Question 1

Which of the following statements is not true of triglycerides?

Accepted Answer

A) Triglycerides are esters that are formed during the reaction of an alcohol function and a carboxylic acid function. 
B) Triglycerides are easily hydrolyzed into glycerol and free fatty acids. 
C) The dietary fats we ingest are mostly triglycerides. 
D) The fatty acids that are found in a single triglyceride molecule are always the same. 
A) Triglycerides are esters that are formed during the reaction of an alcohol function and a carboxylic acid function. 
B) Triglycerides are easily hydrolyzed into glycerol and free fatty acids. 
C) The dietary fats we ingest are mostly triglycerides. 
D) The fatty acids that are found in a single triglyceride molecule are always the same. D

Question 2

The biuret reaction is the most common technique for measuring total serum protein.The biuret reaction is directed toward what part of the protein complex?

Accepted Answer

A) the secondary structure 
B) the tertiary structure 
C) the peptide linkage 
D) the prosthetic group 
A) the secondary structure 
B) the tertiary structure 
C) the peptide linkage 
D) the prosthetic group C

Question 3

Which of the following compounds lack water solubility and require transport molecules for movement through the blood stream?

Accepted Answer

A) proteins 
B) lipids 
C) carbohydrates 
D) both a and b 
A) proteins 
B) lipids 
C) carbohydrates 
D) both a and b B

Question 4

The spatial arrangement of a linear chain of amino acids from which folding results in specific three-dimensional patterns such as the beta-pleated sheet and the alpha helix is known as a protein's _____ structure.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 5

Which of the following lipids plays an important role in the esterification of free cholesterol and serves as an important constituent of functional lung surfactant?

Accepted Answer

A) cerebrosides 
B) lecithins 
C) sphingomyelins 
D) plasmalogens 
A) cerebrosides 
B) lecithins 
C) sphingomyelins 
D) plasmalogens

Question 6

The three-dimensional spatial arrangement of multiple polypeptide chains forming larger, more stable complexes is known as a protein's _____ structure.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 7

The order or sequence of amino acids in a protein as determined by genetic code is known as a protein's _____ structure.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 8

_____ is the physiological glucose storage form.

Accepted Answer

A) amylase 
B) amylopectin 
C) glycogen 
D) starch 
A) amylase 
B) amylopectin 
C) glycogen 
D) starch

Question 9

The overall three-dimensional structure and folding pattern of the complete protein that confers on the protein its specific biological properties is known as the protein's _____ structure.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 10

Which of the following are characteristics of denatured proteins?
1)Denatured proteins lose their biological activity.
2)Denatured proteins lose their water solubility.
3)Denatured proteins lose their tertiary structure.

Accepted Answer

A) 1, 2, 3 
B) 1, 2 
C) 2, 3 
D) 1, 3 
A) 1, 2, 3 
B) 1, 2 
C) 2, 3 
D) 1, 3

Question 11

Pyranoses are formed from monosaccharides with a/an ______, and furanoses are formed from monosaccharides with a/an ______.

Accepted Answer

A) aldehyde function at carbon-1, ketone function at carbon-2 
B) ketone function at carbon-1, aldehyde function at carbon-2 
C) aldehyde function at carbon-2, ketone function at carbon-1 
D) ketone function at carbon-2, aldehyde function at carbon-1 
A) aldehyde function at carbon-1, ketone function at carbon-2 
B) ketone function at carbon-1, aldehyde function at carbon-2 
C) aldehyde function at carbon-2, ketone function at carbon-1 
D) ketone function at carbon-2, aldehyde function at carbon-1

Question 12

The chemical structure of nucleotides contains which of the following combination of chemical groups?

