Question 1

Phospholipids have a hydrophobic region (the "head") and a hydrophilic region (fatty acid chains, or nonpolar "tails").

Accepted Answer

A) True 
 B)False  False

Question 2

An atom with 13 electrons will have ________ electrons in the valence shell.

Accepted Answer

A)  2 
B)  3 
C)  5 
D)  8 
A)  2 
B)  3 
C)  5 
D)  8 B

Question 3

An atom of magnesium has lost two electrons. It is known as a(n) ________.

Accepted Answer

A)  anion 
B)  molecule 
C)  isotope 
D)  cation 
E)  neutral atom 
A)  anion 
B)  molecule 
C)  isotope 
D)  cation 
E)  neutral atom D

Question 4

Match the following:
-DNA, RNA, and ATP are types

Accepted Answer

A) fibrous proteins 
B) globular proteins 
C) amino acids 
D) lipids 
E) carbohydrates
F)nucleic acids 
A) fibrous proteins 
B) globular proteins 
C) amino acids 
D) lipids 
E) carbohydrates
F)nucleic acids

Question 5

Water is the single most abundant inorganic compound in the human body.

Accepted Answer

A) True 
 B)False

Question 6

Match the following:
-Atoms share these subatomic particles when they combine to form molecules.

Accepted Answer

A) Proton 
B) Neutron 
C) Electron 
A) Proton 
B) Neutron 
C) Electron

Question 7

Match the following:
-These subatomic particles carry a negative charge and are found in orbitals that surround the nucleus.

Accepted Answer

A) Proton 
B) Neutron 
C) Electron 
A) Proton 
B) Neutron 
C) Electron

Question 8

During a synthesis reaction, amino acids join to form ________.

Accepted Answer

A)  carbohydrates 
B)  proteins 
C)  monomers 
D)  nucleic acids 
A)  carbohydrates 
B)  proteins 
C)  monomers 
D)  nucleic acids

Question 9

Atoms that have lost or gained electrons during chemical bonding are known as isotopes.

Accepted Answer

A) True 
 B)False

Question 10

The atomic number of sodium is 11 while the atomic mass number is 23. Which of the following is NOT True of an atom of sodium?

Accepted Answer

A)  11 protons 
B)  8 electrons in the valence shell of a neutral sodium atom 
C)  11 neutrons 
D)  11 electrons 
E)  1 electron in the valence shell of a neutral sodium atom 
A)  11 protons 
B)  8 electrons in the valence shell of a neutral sodium atom 
C)  11 neutrons 
D)  11 electrons 
E)  1 electron in the valence shell of a neutral sodium atom

Question 11

The complementary base to adenine in a molecule of DNA is ________.

Accepted Answer

A)  guanine 
B)  cytosine 
C)  leucine 
D)  thymine 
A)  guanine 
B)  cytosine 
C)  leucine 
D)  thymine

Question 12

Which of the following statements about RNA is True?

Accepted Answer

A)  RNA is a single nucleotide strand. 
B)  RNA is composed of the bases cytosine, guanine, adenine, and thymine. 
C)  RNA is found only in the nucleus of the cell. 
D)  RNA contains a sugar called deoxyribose. 
E)  RNA is the genetic material found within the cell nucleus. 
A)  RNA is a single nucleotide strand. 
B)  RNA is composed of the bases cytosine, guanine, adenine, and thymine. 
C)  RNA is found only in the nucleus of the cell. 
D)  RNA contains a sugar called deoxyribose. 
E)  RNA is the genetic material found within the cell nucleus.

Question 13

Differentiate between the functions of RNA and DNA.

Accepted Answer

DNA is the genetic material found in the

Question 14

What is the function of DNA?

Accepted Answer

A)  DNA provides instructions for building every protein in the body. 
B)  DNA serves as a form of chemical energy that all body cells can use. 
C)  DNA serves as the most important fuel for body cells. 
D)  DNA carries out the orders for protein synthesis issued by RNA. 
E)  DNA increases the rate of a chemical reaction without becoming part of the product. 
A)  DNA provides instructions for building every protein in the body. 
B)  DNA serves as a form of chemical energy that all body cells can use. 
C)  DNA serves as the most important fuel for body cells. 
D)  DNA carries out the orders for protein synthesis issued by RNA. 
E)  DNA increases the rate of a chemical reaction without becoming part of the product.

Question 15

Explain why a denatured protein no longer functions.

Accepted Answer

Denaturation results when the three-dime

Question 16

Hydrogen bonds are very strong bonds that hold together water molecules.

