Download Chapter 2: Chemical Basis of Life

Shier, Butler, and Lewis: Hole’s Human Anatomy and Physiology, 10 th ed.
Chapter 2: Chemical Basis of Life
Chapter 2: Chemical Basis of Life
I. Introduction
A. The study of chemistry is essential for the study of physiology because ____________
________________________________________________________________________
B. Biochemistry is ________________________________________________________
II. Structure of Matter
A. Elements and Atoms
1. Matter is ________________________________________________________
2. All matter is composed of __________________________________________
3. Examples of elements are __________________________________________
4. Compounds are __________________________________________________
5. Elements needed by the body in large amounts are called _________________
__________________________________________________________________
6. Six examples of bulk elements are____________________________________
__________________________________________________________________
7. Elements needed by the body in small amounts are called _________________
__________________________________________________________________
8. Trace elements are used by the body for _______________________________
__________________________________________________________________
9. Ultratrace elements are ____________________________________________
10. Elements are composed of particles called ____________________________
11. Atoms that make up elements are chemically __________________________
B. Atomic Structure
1. The central portion of an atom is called________________________________
2. The nucleus contains ______________________________________________
3. Electrons carry a ___________________________________________ charge.
4. Electrons are located ______________________________________________
5. Protons carry a _____________________________________________ charge.
6. Neutrons are electrically ___________________________________________
7. The nucleus of an atom is ___________________________________ charged.
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8. A complete atom is electrically ______________________________________
9. The atoms of different elements contain different numbers of ______________
10. An atomic number is _____________________________________________
11. Carbon has an atomic number of ____________________________________
12. One atom of carbon contains ________________________________ protons.
13. The weight of an atom is primarily due to _____________________________
__________________________________________________________________
14. The atomic weight of an atom is ____________________________________
15. The atomic weight of carbon is _____________________________________
16. One carbon atom has _______________ protons and ____________ neutrons.
C. Isotopes
1. Atoms of the same element can vary in atomic weights because ____________
__________________________________________________________________
2. An oxygen atom with an atomic weight of 17 has__________________protons
and _______________________________________________________ neutrons.
3. Isotopes are _____________________________________________________
4. The number of electrons in an atom equals _____________________________
__________________________________________________________________
5. Radioactive isotopes release ________________________________________
6. Examples of radioactive isotopes are __________________________________
7. Three common forms of atomic radiation are ___________________________
__________________________________________________________________
8. Alpha radiation consists of__________________________________________
9. Beta radiation consists of ___________________________________________
10. The most penetrating type of atomic radiation is________________________
D. Molecules and Compounds
1. Two or more atoms may combine to form______________________________
2. A molecular formula depicts ________________________________________
3. The subscripts in a molecular formula indicate __________________________
4. When atoms of different elements combine molecules of __________________
_____________________________________________________________ form.
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E. Bonding of Atoms
1. Bonds form when _________________________________________________
2. Electrons of an atom are found ______________________________________
3. The first electron shell can hold ______________________________________
4. The second electron shell can hold ___________________________________
5. The third electron shell of an atom with an atomic number 18 will hold ______
__________________________________________________________________
6. ___________________________________________________ are filled first.
