Question 1

Which of these molecules contains the blueprints for proteins?

Accepted Answer

A) Lipids 
B) Nucleic acids 
C) Carbohydrates 
D) Vitamins 
E) Plasma 
A) Lipids 
B) Nucleic acids 
C) Carbohydrates 
D) Vitamins 
E) Plasma B

Question 2

Which of these proteins is an antibacterial agent found in mucus and tears?

Accepted Answer

A) Hemoglobin 
B) Keratin 
C) Insulin 
D) Lysozyme 
E) Valine 
A) Hemoglobin 
B) Keratin 
C) Insulin 
D) Lysozyme 
E) Valine D

Question 3

Which of these molecules controls a majority of our body's chemistry?

Accepted Answer

A) Lipids 
B) Nucleic acids 
C) Carbohydrates 
D) Proteins 
E) Plasma 
A) Lipids 
B) Nucleic acids 
C) Carbohydrates 
D) Proteins 
E) Plasma D

Question 4

Which of these is the correct general formula of a carbohydrate?

Accepted Answer

A) ROH 
B) CH2O 
C) COOH 
D) C2H2 
E) CHO 
A) ROH 
B) CH2O 
C) COOH 
D) C2H2 
E) CHO

Question 5

Which of these molecules is the primary structural component in biomembranes?

Accepted Answer

A) Lipids 
B) Nucleic acids 
C) Carbohydrates 
D) Proteins 
E) Plasma 
A) Lipids 
B) Nucleic acids 
C) Carbohydrates 
D) Proteins 
E) Plasma

Question 6

Which of these proteins is an example of a protein which acts as an enzyme?

Accepted Answer

A) Hemoglobin 
B) Insulin 
C) Keratin 
D) Lysozyme 
E) Actin 
A) Hemoglobin 
B) Insulin 
C) Keratin 
D) Lysozyme 
E) Actin

Question 7

Which of these determines the secondary structure of a protein?

Accepted Answer

A) The sequence of amino acids. 
B) The ratio of acidic amino acids to basic amino acids. 
C) The number of hydrogen bonds which a sequence can form with itself. 
D) The number of alpha helices and pleated sheets along the axis of the protein. 
E) Both C and D are correct. 
A) The sequence of amino acids. 
B) The ratio of acidic amino acids to basic amino acids. 
C) The number of hydrogen bonds which a sequence can form with itself. 
D) The number of alpha helices and pleated sheets along the axis of the protein. 
E) Both C and D are correct.

Question 8

Which of these statements about triglycerides is correct ?

Accepted Answer

A) Triglycerides are made from a combination of fatty acids and glycerol. 
B) Unsaturated triglycerides will be liquids at room temperature. 
C) Triglycerides can act as moisturizers to prevent dryness. 
D) Fats and oils serve as insulation for the body. 
E) All of these are correct. 
A) Triglycerides are made from a combination of fatty acids and glycerol. 
B) Unsaturated triglycerides will be liquids at room temperature. 
C) Triglycerides can act as moisturizers to prevent dryness. 
D) Fats and oils serve as insulation for the body. 
E) All of these are correct.

Question 9

Which of these represents the correct general formula for a fatty acid??

Accepted Answer

A) RCO 
B)    
C)    
D)    
E)    
A) RCO 
B)    
C)    
D)    
E)

Question 10

The alpha helix structure is the ____ structure of proteins.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
E) None of the above 
A) primary 
B) secondary 
C) tertiary 
D) quaternary 
E) None of the above

Question 11

Which of these substances is used in recombinant DNA technology to cut DNA at specific locations in the nucleotide sequence?

Accepted Answer

A) mRNA 
B) Codon 
C) Ribosome 
D) Restriction enzyme 
E) Lysozyme 
A) mRNA 
B) Codon 
C) Ribosome 
D) Restriction enzyme 
E) Lysozyme

Question 12

All amino acids contain which functional group?

Accepted Answer

A) Carboxylic acid 
B) Alcohol 
C) Amine 
D) Amide 
E) More than one of the above 
A) Carboxylic acid 
B) Alcohol 
C) Amine 
D) Amide 
E) More than one of the above

Question 13

How many different amino acids are there in humans?

Accepted Answer

A) 18 
B) 19 
C) 20 
D) 21 
E) 22 
A) 18 
B) 19 
C) 20 
D) 21 
E) 22

Question 14

Which of these molecules link together to form proteins?

Accepted Answer

A) Vitamins 
B) Amino acids 
C) Monosaccharides 
D) Fatty acids 
E) Triglycerides 
A) Vitamins 
B) Amino acids 
C) Monosaccharides 
D) Fatty acids 
E) Triglycerides

Question 15

Which of these structures is the location where proteins are synthesized?