Accepted Answer

A) True 
 B)False

Question 17

A nucleotide of DNA contain three components: ________, ________, and ________.

Accepted Answer

A)  deoxyribose; a phosphate group; nitrogen-containing base 
B)  ribose; three phosphate groups; nitrogen-containing base 
C)  ribose; two phosphate groups; acid group 
D)  ribose; a phosphate group; nitrogen-containing base 
A)  deoxyribose; a phosphate group; nitrogen-containing base 
B)  ribose; three phosphate groups; nitrogen-containing base 
C)  ribose; two phosphate groups; acid group 
D)  ribose; a phosphate group; nitrogen-containing base

Question 18

Which of the following would be classified as an enzyme?

Accepted Answer

A)  hydrolase 
B)  cholesterol 
C)  triglyceride 
D)  cellulose 
E)  ATP 
A)  hydrolase 
B)  cholesterol 
C)  triglyceride 
D)  cellulose 
E)  ATP

Question 19

Enzymes are examples of ________ proteins.

Accepted Answer

A)  structural 
B)  globular (functional) 
C)  fibrous 
D)  alpha 
A)  structural 
B)  globular (functional) 
C)  fibrous 
D)  alpha

Question 20

The organic compounds that function in building tissues and acting as enzymes are the ________.

Accepted Answer

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

Phospholipids have a hydrophobic region (the "head") and a hydrophilic region (fatty acid chains, or nonpolar "tails").

An atom with 13 electrons will have ________ electrons in the valence shell.

An atom of magnesium has lost two electrons. It is known as a(n) ________.

Match the following: -DNA, RNA, and ATP are types

Water is the single most abundant inorganic compound in the human body.

Match the following: -Atoms share these subatomic particles when they combine to form molecules.

Match the following: -These subatomic particles carry a negative charge and are found in orbitals that surround the nucleus.

During a synthesis reaction, amino acids join to form ________.

Atoms that have lost or gained electrons during chemical bonding are known as isotopes.

The atomic number of sodium is 11 while the atomic mass number is 23. Which of the following is NOT True of an atom of sodium?

The complementary base to adenine in a molecule of DNA is ________.

Which of the following statements about RNA is True?

Differentiate between the functions of RNA and DNA.

What is the function of DNA?

Explain why a denatured protein no longer functions.

Hydrogen bonds are very strong bonds that hold together water molecules.

A nucleotide of DNA contain three components: , , and .

Which of the following would be classified as an enzyme?

Enzymes are examples of ________ proteins.

The organic compounds that function in building tissues and acting as enzymes are the ________.

The Human Body: An Orientation

Cells and Tissues

Skin and Body Membranes

The Skeletal System

The Muscular System

The Nervous System

Special Senses

The Endocrine System

Blood

The Cardiovascular System

The Lymphatic System and Body Defenses

The Respiratory System

The Digestive System and Body Metabolism

The Urinary System

The Reproductive System

Filters

Exam 2: Basic Chemistry

Phospholipids have a hydrophobic region (the "head") and a hydrophilic region (fatty acid chains, or nonpolar "tails").

An atom with 13 electrons will have ________ electrons in the valence shell.

An atom of magnesium has lost two electrons. It is known as a(n) ________.

Match the following: -DNA, RNA, and ATP are types

Water is the single most abundant inorganic compound in the human body.

Match the following: -Atoms share these subatomic particles when they combine to form molecules.

Match the following: -These subatomic particles carry a negative charge and are found in orbitals that surround the nucleus.

During a synthesis reaction, amino acids join to form ________.

Atoms that have lost or gained electrons during chemical bonding are known as isotopes.

The atomic number of sodium is 11 while the atomic mass number is 23. Which of the following is NOT True of an atom of sodium?

The complementary base to adenine in a molecule of DNA is ________.

Which of the following statements about RNA is True?

Differentiate between the functions of RNA and DNA.

What is the function of DNA?

Explain why a denatured protein no longer functions.

Hydrogen bonds are very strong bonds that hold together water molecules.

A nucleotide of DNA contain three components: ________, ________, and ________.

Which of the following would be classified as an enzyme?

Enzymes are examples of ________ proteins.

The organic compounds that function in building tissues and acting as enzymes are the ________.

The Human Body: An Orientation

Cells and Tissues

Skin and Body Membranes

The Skeletal System

The Muscular System

The Nervous System

Special Senses

The Endocrine System

Blood

The Cardiovascular System

The Lymphatic System and Body Defenses

The Respiratory System

The Digestive System and Body Metabolism

The Urinary System

The Reproductive System

Filters

A nucleotide of DNA contain three components: , , and .