Question 1

All of the synthesis reactions in the body are called

Accepted Answer

A)  catabolism. 
B)  hydrolysis. 
C)  oxidation-reduction. 
D)  anabolism. 
E)  dissociation. 
A)  catabolism. 
B)  hydrolysis. 
C)  oxidation-reduction. 
D)  anabolism. 
E)  dissociation.

Question 2

Cobalt-60 is used for radiation treatments of cancer. How many electrons does an atom of Co-60 have?

Accepted Answer

The answer of Cobalt-60 is used for radiation treatments of...

Question 3

Carbon dioxide is considered a(n)

Accepted Answer

A)  molecule. 
B)  compound. 
C)  molecule and a compound. 
D)  element. 
E)  ion. 
A)  molecule. 
B)  compound. 
C)  molecule and a compound. 
D)  element. 
E)  ion.

Question 4

The minimum energy required to start a chemical reaction

Accepted Answer

A)  moves in energy surges. 
B)  results from random molecular movement. 
C)  comes from ionic energy motion. 
D)  is elevated by a catalyst. 
E)  can be lowered by enzymes. 
A)  moves in energy surges. 
B)  results from random molecular movement. 
C)  comes from ionic energy motion. 
D)  is elevated by a catalyst. 
E)  can be lowered by enzymes.

Question 5

Cobalt-60 is used for radiation treatments of cancer. How many protons does an atom of Co-60 have?

Accepted Answer

The answer of Cobalt-60 is used for radiation treatments of...

Question 6

-Phospholipids are important components of the plasma membrane. What does "B" represent on the diagram?

Accepted Answer

A)  phosphorus 
B)  oxygen 
C)  nitrogen 
D)  polar (hydrophilic) region 
E)  nonpolar (hydrophobic) region 
A)  phosphorus 
B)  oxygen 
C)  nitrogen 
D)  polar (hydrophilic) region 
E)  nonpolar (hydrophobic) region

Question 7

Which of the following is a use of radioactive isotopes?

Accepted Answer

A)  treat cancer 
B)  diagnose disorders 
C)  sterilize materials 
D)  All of these choices are correct. 
A)  treat cancer 
B)  diagnose disorders 
C)  sterilize materials 
D)  All of these choices are correct.

Question 8

-Water accounts for 50% of the weight of a young adult female and 60% of a young adult male. What kind of bond is found at "B"?

Accepted Answer

A)  hydrogen bond 
B)  water molecule 
C)  oxygen atom 
D)  hydrogen atom 
E)  polar covalent bond 
A)  hydrogen bond 
B)  water molecule 
C)  oxygen atom 
D)  hydrogen atom 
E)  polar covalent bond

Question 9

A cation is

Accepted Answer

A)  a combination of atoms held together by chemical bonds. 
B)  a positively charged ion. 
C)  a negatively charged ion. 
D)  a molecule that conducts electricity when placed in solution. 
E)  an alteration in the three-dimensional structure of a protein. 
A)  a combination of atoms held together by chemical bonds. 
B)  a positively charged ion. 
C)  a negatively charged ion. 
D)  a molecule that conducts electricity when placed in solution. 
E)  an alteration in the three-dimensional structure of a protein.

Question 10

Which of the following is a proton donor?

Accepted Answer

A)  an acid 
B)  a base 
C)  a salt 
D)  glucose 
E)  a neutral substance 
A)  an acid 
B)  a base 
C)  a salt 
D)  glucose 
E)  a neutral substance

Question 11

X-rays can be used to view bones because

Accepted Answer

A)  x-rays pass through bone. 
B)  x-rays react with bone. 
C)  x-rays can not pass through bone. 
D)  bones are less dense than soft tissue. 
A)  x-rays pass through bone. 
B)  x-rays react with bone. 
C)  x-rays can not pass through bone. 
D)  bones are less dense than soft tissue.

Question 12

Which of the following chemical reactions best represents the decomposition of ATP?

Accepted Answer

A)  ATP + ADP $\rightarrow$ ATP 
B)  ADP + ADP + ADP $\rightarrow$ ATP 
C)  ATP + energy $\rightarrow$ ADP + H2O 
D)  ADP + Pi + energy $\rightarrow$ ATP + H2O 
E)  ATP + H2O $\rightarrow$ ADP + Pi + energy 
A)  ATP + ADP $\rightarrow$ ATP 
B)  ADP + ADP + ADP $\rightarrow$ ATP 
C)  ATP + energy $\rightarrow$ ADP + H2O 
D)  ADP + Pi + energy $\rightarrow$ ATP + H2O 
E)  ATP + H2O $\rightarrow$ ADP + Pi + energy

Question 13

What protein structure results from folding or coiling of a polypeptide chain caused by hydrogen bonds between amino acids?

Accepted Answer

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

Question 14

An atom of chlorine has 17 protons and 18 neutrons. Which of the following statements is true?

