Question 1

Which of the following is not a complex carbohydrate?

Accepted Answer

A) sucrose 
B) starch 
C) glycogen 
D) cellulose 
E) All of the above are complex carbohydrates. 
A) sucrose 
B) starch 
C) glycogen 
D) cellulose 
E) All of the above are complex carbohydrates.

Question 2

The dietary minerals must be in ionic form in order for the body to make use of them. Why?

Accepted Answer

A) so that the body can regulate the amount of intake to prevent toxic overdose 
B) When not in ionic form, they become stored in the fatty tissue. 
C) This is the only form that they are soluble in water and can be transported through the body. 
D) to prevent acid-base reactions from occurring in the body 
A) so that the body can regulate the amount of intake to prevent toxic overdose 
B) When not in ionic form, they become stored in the fatty tissue. 
C) This is the only form that they are soluble in water and can be transported through the body. 
D) to prevent acid-base reactions from occurring in the body

Question 3

It is important to have cholesterol in your body because ________.

Accepted Answer

A) it is the starting material for the building of glycogen 
B) the brain is made almost entirely of cholesterol 
C) it helps break down extra fat lipids in the body 
D) it serves as the starting material for the biosynthesis of most all other steroids 
A) it is the starting material for the building of glycogen 
B) the brain is made almost entirely of cholesterol 
C) it helps break down extra fat lipids in the body 
D) it serves as the starting material for the biosynthesis of most all other steroids

Question 4

Why are carbohydrates called carbohydrates?

Accepted Answer

A) because they are made from carbon and water 
B) because they are grown from carbos 
C) because they are hydrated 
D) because they are obtained from plants 
E) because they are obtained from animals 
A) because they are made from carbon and water 
B) because they are grown from carbos 
C) because they are hydrated 
D) because they are obtained from plants 
E) because they are obtained from animals

Question 5

Which of the following statements best describes monosaccharides?

Accepted Answer

A) It is the fundamental unit of a carbohydrate. 
B) It is the fundamental unit of life. 
C) It is the fundamental unit of genetic material. 
D) It is the basic repeating unit of a polymer. 
E) It is the monomer of the sucrose polymer. 
A) It is the fundamental unit of a carbohydrate. 
B) It is the fundamental unit of life. 
C) It is the fundamental unit of genetic material. 
D) It is the basic repeating unit of a polymer. 
E) It is the monomer of the sucrose polymer.

Question 6

Which of the following plays the most active role in protein manufacture?

Accepted Answer

A) DNA 
B) RNA 
C) genes 
D) nucleotides 
E) none of the above 
A) DNA 
B) RNA 
C) genes 
D) nucleotides 
E) none of the above

Question 7

Which of the above pairs of side chains could be involved in a hydrophobic interaction?

Accepted Answer

A) a and b 
B) a and c 
C) b and c 
D) b and d 
E) none of the above 
A) a and b 
B) a and c 
C) b and c 
D) b and d 
E) none of the above

Question 8

What is the cause of lactose intolerance?

Accepted Answer

A) You cannot digest lactose but the bacteria in your intestine can and they produce a lot of gases in the process. 
B) Lactose is poisonous and leads to illness. 
C) Too much lactase is present in the intestine and it destroys the lactose. 
D) The lactose is in competition with the lactase and it causes hydrogen production. 
E) none of the above 
A) You cannot digest lactose but the bacteria in your intestine can and they produce a lot of gases in the process. 
B) Lactose is poisonous and leads to illness. 
C) Too much lactase is present in the intestine and it destroys the lactose. 
D) The lactose is in competition with the lactase and it causes hydrogen production. 
E) none of the above

Question 9

Nucleic acids determine ________.

Accepted Answer

A) the sequence of amino acids 
B) the pH of the cell nucleus 
C) the number of nucleons in a biomolecule 
D) the rate at which food is metabolized 
A) the sequence of amino acids 
B) the pH of the cell nucleus 
C) the number of nucleons in a biomolecule 
D) the rate at which food is metabolized

Question 10

Which of the following is a triglyceride?