Accepted Answer

A) mRNA 
B) Codon 
C) tRNA 
D) DNA 
E) Ribosome 
A) mRNA 
B) Codon 
C) tRNA 
D) DNA 
E) Ribosome

Question 16

Which of these determines the tertiary structure of a protein?

Accepted Answer

A) The sequence of amino acids. 
B) The ratio of acidic amino acids to basic amino acids. 
C) The number of alpha helices and pleated sheets along the axis of the protein. 
D) The number of hydrogen bonds which are made between neighboring amino acids. 
E) Interactions between amino acids separated by significant distances on the protein chain. 
A) The sequence of amino acids. 
B) The ratio of acidic amino acids to basic amino acids. 
C) The number of alpha helices and pleated sheets along the axis of the protein. 
D) The number of hydrogen bonds which are made between neighboring amino acids. 
E) Interactions between amino acids separated by significant distances on the protein chain.

Question 17

Which of these represents the three primary components of a nucleotide?

Accepted Answer

A) Phosphate, sugar, base 
B) Phosphate, acid, base 
C) Amine, acid, phosphate 
D) Amine, aldehyde, base 
E) None of these 
A) Phosphate, sugar, base 
B) Phosphate, acid, base 
C) Amine, acid, phosphate 
D) Amine, aldehyde, base 
E) None of these

Question 18

Which of these structures is an amino acid?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 19

Arrange these steps in the correct order for protein synthesis.
I. Protein detaches from the ribosome.
II. DNA unwinds to expose the sequence.
III. mRNA transfers the code to the ribosome.
IV. tRNA fits the correct amino acid sequence together

Accepted Answer

A) I, II, III, IV 
B) II, III, IV, I 
C) II, IV, III, I 
D) II, I, III, IV 
E) III, IV, II, I 
A) I, II, III, IV 
B) II, III, IV, I 
C) II, IV, III, I 
D) II, I, III, IV 
E) III, IV, II, I

Question 20

Which of these proteins is an example of a protein which acts as a hormone?

Accepted Answer

A) Hemoglobin 
B) Insulin 
C) Keratin 
D) Lysozyme 
E) Valine 
A) Hemoglobin 
B) Insulin 
C) Keratin 
D) Lysozyme 
E) Valine

Which of these molecules contains the blueprints for proteins?

Which of these proteins is an antibacterial agent found in mucus and tears?

Which of these molecules controls a majority of our body's chemistry?

Which of these is the correct general formula of a carbohydrate?

Which of these molecules is the primary structural component in biomembranes?

Which of these proteins is an example of a protein which acts as an enzyme?

Which of these determines the secondary structure of a protein?

Which of these statements about triglycerides is correct ?

Which of these represents the correct general formula for a fatty acid??

The alpha helix structure is the ____ structure of proteins.

Which of these substances is used in recombinant DNA technology to cut DNA at specific locations in the nucleotide sequence?

All amino acids contain which functional group?

How many different amino acids are there in humans?

Which of these molecules link together to form proteins?

Which of these structures is the location where proteins are synthesized?

Which of these determines the tertiary structure of a protein?

Which of these represents the three primary components of a nucleotide?

Which of these structures is an amino acid?

Arrange these steps in the correct order for protein synthesis. I. Protein detaches from the ribosome. II. DNA unwinds to expose the sequence. III. mRNA transfers the code to the ribosome. IV. tRNA fits the correct amino acid sequence together

Which of these proteins is an example of a protein which acts as a hormone?

Molecular Reasons

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Exam 16: Biochemistry and Biotechnology

Which of these molecules contains the blueprints for proteins?

Which of these proteins is an antibacterial agent found in mucus and tears?

Which of these molecules controls a majority of our body's chemistry?

Which of these is the correct general formula of a carbohydrate?

Which of these molecules is the primary structural component in biomembranes?

Which of these proteins is an example of a protein which acts as an enzyme?

Which of these determines the secondary structure of a protein?

Which of these statements about triglycerides is correct ?

Which of these represents the correct general formula for a fatty acid??

The alpha helix structure is the ____ structure of proteins.

Which of these substances is used in recombinant DNA technology to cut DNA at specific locations in the nucleotide sequence?

All amino acids contain which functional group?

How many different amino acids are there in humans?

Which of these molecules link together to form proteins?

Which of these structures is the location where proteins are synthesized?

Which of these determines the tertiary structure of a protein?

Which of these represents the three primary components of a nucleotide?

Which of these structures is an amino acid?

Arrange these steps in the correct order for protein synthesis. I. Protein detaches from the ribosome. II. DNA unwinds to expose the sequence. III. mRNA transfers the code to the ribosome. IV. tRNA fits the correct amino acid sequence together

Which of these proteins is an example of a protein which acts as a hormone?

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology

Filters