Question 1

Water has a high heat capacity because it has ____.

Accepted Answer

A) covalent bonds 
B) ionic bonds 
C) low freezing point 
D) high boiling point 
E) hydrogen bonds 
A) covalent bonds 
B) ionic bonds 
C) low freezing point 
D) high boiling point 
E) hydrogen bonds

Question 2

Isotopes of an element are different from the most common standard form due to differences in the ____.

Accepted Answer

A) atomic number ​ 
B) position of the element in the periodic table 
C) number of neutrons in the nucleus 
D) number of protons in the nucleus 
E) size of the electron cloud 
A) atomic number ​ 
B) position of the element in the periodic table 
C) number of neutrons in the nucleus 
D) number of protons in the nucleus 
E) size of the electron cloud

Question 3

Covalent bonds ____.

Accepted Answer

A) occur when ions of opposite charge are attracted to each other 
B) occur during oxidation reactions 
C) are the weak link between two water molecules 
D) are extremely strong and stable 
E) form bonds that hold Na and Cl together in NaCl (table salt) 
A) occur when ions of opposite charge are attracted to each other 
B) occur during oxidation reactions 
C) are the weak link between two water molecules 
D) are extremely strong and stable 
E) form bonds that hold Na and Cl together in NaCl (table salt)

Question 4

Which statement is true of electron shells?

Accepted Answer

A) The innermost shell can hold up to two electrons. 
B) The innermost shell is at the highest energy level. 
C) A shell can hold up 20 electrons. 
D) Larger atoms have less electron shells. 
E) A second shell with six electrons is completely filled. 
A) The innermost shell can hold up to two electrons. 
B) The innermost shell is at the highest energy level. 
C) A shell can hold up 20 electrons. 
D) Larger atoms have less electron shells. 
E) A second shell with six electrons is completely filled.

Question 5

A compound that contains both carbon and hydrogen is ____.

Accepted Answer

A) a salt 
B) always an acid 
C) non-biological 
D) organic 
E) inorganic 
A) a salt 
B) always an acid 
C) non-biological 
D) organic 
E) inorganic

Question 6

The blending of two or more kinds of molecules is a(n)____.

Accepted Answer

A) compound 
B) isotope 
C) reactant 
D) mixture 
E) chemical bond 
A) compound 
B) isotope 
C) reactant 
D) mixture 
E) chemical bond

Question 7

During a synthesis reaction, glucose and fructose combine to form ____.

Accepted Answer

A) glycogen 
B) sucrose ​ 
C) starch 
D) a monosaccharide ​ 
E) a polysaccharide 
A) glycogen 
B) sucrose ​ 
C) starch 
D) a monosaccharide ​ 
E) a polysaccharide

Question 8

Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen to oxygen?

Accepted Answer

A) carbohydrate 
B) protein 
C) lipid 
D) nucleic acid 
E) steroid 
A) carbohydrate 
B) protein 
C) lipid 
D) nucleic acid 
E) steroid

Question 9

An ion is formed ____.

Accepted Answer

A) during covalent bonds 
B) when water molecules are bound together 
C) when atoms exchange electrons 
D) when atoms share electrons equally 
E) when atoms share electrons unequally 
A) during covalent bonds 
B) when water molecules are bound together 
C) when atoms exchange electrons 
D) when atoms share electrons equally 
E) when atoms share electrons unequally

Question 10

Match between columns
                        Premises: group that occurs repeatedly in alcohol and sugars
group that is very acidic
three of these groups found in ATP
group on the carboxyl-terminal end of proteins
carboxyl group
methyl group
ketone group
group on the amino-terminal end of proteins
hydroxyl group
amine group

Accepted Answer

The Answer of ¾ COOH and ¾ CO ¾ and is...

Question 11

Nucleotides that move hydrogen atoms and electrons from one reaction site to another are known as ____________________.

Accepted Answer

The answer of Nucleotides that move hydrogen atoms and electrons...

Question 12

The most abundant lipids in the body are ____.

Accepted Answer

A) triglycerides 
B) oils 
C) waxes 
D) fatty acids 
E) phospholipids 
A) triglycerides 
B) oils 
C) waxes 
D) fatty acids 
E) phospholipids

Question 13

The sterol ____________________ is a vital component of all cell membranes and is used to synthesize steroid hormones.

Accepted Answer

The answer of The sterol ____________________ is a vital component...

Question 14

Which part of the amino acid helps to determine its chemical properties?

Accepted Answer

A) amino group 
B) carboxyl group 
C) covalent bond 
D) peptide bond 
E) R-group 
A) amino group 
B) carboxyl group 
C) covalent bond 
D) peptide bond 
E) R-group

Question 15

Proteins perform four of the following functions. They do NOT, however ____.

Accepted Answer

A) act as enzymes 
B) store large amounts of energy 
C) act as transport molecules 
D) bind molecules to or inside cells 
E) adjust cell activities 
A) act as enzymes 
B) store large amounts of energy 
C) act as transport molecules 
D) bind molecules to or inside cells 
E) adjust cell activities

Question 16

A free radical takes what particle from a stable molecule?

Accepted Answer

A) a proton 
B) an electron 
C) a neutron 
D) an atom 
E) a hydrogen ion 
A) a proton 
B) an electron 
C) a neutron 
D) an atom 
E) a hydrogen ion

Question 17

Which class of fats are used to synthesize various vitamins and hormones?

Accepted Answer

A) fatty acids 
B) triglycerides 
C) phospholipids 
D) sterols 
E) waxes 
A) fatty acids 
B) triglycerides 
C) phospholipids 
D) sterols 
E) waxes

Question 18

Positron emission tomography (PET)utilizes ____ to yield results of a scan.

Accepted Answer

A) x-rays 
B) tracers 
C) glucose 
D) ion 
E) photons 
A) x-rays 
B) tracers 
C) glucose 
D) ion 
E) photons

Question 19

A pure substance that cannot be broken down into another substance is known as a(n)____.

Accepted Answer

A) proton 
B) electron 
C) compound 
D) element 
E) isotope 
A) proton 
B) electron 
C) compound 
D) element 
E) isotope

Question 20

There are how many different types of amino acids?

Accepted Answer

A) 5 
B) 10 
C) 15 
D) 20 
E) 50 
A) 5 
B) 10 
C) 15 
D) 20 
E) 50

Exam 2: Chemistry of Life

Water has a high heat capacity because it has ____.

Isotopes of an element are different from the most common standard form due to differences in the ____.

Covalent bonds ____.

Which statement is true of electron shells?

A compound that contains both carbon and hydrogen is ____.

The blending of two or more kinds of molecules is a(n)____.

During a synthesis reaction, glucose and fructose combine to form ____.

Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen to oxygen?

An ion is formed ____.

Nucleotides that move hydrogen atoms and electrons from one reaction site to another are known as ____________________.

The most abundant lipids in the body are ____.

The sterol ____________________ is a vital component of all cell membranes and is used to synthesize steroid hormones.

Which part of the amino acid helps to determine its chemical properties?

Proteins perform four of the following functions. They do NOT, however ____.

A free radical takes what particle from a stable molecule?

Which class of fats are used to synthesize various vitamins and hormones?

Positron emission tomography (PET)utilizes ____ to yield results of a scan.

A pure substance that cannot be broken down into another substance is known as a(n)____.

There are how many different types of amino acids?

Learning About Human Biology

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA Genes and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

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