction. This image could represent the reaction in which lactase catalyzes the hydrolysis of lactose (a disaccharide)into glucose and galactose (two monosaccharides). Fill in the blanks with the appropriate letter (A,B,C,D,....)from the image. -Galactose could be represented by __________________.

During the urea cycle, nitrogen is removed from amino acids and subsequently converted it to urea.

Nonessential amino acids are those which can be synthesized by the body.

Total nitrogen in the diet must provide enough nitrogen for the synthesis of

Consider the following representation of an enzyme-catalyzed reaction. This image could represent the reaction in which lactase catalyzes the hydrolysis of lactose (a disaccharide)into glucose and galactose (two monosaccharides). Fill in the blanks with the appropriate letter (A,B,C,D,....)from the image. -The active site of the enzyme is represented by ___________________.

Consider the amino acid sequence given below. Gly-Ala-Thr-Cys Ala would be considered

Addition of 0.050 M NaOH to a protein solution would have the most profound effect on which of the listed amino acids?