Accepted Answer

A) a 5-carbon cyclic carbohydrate bound to a purine or pyrimidine base 
B) a 6-carbon cyclic carbohydrate bound to a purine or pyrimidine base 
C) a 5-carbon cyclic carbohydrate bound to a purine or pyrimidine base and a phosphate group 
D) a 6-carbon cyclic carbohydrate bound to a purine or pyrimidine base and a phosphate group 
A) a 5-carbon cyclic carbohydrate bound to a purine or pyrimidine base 
B) a 6-carbon cyclic carbohydrate bound to a purine or pyrimidine base 
C) a 5-carbon cyclic carbohydrate bound to a purine or pyrimidine base and a phosphate group 
D) a 6-carbon cyclic carbohydrate bound to a purine or pyrimidine base and a phosphate group

Question 13

Which of the following best describes the makeup of phospholipids?

Accepted Answer

A) glycerol and three fatty acid residues 
B) glycerol, two fatty acid residues, and a phosphoric acid residue 
C) glycerol and three phosphoric acid residues 
D) glycerol, two fatty acid residues, one phosphoric acid residue, and a nitrogen-containing residue 
A) glycerol and three fatty acid residues 
B) glycerol, two fatty acid residues, and a phosphoric acid residue 
C) glycerol and three phosphoric acid residues 
D) glycerol, two fatty acid residues, one phosphoric acid residue, and a nitrogen-containing residue

Question 14

The lipid that serves as the precursor of many hormones such as androgens, estrogens, and progesterones is:

Accepted Answer

A) triglycerides 
B) cholesterol 
C) gangliosides 
D) cephalins 
A) triglycerides 
B) cholesterol 
C) gangliosides 
D) cephalins

Question 15

Complementary base pairing, such as that between cytosine and guanine, involves what type of bonding?

Accepted Answer

A) peptide bonding 
B) hydrogen bonding 
C) glycosidic bonding 
D) ester bonding 
A) peptide bonding 
B) hydrogen bonding 
C) glycosidic bonding 
D) ester bonding

Question 16

Monosaccharides can be linked to other monosaccharides or other biomolecules through the formation of:

Accepted Answer

A) peptide linkages 
B) hydrogen bond linkages 
C) glycosidic linkages 
D) ester linkages 
A) peptide linkages 
B) hydrogen bond linkages 
C) glycosidic linkages 
D) ester linkages

Exam 27: Classification and Description of Proteins, Lipids, and Carbohydrates

Which of the following statements is not true of triglycerides?

The biuret reaction is the most common technique for measuring total serum protein.The biuret reaction is directed toward what part of the protein complex?

Which of the following compounds lack water solubility and require transport molecules for movement through the blood stream?

The spatial arrangement of a linear chain of amino acids from which folding results in specific three-dimensional patterns such as the beta-pleated sheet and the alpha helix is known as a protein's _____ structure.

Which of the following lipids plays an important role in the esterification of free cholesterol and serves as an important constituent of functional lung surfactant?

The three-dimensional spatial arrangement of multiple polypeptide chains forming larger, more stable complexes is known as a protein's _____ structure.

The order or sequence of amino acids in a protein as determined by genetic code is known as a protein's _____ structure.

_____ is the physiological glucose storage form.

The overall three-dimensional structure and folding pattern of the complete protein that confers on the protein its specific biological properties is known as the protein's _____ structure.

Which of the following are characteristics of denatured proteins? 1)Denatured proteins lose their biological activity. 2)Denatured proteins lose their water solubility. 3)Denatured proteins lose their tertiary structure.

Pyranoses are formed from monosaccharides with a/an ______, and furanoses are formed from monosaccharides with a/an ______.

The chemical structure of nucleotides contains which of the following combination of chemical groups?

Which of the following best describes the makeup of phospholipids?

The lipid that serves as the precursor of many hormones such as androgens, estrogens, and progesterones is:

Complementary base pairing, such as that between cytosine and guanine, involves what type of bonding?

Monosaccharides can be linked to other monosaccharides or other biomolecules through the formation of:

Basic Laboratory Principles and Techniques

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Chromatography and Mass Spectrometry: Theory, Practice, and Instrumentation

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Laboratory Analysis of Hemoglobin Variants

Electrophoresis

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Principles for Competitive-Binding Assays

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Electrochemistry: Principles and Measurement

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Filters

Pyranoses are formed from monosaccharides with a/an , and furanoses are formed from monosaccharides with a/an .