Question 1

Carbon dioxide is produced as a result of

Accepted Answer

A) metabolic activity. 
B) carbon monoxide instability. 
C) oxygen synthesis during aerobic respiration. 
D) the breakdown of water into oxygen. 
E) glucose synthesis. 
A) metabolic activity. 
B) carbon monoxide instability. 
C) oxygen synthesis during aerobic respiration. 
D) the breakdown of water into oxygen. 
E) glucose synthesis. A

Question 2

The term that applies to all of the decomposition reactions that occur in metabolism is

Accepted Answer

A) anabolism. 
B) dehydration synthesis. 
C) catabolism. 
D) ionization. 
E) homeostasis. 
A) anabolism. 
B) dehydration synthesis. 
C) catabolism. 
D) ionization. 
E) homeostasis. C

Question 3

Substrate molecules bind to enzymes at the

Accepted Answer

A) allosteric sites. 
B) modification sites. 
C) reaction sites. 
D) active sites. 
E) ionic sites. 
A) allosteric sites. 
B) modification sites. 
C) reaction sites. 
D) active sites. 
E) ionic sites. D

Question 4

The uncharged subatomic particles are called

Accepted Answer

A) atoms. 
B) molecules. 
C) protons. 
D) neutrons. 
E) electrons. 
A) atoms. 
B) molecules. 
C) protons. 
D) neutrons. 
E) electrons.

Question 5

Chemical reactions that occur in the human body are catalyzed by special protein molecules called

Accepted Answer

A) electrolytes. 
B) enzymes. 
C) metabolites. 
D) steroids. 
E) buffers. 
A) electrolytes. 
B) enzymes. 
C) metabolites. 
D) steroids. 
E) buffers.

Question 6

The nucleic acid DNA

Accepted Answer

A) is double stranded. 
B) contains uracil in place of thymine. 
C) contains the pentose ribose. 
D) contains protein bases. 
E) synthesizes lipids. 
A) is double stranded. 
B) contains uracil in place of thymine. 
C) contains the pentose ribose. 
D) contains protein bases. 
E) synthesizes lipids.

Question 7

Why is it important to precisely regulate the pH of blood or other body fluids?

Accepted Answer

A) Blood functions as an excellent solvent. 
B) Blood and other body fluids have a very high heat capacity. 
C) Dehydration synthesis of large molecules occurs. 
D) Hydrogen ions are extremely reactive. 
E) Some organic molecules have polar covalent bonds. 
A) Blood functions as an excellent solvent. 
B) Blood and other body fluids have a very high heat capacity. 
C) Dehydration synthesis of large molecules occurs. 
D) Hydrogen ions are extremely reactive. 
E) Some organic molecules have polar covalent bonds.

Question 8

You are working with a particular protein in your research lab to determine how its properties affect the function of the protein.To determine what consequences there might be on protein function,you decide to change just one amino acid of the entire length of the protein,which consists of a total of 100 amino acids.You have just directly changed the ________ structure of the protein.

Accepted Answer

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

Question 9

Which of the following is an example of an anion?

Accepted Answer

A) magnesium 
B) potassium 
C) calcium 
D) chloride 
E) sodium 
A) magnesium 
B) potassium 
C) calcium 
D) chloride 
E) sodium

Question 10

Both chemically- and structurally-speaking,which of these compounds does not belong?

Accepted Answer

A) carbohydrates 
B) lipids 
C) proteins 
D) salts 
E) nucleic acids 
A) carbohydrates 
B) lipids 
C) proteins 
D) salts 
E) nucleic acids

Question 11

-Identify the structure labeled #5,a component of triglycerides,which is comprised of long chains of carbon atoms with attached hydrogen atoms that end in a carboxyl group.

Accepted Answer

A) glycerol 
B) monosaccharide 
C) amino acid 
D) nucleotide 
E) fatty acid 
A) glycerol 
B) monosaccharide 
C) amino acid 
D) nucleotide 
E) fatty acid

Question 12

Which of the following is a characteristic of hydrogen bonds?

Accepted Answer

A) Hydrogen bonds are strong attractive forces between hydrogen atoms and negatively charged atoms. 
B) Hydrogen bonds occur only in water. 
C) Hydrogen bonds can form between adjacent molecules. 
D) Hydrogen bonds are part of fatty-acid structure. 
E) Hydrogen bonds are part of carbohydrate structure. 
A) Hydrogen bonds are strong attractive forces between hydrogen atoms and negatively charged atoms. 
B) Hydrogen bonds occur only in water. 
C) Hydrogen bonds can form between adjacent molecules. 
D) Hydrogen bonds are part of fatty-acid structure. 
E) Hydrogen bonds are part of carbohydrate structure.

Question 13

Which of these is a molecule but is not considered to be a compound?

