Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
Chapter 2 The Chemical Level of Organization
1. The branch of science that deals with changes in molecules is
A) biology.
B) pathology.
C) botany.
D) geology.
E) chemistry.
2. The uncharged subatomic particles are
A) atoms.
B) molecules.
C) protons.
D) neutrons.
E) electrons.
3. Which of the following would have a negative charge?
A) an atom
B) a molecule
C) a proton
D) a neutron
E) an electron
4. Atoms of the same element but containing different numbers of neutrons are called
A) isomers.
B) cations.
C) isotopes.
D) anions.
E) none of the above
5. The identity of an atom is determined by the
A) number of protons.
B) number of neutrons.
C) number and arrangement of electrons.
D) size of the atom.
E) mass of the atom.
6. The mass number represents the number of
A) protons in an atom.
B) electrons in an ion.
C) neutrons in an atom.
D) protons and neutrons.
E) neutrons and electrons.
7. Which of the following is the most abundant element in the human body?
A) hydrogen
B) oxygen
C) iron
D) carbon
E) copper
8. How many electrons do MOST atoms need in their outer shell to be stable?
Page 1 of 9
533575496
Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
A) two
B) three
C) four
D) six
E) eight
9. When electrons are shared between one atom and another and the two atoms unite as a result of the electron
sharing,
A) an ion is formed.
B) a molecule is formed.
C) a hydrogen bond is formed.
D) an ionic bond is formed.
E) a covalent bond is formed.
10. All of the elements and compounds that are eaten and used by the body for some function are called
A) inorganic compounds.
B) organic compounds.
C) nutrients.
D) metabolites.
E) enzymes.
11. Which of the following is the most abundant chemical compound in the human body?
A) water
B) acids
C) bases
D) salts
E) organic molecules
12. Carbohydrate molecules may be used for which of the following?
A) a primary energy storage molecule
B) part of nucleic acid structure
C) the body's most important source of energy
D) receptors of the cell surface
E) all of the above
13. The most important metabolic fuel molecule in the body is
A) sucrose.
B) starch.
C) protein.
D) vitamin B12.
E) glucose.
14. Which of the following is a function of proteins?
A) support
B) transport
C) metabolic regulation
D) movement
E) all of the above
15. Proteins are composed of units called
A) amino acids.
B) simple sugars.
Page 2 of 9
533575496
Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
C) fatty acids.
D) adenosines.
E) nucleotides.
16. Molecules that perform most cellular "work" are called
A) proteins.
B) nucleic acids.
C) carbohydrates.
D) steroids.
E) lipids.
17. The nucleic acid DNA
A) is double stranded.
B) contains uracil in place of thymine.
C) contains the pentose ribose.
D) contains protein bases.
E) synthesizes lipids.
Classification of Life’s Major Molecules
Match the numbered Terms with their appropriate position label on the following / attached schematic
Term Number
Term
Position on Schematic
18.
__
Amino acids
-H
19.
__
ATP
-L
Disaccharides
-B
__
20.
__
DNA
-J
21.
__
Fatty acids
-E
22.
__
Glycerol
-F
23.
__
Monosaccharides
-C
24.
__
Nucleotide
-M
Nucleotides
-K
__
25.
__
Peptides
-G
26.
__
Phosphate groups
-N
Polysaccharides
-A
__
27.
__
RNA
-I
28.
__
Triglycerides
-D
Chapter 3 Cell Structure and Function
29. The smallest living things are
Page 3 of 9
533575496
Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
A) proteins.
B) cells.
C) tissues.
D) organs.
E) organ systems.
30. The watery medium inside a cell is known as
A) cytosol.
B) protoplasm.
C) extracellular fluid.
D) cytoplasm.
E) a colloidal gel.
31. Which of the following terms is used to define the structure that separates the contents of a human cell from its
surrounding medium?
A) cell wall
B) cell layer
C) plasma membrane
D) cell boundary
E) All of the above are used.
32. The cell membrane
A) is a watery gel in which structures are suspended.
B) contains the powerhouse of the cell.
C) is the central government of the cell.
D) protects the cell and acts as a filter.
E) carries the cell's hereditary information.
33. The phosphate group of a phospholipid is
A) hydrophobic.
B) hydrophilic.
C) polar.
D) nonpolar.
E) both B and C
34. Structurally, the plasma membrane
A) contains some imbedded proteins.
B) is composed of a bilayer of lipids.
C) contains some carbohydrate molecules.
D) contains some small holes, or pores.
E) all of the above
35. Which of the following is an example of a membranous organelle?
A) lysosomes
B) cilia
C) centrioles
D) ribosomes
E) cytoskeleton
Page 4 of 9
533575496
Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
36. Which of the following are cylindrical extensions of the plasma membrane?
A) microfilaments
B) cilia
C) thick filaments
D) microtubules
E) all of the above
37. Synthesis of most ATP takes place in the
A) ribosomes.
B) rough ER.
C) smooth ER.
D) Golgi apparatus.
E) mitochondria.
Page 5 of 9
533575496
Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
Cell Anatomy
Match the numbered Terms with their appropriate position label on the following / attached illustration
Term Number
38.
__
__
39.
__
__
40.
__
__
Term
Position on
Schematic
Centrioles
-E
Chromatin
-F
Cilia
-U
Cytoskeleton
-J
Cytosol
-C
Fixed ribosomes
-M
41.
__
Free ribosomes
-L
42.
__
Golgi apparatus
-T
Lysosome
-D
__
43.
__
Microvilli
-A
44.
__
Mitochondrion
-S
45.
__
Nuclear envelope
-I
46.
__
Nuclear pores
-P
47.
__
Nucleolus
-H
__
Nucleoplasm
-G
__
Peroxisome
-R
Plasma membrane
-K
Proteasomes
-Q
Rough endoplasmic reticulum
-N
Secretory vesicles
-B
Smooth endoplasmic reticulum
-O
48.
__
__
49.
__
__
50.
__
Page 6 of 9
533575496
Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
THIS PAGE PURPOSELY REMAINS BLANK
Page 7 of 9
533575496
Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
Page 8 of 9
533575496
Biology 105 – Human Biology
Session:
Section:
Class Location:
Days / Time:
Instructor:
Spring 201
55244 / 61816 4 Units
UVC1 St. Helena
F 9:00 AM – 3:50 PM
M 9:00 AM – 11:50 AM
RIDDELL
Illustration of a Generalized Animal Cell
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