7. An atom will react with another atom if _______________________________
__________________________________________________________________
8. Inert atoms are ___________________________________________________
9. Atoms with incompletely filled outer shells ____________________________
____________________________________________________ to become stable.
10. Ions are ________________________________________________________
11. A sodium atom ____________________________________ to become stable.
12. A chlorine atom ___________________________________to become stable.
13. If an atom loses an electron, it becomes _______________________ charged.
14. If an atom gains an electron, it becomes _______________________ charged.
15. An ionic bond forms when _________________________________________
16. A covalent bond forms when _______________________________________
17. When one pair of electrons is shared between atoms, a __________________
_________________________________________________________ is formed.
18. When two pairs of electrons are shared between atoms, a ________________
_________________________________________________________ is formed.
19. When three pairs of electrons are shared between atoms, a _______________
_________________________________________________________ is formed.
20. A structural formula shows ________________________________________
21. When electrons are not shared equally in a covalent bond, a ______________
_____________________________________________________molecule forms.
22. An important example of a polar molecule is __________________________
23. A hydrogen bond is ______________________________________________
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F. Chemical Reactions
1. Reactants of a chemical reaction are __________________________________
2. Products of a chemical reaction are ___________________________________
3. A synthesis reaction occurs when ____________________________________
__________________________________________________________________
4. A decomposition reaction occurs when ________________________________
__________________________________________________________________
5. An exchange reaction occurs when ___________________________________
__________________________________________________________________
6. In reversible reactions, products can change ____________________________
7. Catalysts are _____________________________________________________
G. Acids, Bases, and Salts
1. When salts are put into water, they dissolve into_________________________
__________________________________________________________________
2. Substances that release ions in water are called__________________________
3. Acids are _______________________________________________________
4. Bases are _______________________________________________________
5. A salt is ________________________________________________________
H. Acid and Base Concentrations
1. Hydrogen ion concentration is typically measured in _____________________
__________________________________________________________________
2. The pH scale is ___________________________________________________
3. A solution with a hydrogen ion concentration of 0.1 grams per liter has a pH
value of ___________________________________________________________
4. A solution with a hydrogen ion concentration of 0.001 grams per liter has a pH
value of ___________________________________________________________
5. The pH scale ranges from _____________________ to __________________ .
6. Each whole number on the pH scale represents__________________________
__________________________________________________________________
7. As the hydrogen ion concentration increases, the Ph _____________________
8. A neutral pH is ___________________________________________________
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9. Acidic solutions have pH values that are _______________________________
10. Alkaline solutions have pH values that are ____________________________
11. Solutions with more hydrogen ions than hydroxide ions are _______________
12. Solutions with more hydroxide ions than hydrogen ions are _______________
13. Solutions with equal numbers of hydrogen ions and hydroxide ions are _____
__________________________________________________________________
14. The normal pH of blood is _________________________________________
15. Alkalosis is _____________________________________________________
16. Acidosis is _____________________________________________________
17. Buffers are _____________________________________________________
III. Chemical Constituents of Cells
A. Introduction
1. Chemicals that contain carbon and hydrogen are ________________________
2. Chemicals that generally do not contain carbon and hydrogen are ___________
__________________________________________________________________
3. Nonelectrolytes are _______________________________________________
4. __________________________________ chemicals usually dissolve in water.
5. __________________________ chemicals usually dissolve in organic liquids.
B. Inorganic Substances
1. Introduction
a. Four common inorganic substances in cells are ____________________
____________________________________________________________
2. Water
a. The most abundant compound in living material is _________________
b. Most metabolic reactions occur in water because __________________
____________________________________________________________
c. In the body, water transports __________________________________
____________________________________________________________
3. Oxygen
a. Organelles use oxygen to _____________________________________
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b. A continuing supply of oxygen is necessary for ___________________
____________________________________________________________
4. Carbon Dioxide
a. Carbon dioxide is produced when ______________________________
b. As carbon dioxide moves into body fluids and blood, it forms ________
____________________________________________________________
5. Inorganic Salts
a. Inorganic salts are sources of __________________________________
b. Electrolyte balance is ________________________________________
C. Organic Substances
1. Introduction
a. Four groups of organic substances in cells are_____________________
____________________________________________________________
2. Carbohydrates
a. Three things carbohydrates supply to cells are ____________________
____________________________________________________________
b. Three elements always found in carbohydrates are _________________
____________________________________________________________
c. The ratio of hydrogen to oxygen in carbohydrates is ________________
d. Two types of simple sugars are ________________________________
e. Monosaccharides have ________________________________ carbons.
f. Disaccharides have ___________________________________ carbons.
g. Three examples of monosaccharides are _________________________
____________________________________________________________
h. Two examples of disaccharides are _____________________________
i. Complex carbohydrates are ___________________________________
j. Polysaccharides are built from _________________________________
k. Three examples of polysaccharides are __________________________
____________________________________________________________
3. Lipids
a. Lipids are soluble in _________________________________________
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b. Three examples of lipids are __________________________________
____________________________________________________________
c. Three elements found in fat molecules are _______________________
d. Fats have a smaller proportion of_______________ than carbohydrates.
e. The building blocks of fat molecules are _________________________
f. All fatty acid molecules include ________________________________
g. Two ways fatty acid molecules differ are ________________________
____________________________________________________________
h. A saturated fatty acid is ______________________________________
i. Fatty acids with one double carbon-carbon bond is _________________
j. Fatty acids with more than one double carbon-carbon bond is ________
____________________________________________________________
k. A single fat molecule is called a _______________________________
l. One triglyceride contains _____________________________________
m. Saturated fats contain _______________________________________
n. Unsaturated fats contain ______________________________________
o. The number of fatty acid chains in a phospholipid molecule is _______
p. The portion of a phospholipid molecule that is soluble in water is _____
____________________________________________________________
q. The portion of a phospholipid molecule that is insoluble in water is ___
____________________________________________________________
r. Phospholipids are important in _________________________________
s. Steroids contain connected rings of _____________________________
t. An important steroid found in all body cells is _____________________
u. Cholesterol is used to synthesize _______________________________
4. Proteins
a. Six important functions of proteins are __________________________
____________________________________________________________
b. Enzymes are _______________________________________________
c. Four elements always found in proteins are _______________________
____________________________________________________________
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d. One element sometimes found in proteins is ______________________
e. The building blocks of proteins are _____________________________
f. Amino acids have an____________________________at one end and a
_______________________________________________ at the other end.
g. The twenty amino acids differ _________________________________
h. Peptide bonds are ___________________________________________
i. A polypeptide is ____________________________________________
j. The four levels of protein structure are ___________________________
____________________________________________________________
k. The primary structure of a protein is ____________________________
l. In secondary structure, a polypeptide chain forms __________________
____________________________________________________________
m. ______________________________ determines secondary structure.
n. The folding of secondary structure is called ______________________
o. Protein function is determined by ______________________________
p. When a protein denatures, it __________________________________
q. Four things that cause a protein to denature are ___________________
____________________________________________________________
r. The quaternary structure of a protein forms when __________________
____________________________________________________________
5. Nucleic Acids
a. Genes are made of __________________________________________
b. Genes are _________________________________________________
c. The five elements found in nucleic acids are ______________________
____________________________________________________________
d. The building blocks of nucleic acids are _________________________
e. The three parts of a nucleotide are ______________________________
____________________________________________________________
f. A polynucleotide is __________________________________________
g. Two major types of nucleic acids are ___________________________
h. RNA contains the sugar ______________________________________
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i. DNA contains the sugar ______________________________________
j. _______________________________ is a single polynucleotide chain.
k. ______________________________ is a double polynucleotide chain.
l. The function of DNA is ______________________________________
m. The function of RNA is _____________________________________
n. DNA has the unique ability to _________________________________
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