Proteins and Their Functions Quiz

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What do proteins do in the form of enzymes, hormones, antibodies, and globulins?

Catalyze, regulate, and protect the body chemistry (correct)

Hold together, protect, and provide structure to the body

Transport oxygen and other natural α-amino acids

Effect the breakdown of amino acids

What is the primary structural unit of proteins?

Polypeptides (correct)

Globulins

Lipoproteins

Enzymes

How are dietary proteins related to essential amino acids?

Dietary proteins are not a source of essential amino acids

Dietary proteins inhibit the absorption of essential amino acids

Dietary proteins are the source of essential amino acids (correct)

Dietary proteins contain all amino acids except the essential ones

What is the meaning of the Greek word 'proteios' from which the term 'proteins' is derived?

First Signup and view all the answers

What is the result of boiling aqueous acid or base with proteins?

Yields an assortment of small molecules identified as α-aminocarboxylic acids Signup and view all the answers

How many types of amino acids make up a protein?

$20$ Signup and view all the answers

Which type of amino acids can be obtained through our diet?

Essential amino acids Signup and view all the answers

What is the function of insulin?

Hormone Signup and view all the answers

What bonds connect the amino group of one amino acid to the carboxyl group of the other amino acid in a protein chain?

Peptide bonds Signup and view all the answers

What is determined by the sequence of amino acids in the protein chain?

Primary Structure Signup and view all the answers

Which type of secondary structure has a right-handed coiled strand?

α-helix Signup and view all the answers

What type of bonding makes the α-helix structure especially stable?

Hydrogen bonds between the oxygen of each C=O bond and the hydrogen of each N-H group Signup and view all the answers

What type of tertiary structure shows specific local structural conformations dependent on hydrogen bonding?

ß-sheet Signup and view all the answers

What classifies proteins based on their sequence of amino acids in the chain?

Primary Structure Signup and view all the answers

Which structural conformation consists of pairs of strands lying side-by-side, with carbonyl oxygens in one strand bonding with the amino hydrogens of the adjacent strand?

ß-sheet Signup and view all the answers

What is the primary structural unit of proteins?

Amino acid Signup and view all the answers

What type of bonding makes the α-helix structure especially stable?

Hydrogen bonding Signup and view all the answers

What is determined by the sequence of amino acids in the protein chain?

Primary structure Signup and view all the answers

What is the result of boiling aqueous acid or base with proteins?

Hydrolysis Signup and view all the answers

What do proteins do in the form of hemoglobin, myoglobin, and various lipoproteins?

Effect the transport of oxygen and other substances Signup and view all the answers

How are dietary proteins related to essential amino acids?

Dietary proteins are the source of essential amino acids Signup and view all the answers

Which of the following types of proteins carries out the function of transporting nutrients across cell membranes?

Globulins Signup and view all the answers

In which type of protein structure is the sequence of amino acids in the protein chain determined?

Primary Structure Signup and view all the answers

What type of bonding is responsible for making the α-helix structure especially stable?

Hydrogen Bonds Signup and view all the answers

Which type of secondary structure consists of pairs of strands lying side-by-side, with carbonyl oxygens in one strand bonding with the amino hydrogens of the adjacent strand?

ß-sheet Signup and view all the answers

Which amino acid conformation depends on hydrogen bonding and consists of right-handed coiled strands with stable hydrogen bonds?

α-helix Signup and view all the answers

What is the main function of insulin, a type of protein?

Hormone Regulation Signup and view all the answers

Which type of protein can fight infectious agents in living organisms?

Globulins Signup and view all the answers

What determines the local structural conformations of proteins dependent on hydrogen bonding?

Secondary Structure Signup and view all the answers

What kind of bond connects the carboxyl group of one amino acid with the amino group of another amino acid in a protein chain?

Peptide bond Signup and view all the answers

In what form do some proteins function as within living organisms?

Enzyme form Signup and view all the answers

What are proteins formed by and what type of bond connects their amino acids to each other?

Formed by amino acids; connected by peptide bonds Signup and view all the answers

Proteins and Their Functions Quiz

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Questions and Answers

What do proteins do in the form of enzymes, hormones, antibodies, and globulins?

What is the primary structural unit of proteins?

How are dietary proteins related to essential amino acids?

What is the meaning of the Greek word 'proteios' from which the term 'proteins' is derived?

What is the result of boiling aqueous acid or base with proteins?

How many types of amino acids make up a protein?

Which type of amino acids can be obtained through our diet?

What is the function of insulin?

What bonds connect the amino group of one amino acid to the carboxyl group of the other amino acid in a protein chain?

What is determined by the sequence of amino acids in the protein chain?

Which type of secondary structure has a right-handed coiled strand?

What type of bonding makes the α-helix structure especially stable?

What type of tertiary structure shows specific local structural conformations dependent on hydrogen bonding?

What classifies proteins based on their sequence of amino acids in the chain?

Which structural conformation consists of pairs of strands lying side-by-side, with carbonyl oxygens in one strand bonding with the amino hydrogens of the adjacent strand?

What is the primary structural unit of proteins?

What type of bonding makes the α-helix structure especially stable?

What is determined by the sequence of amino acids in the protein chain?

What is the result of boiling aqueous acid or base with proteins?

What do proteins do in the form of hemoglobin, myoglobin, and various lipoproteins?

How are dietary proteins related to essential amino acids?

Which of the following types of proteins carries out the function of transporting nutrients across cell membranes?

In which type of protein structure is the sequence of amino acids in the protein chain determined?

What type of bonding is responsible for making the α-helix structure especially stable?

Which type of secondary structure consists of pairs of strands lying side-by-side, with carbonyl oxygens in one strand bonding with the amino hydrogens of the adjacent strand?

Which amino acid conformation depends on hydrogen bonding and consists of right-handed coiled strands with stable hydrogen bonds?

What is the main function of insulin, a type of protein?

Which type of protein can fight infectious agents in living organisms?

What determines the local structural conformations of proteins dependent on hydrogen bonding?

What kind of bond connects the carboxyl group of one amino acid with the amino group of another amino acid in a protein chain?

In what form do some proteins function as within living organisms?

What are proteins formed by and what type of bond connects their amino acids to each other?

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