Accepted Answer

A) saturated fats 
B) unsaturated fats 
C) steroids 
D) hormones 
E) both A and B 
A) saturated fats 
B) unsaturated fats 
C) steroids 
D) hormones 
E) both A and B

Question 11

Suggest why starch takes longer to break down to glucose in the intestine than does sucrose.

Accepted Answer

A) It is more nonpolar and has a harder time entering through the intestinal wall. 
B) As starch is digested, glucose units are broken off only at the ends of the chains. 
C) Because starch has a smaller molecular mass. 
D) The polysaccharide strands of starch tend to stick together. 
A) It is more nonpolar and has a harder time entering through the intestinal wall. 
B) As starch is digested, glucose units are broken off only at the ends of the chains. 
C) Because starch has a smaller molecular mass. 
D) The polysaccharide strands of starch tend to stick together.

Question 12

Which of the following statements about polysaccharides are true?

Accepted Answer

A) Polysaccharides contain hundreds of thousands of monosaccharide subunits. 
B) Polysaccharides are only composed of one type of monomeric unit. 
C) Polysaccharides are insoluble. 
D) All of the above are true. 
E) None of the above are true. 
A) Polysaccharides contain hundreds of thousands of monosaccharide subunits. 
B) Polysaccharides are only composed of one type of monomeric unit. 
C) Polysaccharides are insoluble. 
D) All of the above are true. 
E) None of the above are true.

Question 13

What polypeptide is coded for by the mRNA sequence auggacccagcgugaugua?

Accepted Answer

A) Asp-Pro-Ala 
B) Phe-Ser-Asn 
C) Cys-Lys-Val 
D) Glu-Arg-Leu 
A) Asp-Pro-Ala 
B) Phe-Ser-Asn 
C) Cys-Lys-Val 
D) Glu-Arg-Leu

Question 14

Why might a change in pH cause a protein to denature?

Accepted Answer

A) The functional groups that give the protein its shape become protonated or deprotonated. 
B) The water hardens and causes the protein's shape to change. 
C) The hydrogen bonds between the hydrophobic portions of the protein collapse due to extra protons. 
D) The disulfide bridges open. 
E) all of the above 
A) The functional groups that give the protein its shape become protonated or deprotonated. 
B) The water hardens and causes the protein's shape to change. 
C) The hydrogen bonds between the hydrophobic portions of the protein collapse due to extra protons. 
D) The disulfide bridges open. 
E) all of the above

Question 15

Both water-soluble and water-insoluble vitamins can be toxic in large quantities. Our bodies are much more tolerant of the water-soluble ones because ________.

Accepted Answer

A) our bodies are able to store the excess vitamins in our fat reserves 
B) they tend to be the weaker vitamins that the body needs a lot of 
C) excess quantities of these vitamins are readily excreted 
D) these are the vitamins that our body doesn't really use 
A) our bodies are able to store the excess vitamins in our fat reserves 
B) they tend to be the weaker vitamins that the body needs a lot of 
C) excess quantities of these vitamins are readily excreted 
D) these are the vitamins that our body doesn't really use

Question 16

The coiling of a chain of amino acids describes a proteins ________.

Accepted Answer

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

Question 17

How are polysaccharides and polymers related?

Accepted Answer

A) Polysaccharides are polymers made of saccharide monomers. 
B) Polymers are condensed polysaccharides. 
C) Polymers are only made by addition while polysaccharides are made by condensation. 
D) Polysaccharides are made of individual polymers as monomers. 
E) none of the above 
A) Polysaccharides are polymers made of saccharide monomers. 
B) Polymers are condensed polysaccharides. 
C) Polymers are only made by addition while polysaccharides are made by condensation. 
D) Polysaccharides are made of individual polymers as monomers. 
E) none of the above

Question 18

Which of the following structures could represent an amino acid that is found in a biological system?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) c and d 
A) a 
B) b 
C) c 
D) d 
E) c and d

Question 19

The sequence of amino acids within a protein describes that protein's ________.