Accepted Answer

A) H2O 
B) CO2 
C) C6H12O6 
D) H2 
E) CO 
A) H2O 
B) CO2 
C) C6H12O6 
D) H2 
E) CO

Question 14

Which of the following are defined as soluble inorganic compounds whose ions will conduct an electric current in solutions?

Accepted Answer

A) catalysts 
B) electrolytes 
C) strong acids 
D) buffers 
E) steroid hormones 
A) catalysts 
B) electrolytes 
C) strong acids 
D) buffers 
E) steroid hormones

Question 15

Atoms that are of the same element but contain different numbers of neutrons are called

Accepted Answer

A) isomers. 
B) cations. 
C) isotopes. 
D) anions. 
E) None of these is correct. 
A) isomers. 
B) cations. 
C) isotopes. 
D) anions. 
E) None of these is correct.

Question 16

Which of the following is an example of a disaccharide?

Accepted Answer

A) starch 
B) glycogen 
C) sucrose 
D) cellulose 
E) fructose 
A) starch 
B) glycogen 
C) sucrose 
D) cellulose 
E) fructose

Question 17

Ions with a positive charge are called

Accepted Answer

A) anions. 
B) bases. 
C) metabolites. 
D) cations. 
E) acids. 
A) anions. 
B) bases. 
C) metabolites. 
D) cations. 
E) acids.

Question 18

If an element is composed of atoms with an atomic number of 8 and a mass number of 14,then an electrically neutral atom of this element contains

Accepted Answer

A) 6 protons. 
B) 6 neutrons. 
C) 6 electrons. 
D) 14 protons. 
E) 14 electrons. 
A) 6 protons. 
B) 6 neutrons. 
C) 6 electrons. 
D) 14 protons. 
E) 14 electrons.

Question 19

Reactions that ultimately result in larger molecules formed from smaller ones are called ________ reactions.

Accepted Answer

A) hydrolysis 
B) reversible 
C) exergonic 
D) dissociation 
E) synthesis 
A) hydrolysis 
B) reversible 
C) exergonic 
D) dissociation 
E) synthesis

Question 20

A(n)________ contains atoms with the same atomic number.

Accepted Answer

A) base 
B) element 
C) cation 
D) anion 
E) enzyme 
A) base 
B) element 
C) cation 
D) anion 
E) enzyme

Carbon dioxide is produced as a result of

The term that applies to all of the decomposition reactions that occur in metabolism is

Substrate molecules bind to enzymes at the

The uncharged subatomic particles are called

Chemical reactions that occur in the human body are catalyzed by special protein molecules called

The nucleic acid DNA

Why is it important to precisely regulate the pH of blood or other body fluids?

Which of the following is an example of an anion?

Both chemically- and structurally-speaking,which of these compounds does not belong?

-Identify the structure labeled #5,a component of triglycerides,which is comprised of long chains of carbon atoms with attached hydrogen atoms that end in a carboxyl group.

Which of the following is a characteristic of hydrogen bonds?

Which of these is a molecule but is not considered to be a compound?

Which of the following are defined as soluble inorganic compounds whose ions will conduct an electric current in solutions?

Atoms that are of the same element but contain different numbers of neutrons are called

Which of the following is an example of a disaccharide?

Ions with a positive charge are called

If an element is composed of atoms with an atomic number of 8 and a mass number of 14,then an electrically neutral atom of this element contains

Reactions that ultimately result in larger molecules formed from smaller ones are called ________ reactions.

A(n)________ contains atoms with the same atomic number.

An Introduction to Anatomy and Physiology

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Development and Inheritance

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Exam 2: The Chemical Level of Organization

Carbon dioxide is produced as a result of

The term that applies to all of the decomposition reactions that occur in metabolism is

Substrate molecules bind to enzymes at the

The uncharged subatomic particles are called

Chemical reactions that occur in the human body are catalyzed by special protein molecules called

The nucleic acid DNA

Why is it important to precisely regulate the pH of blood or other body fluids?

Which of the following is an example of an anion?

Both chemically- and structurally-speaking,which of these compounds does not belong?

-Identify the structure labeled #5,a component of triglycerides,which is comprised of long chains of carbon atoms with attached hydrogen atoms that end in a carboxyl group.

Which of the following is a characteristic of hydrogen bonds?

Which of these is a molecule but is not considered to be a compound?

Which of the following are defined as soluble inorganic compounds whose ions will conduct an electric current in solutions?

Atoms that are of the same element but contain different numbers of neutrons are called

Which of the following is an example of a disaccharide?

Ions with a positive charge are called

If an element is composed of atoms with an atomic number of 8 and a mass number of 14,then an electrically neutral atom of this element contains

Reactions that ultimately result in larger molecules formed from smaller ones are called ________ reactions.

A(n)________ contains atoms with the same atomic number.

An Introduction to Anatomy and Physiology

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Development and Inheritance

Filters