Accepted Answer

A)  Chlorine atoms have 18 electrons. 
B)  Chlorine has a mass number of 35. 
C)  Chlorine has an atomic number of 18. 
D)  Chlorine has 35 electrons. 
E)  Chlorine has an atomic number of 35. 
A)  Chlorine atoms have 18 electrons. 
B)  Chlorine has a mass number of 35. 
C)  Chlorine has an atomic number of 18. 
D)  Chlorine has 35 electrons. 
E)  Chlorine has an atomic number of 35.

Question 15

Which of the following is mismatched?

Accepted Answer

A)  ribose--RNA 
B)  enzyme--protein 
C)  cholesterol--nucleic acid 
D)  triglyceride--fat 
E)  eicosanoid--prostaglandin 
A)  ribose--RNA 
B)  enzyme--protein 
C)  cholesterol--nucleic acid 
D)  triglyceride--fat 
E)  eicosanoid--prostaglandin

Question 16

Which function of proteins is NOT correctly matched with the example?

Accepted Answer

A)  transport - hemoglobin 
B)  structure - collagen and keratin 
C)  regulation - enzymes and hormones 
D)  protection - packing around organs and glands 
E)  contraction - actin and myosin in muscles 
A)  transport - hemoglobin 
B)  structure - collagen and keratin 
C)  regulation - enzymes and hormones 
D)  protection - packing around organs and glands 
E)  contraction - actin and myosin in muscles

Question 17

Electrons

Accepted Answer

A)  comprise the majority of the mass of an atom. 
B)  are located in the nucleus of an atom. 
C)  have a positive charge of one. 
D)  are the subatomic particles most involved in bonding behavior of atoms. 
E)  do not participate in the bonding of atoms. 
A)  comprise the majority of the mass of an atom. 
B)  are located in the nucleus of an atom. 
C)  have a positive charge of one. 
D)  are the subatomic particles most involved in bonding behavior of atoms. 
E)  do not participate in the bonding of atoms.

Question 18

In the reversible reaction, CO2 + H2O $\longleftrightarrow$  H2CO3 $\longleftrightarrow$  H+ + HCO3- , a decrease in respiration rate will increase the concentration of CO2 in the blood. What will this do to the amount of H+ in the blood?

Accepted Answer

A)  H+ will increase. 
B)  H+ will decrease. 
C)  H+ will be unchanged. 
A)  H+ will increase. 
B)  H+ will decrease. 
C)  H+ will be unchanged.

Question 19

-Phospholipids are important components of the plasma membrane. What does "A" represent on the diagram?

Accepted Answer

A)  phosphorus 
B)  oxygen 
C)  nitrogen 
D)  polar (hydrophilic) region 
E)  nonpolar (hydrophobic) region 
A)  phosphorus 
B)  oxygen 
C)  nitrogen 
D)  polar (hydrophilic) region 
E)  nonpolar (hydrophobic) region

Question 20

The pH value

Accepted Answer

A)  increases with acidity. 
B)  is measured on a scale from 0 to 10. 
C)  is determined by the concentration of hydrogen ions. 
D)  reflects the sodium content of body fluids. 
E)  decreases with alkalinity. 
A)  increases with acidity. 
B)  is measured on a scale from 0 to 10. 
C)  is determined by the concentration of hydrogen ions. 
D)  reflects the sodium content of body fluids. 
E)  decreases with alkalinity.

Exam 2: The Chemical Basis of Life

All of the synthesis reactions in the body are called

Cobalt-60 is used for radiation treatments of cancer. How many electrons does an atom of Co-60 have?

Carbon dioxide is considered a(n)

The minimum energy required to start a chemical reaction

Cobalt-60 is used for radiation treatments of cancer. How many protons does an atom of Co-60 have?

-Phospholipids are important components of the plasma membrane. What does "B" represent on the diagram?

Which of the following is a use of radioactive isotopes?

-Water accounts for 50% of the weight of a young adult female and 60% of a young adult male. What kind of bond is found at "B"?

A cation is

Which of the following is a proton donor?

X-rays can be used to view bones because

Which of the following chemical reactions best represents the decomposition of ATP?

What protein structure results from folding or coiling of a polypeptide chain caused by hydrogen bonds between amino acids?

An atom of chlorine has 17 protons and 18 neutrons. Which of the following statements is true?

Which of the following is mismatched?

Which function of proteins is NOT correctly matched with the example?

Electrons

In the reversible reaction, CO2 + H2O ⟷\longleftrightarrow⟷ H2CO3 ⟷\longleftrightarrow⟷ H+ + HCO3- , a decrease in respiration rate will increase the concentration of CO2 in the blood. What will this do to the amount of H+ in the blood?

-Phospholipids are important components of the plasma membrane. What does "A" represent on the diagram?

The pH value

The Human Organism

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

In the reversible reaction, CO₂ + H₂O $\longleftrightarrow$ H₂CO₃ $\longleftrightarrow$ H⁺ + HCO₃- , a decrease in respiration rate will increase the concentration of CO₂ in the blood. What will this do to the amount of H⁺ in the blood?