Accepted Answer

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

Question 20

Which statement is more accurate? a. Vitamins are needed by the body to avoid vitamin-deficiency diseases, such as scurvy.
B. Vitamins are needed by the body so that many of its catabolic and anabolic reactions can proceed efficiently.

Accepted Answer

A) Only statement a is true. 
B) Only statement b is true. 
C) Statement a is more accurate than statement b. 
D) Statement b is more accurate than statement a. 
A) Only statement a is true. 
B) Only statement b is true. 
C) Statement a is more accurate than statement b. 
D) Statement b is more accurate than statement a.

Which of the following is not a complex carbohydrate?

The dietary minerals must be in ionic form in order for the body to make use of them. Why?

It is important to have cholesterol in your body because ________.

Why are carbohydrates called carbohydrates?

Which of the following statements best describes monosaccharides?

Which of the following plays the most active role in protein manufacture?

Which of the above pairs of side chains could be involved in a hydrophobic interaction?

What is the cause of lactose intolerance?

Nucleic acids determine ________.

Which of the following is a triglyceride?

Suggest why starch takes longer to break down to glucose in the intestine than does sucrose.

Which of the following statements about polysaccharides are true?

What polypeptide is coded for by the mRNA sequence auggacccagcgugaugua?

Why might a change in pH cause a protein to denature?

Both water-soluble and water-insoluble vitamins can be toxic in large quantities. Our bodies are much more tolerant of the water-soluble ones because ________.

The coiling of a chain of amino acids describes a proteins ________.

How are polysaccharides and polymers related?

Which of the following structures could represent an amino acid that is found in a biological system?

The sequence of amino acids within a protein describes that protein's ________.

Which statement is more accurate? a. Vitamins are needed by the body to avoid vitamin-deficiency diseases, such as scurvy. B. Vitamins are needed by the body so that many of its catabolic and anabolic reactions can proceed efficiently.

About Science

Particles of Matter

Elements of Chemistry

Subatomic Particles

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Medicinal Chemistry

Optimizing Food Production

Protection Water and Air Resources

Capturing Energy

Filters

Exam 13: Nutrients of Life

Which of the following is not a complex carbohydrate?

The dietary minerals must be in ionic form in order for the body to make use of them. Why?

It is important to have cholesterol in your body because ________.

Why are carbohydrates called carbohydrates?

Which of the following statements best describes monosaccharides?

Which of the following plays the most active role in protein manufacture?

Which of the above pairs of side chains could be involved in a hydrophobic interaction?

What is the cause of lactose intolerance?

Nucleic acids determine ________.

Which of the following is a triglyceride?

Suggest why starch takes longer to break down to glucose in the intestine than does sucrose.

Which of the following statements about polysaccharides are true?

What polypeptide is coded for by the mRNA sequence auggacccagcgugaugua?

Why might a change in pH cause a protein to denature?

Both water-soluble and water-insoluble vitamins can be toxic in large quantities. Our bodies are much more tolerant of the water-soluble ones because ________.

The coiling of a chain of amino acids describes a proteins ________.

How are polysaccharides and polymers related?

Which of the following structures could represent an amino acid that is found in a biological system?

The sequence of amino acids within a protein describes that protein's ________.

Which statement is more accurate? a. Vitamins are needed by the body to avoid vitamin-deficiency diseases, such as scurvy. B. Vitamins are needed by the body so that many of its catabolic and anabolic reactions can proceed efficiently.

About Science

Particles of Matter

Elements of Chemistry

Subatomic Particles

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Medicinal Chemistry

Optimizing Food Production

Protection Water and Air Resources

Capturing Energy

Filters