A&P I 2013 Exam 1A Name ____________________________________________________________
Russo
Match the following:
A) Suspensions
B) Solutions
C) Colloids
1) Heterogeneous, will not settle.
Diff: 1
Page Ref: 30
2) Heterogeneous, will settle.
Diff: 1
Page Ref: 30
3) Homogeneous, will not settle.
Diff: 1
Page Ref: 29
4) Will not scatter light.
Diff: 1
Page Ref: 29
Answers: 1) C 2) A 3) B 4) B
Match the following:
A) Atomic number
B) Mass number of an element
C) Atomic symbol
5) First one or two letters of an element's name
Diff: 1
Page Ref: 27
6) Number of protons in an atom
Diff: 1
Page Ref: 27
7) Combined number of protons and neutrons in an atom
Diff: 1
Page Ref: 27
Answers: 5) C 6) A 7) B
Figure 2.2
Using Figure 2.2, match the following:
8) Deoxyribose sugar.
Answer: B
Diff: 2
Page Ref: 54 Fig. 2.22
9) Thymine
Answer: D
Diff: 2
Page Ref: 54 Fig. 2.22
10) Guanine
Answer: E
Diff: 2
Page Ref: 54 Fig. 2.22
11) Phosphate
Answer: C
Diff: 2
Page Ref: 54 Fig. 2.22
12) Hydrogen bonds
Answer: A
Diff: 3
Page Ref: 54 Fig. 2.22
Match the following chemical bonds to the correct description:
A) Nonpolar covalent bond
B) Hydrogen bond
C) Polar covalent bond
D) Ionic bond
13) A bond in which electrons are shared unequally.
Diff: 1
Page Ref: 34; Fig. 2.9
14) A bond in which electrons are completely lost or gained by the atoms involved.
Diff: 1
Page Ref: 32, 34; Fig. 2.9
15) A bond in which electrons are shared equally.
Diff: 1
Page Ref: 34; Fig. 2.9
16) A type of bond important in tying different parts of the same molecule together into a
three-dimensional structure.
Diff: 2
Page Ref: 35
Answers: 13) C 14) D 15) A 16) B
Match the following particles to the correct description:
A) Molecule
B) Cation
C) Neutron
D) Atom
17) Electrically charged particle due to loss of an electron.
Diff: 1
Page Ref: 32
18) Neutral subatomic particle.
Diff: 1
Page Ref: 25
19) Smallest particle of an element that retains its properties.
Diff: 1
Page Ref: 25
20) Smallest particle of a compound that still retains its properties.
Diff: 2
Page Ref: 28
Answers: 17) B 18) C 19) D 20) A
Match the following:
A) Mixture
B) Compound
C) Element
21) Water.
Diff: 1
Page Ref: 28
22) Carbon.
Diff: 1
Page Ref: 25
23) Dry ice (frozen carbon dioxide).
Diff: 1
Page Ref: 28
24) Blood.
Diff: 1
Page Ref: 29-30
Answers: 21) B 22) C 23) B 24) A
T/F
25) Glucose is an example of a monosaccharide.
Answer: TRUE
Diff: 1
Page Ref: 43
26) Glycogen, the storage form of glucose, is primarily stored in muscle tissue only.
Answer: FALSE
Diff: 1
Page Ref: 43
27) The lower the pH, the higher the hydrogen ion concentration.
Answer: TRUE
Diff: 1
Page Ref: 40
28) Covalent bonds are generally less stable than ionic bonds.
Answer: FALSE
Diff: 2
Page Ref: 32-34
29) Hydrogen bonds are too weak to bind atoms together to form molecules but are
important intramolecular bonds.
Answer: TRUE
Diff: 1
Page Ref: 35
30) The fact that no chemical bonding occurs between the components of a mixture is the
chief difference between mixtures and compounds.
Answer: TRUE
Diff: 1
Page Ref: 30
31) The acidity of a solution reflects the free hydrogen ions in the solution
Answer: TRUE
Diff: 2
Page Ref: 40-41
32) A chemical bond is an energy relationship between outer electrons and neighboring
atoms.
Answer: TRUE
Diff: 1
Page Ref: 31
33) All organic compounds contain carbon.
Answer: TRUE
Diff: 1
Page Ref: 41
34) A dipeptide can be broken into two amino acids by dehydration synthesis.
Answer: FALSE
Diff: 1
Page Ref: 48; Fig. 2.18
35) The pH of body fluids must remain fairly constant for the body to maintain
homeostasis.
Answer: TRUE
Diff: 1
Page Ref: 40-41
Multiple Choice
36) What level of protein synthesis is represented by the coiling of the protein chain
backbone into an alpha helix?
A) primary structure
B) secondary structure
C) tertiary structure
D) quaternary structure
Answer: B
Diff: 1
Page Ref: 48-49; Fig. 2.19
37) Carbohydrates and proteins are built up from their basic building blocks by the
________.
A) addition of a water molecule between each two units
B) addition of a carbon atom between each two units
C) removal of a water molecule between each two units
D) removal of a carbon atom between each two units
Answer: C
Diff: 2
Page Ref: 42-43
38) Which of the following statements is false?
A) Chemical reactions proceed more quickly at higher temperatures.
B) Chemical reactions progress at a faster rate when the reacting particles are present in
higher numbers.
C) Larger particles move faster than smaller ones and thus collide more frequently and
more forcefully.
D) Catalysts increase the rate of chemical reactions, sometimes while undergoing
reversible changes in shape.
Answer: C
Diff: 2
Page Ref: 38
39) Select the most correct statement regarding nucleic acids.
A) Three forms exist: DNA, RNA, and tDNA.
B) DNA is a long, double-stranded molecule made up of A, T, G, and C bases.
C) RNA is a long, single-stranded molecule made up of the bases A, T, G, and C.
D) tDNA is considered a molecular slave of DNA during protein synthesis.
Answer: B
Diff: 2
Page Ref: 53-55
40) Which of the following is an example of a suspension?
A) cytoplasm
B) salt water
C) rubbing alcohol
D) blood
Answer: D
Diff: 2
Page Ref: 29-30; Fig. 2.4
Figure 3.2
Using Figure 3.2, match the following:
41) Nonpolar region of phospholipid.
Answer: C
Diff: 1
Page Ref: 64; Fig. 3.3
42) Glycocalyx.
Answer: A
Diff: 1
Page Ref: 64; Fig. 3.3
43) Polar region of phospholipid.
Answer: B
Diff: 1
Page Ref: 64; Fig. 3.3
44) Peripheral protein.
Answer: E
Diff: 1
Page Ref: 64; Fig. 3.3
45) Integral protein.
Answer: D
Diff: 1
Page Ref: 64; Fig. 3.3
46) Identification "tags" for the cell.
Answer: A
Diff: 2
Page Ref: 64-65; Fig. 3.3
47) Hydrophilic portion of phospholipid.
Answer: B
Diff: 2
Page Ref: 64; Fig. 3.3
T/F
48) Lipid rafts, found in the cell outer membrane surface, are concentrating platforms for
certain receptor molecules or for protein molecules needed for cell signaling..
Answer: TRUE
Diff: 3
Page Ref: 65
49) Diffusion movement always occurs from areas of greater to areas of lesser
concentration.
Answer: FALSE
Diff: 1
Page Ref: 68
50) Facilitated diffusion always requires a carrier protein.
Answer: FALSE
Diff: 1
Page Ref: 69
51) Cholesterol helps to stabilize the cell membrane while decreasing the mobility of the
phospholipids.
Answer: TRUE
Diff: 1
Page Ref: 65
Multiple Choice
52) Which of the following describes the plasma membrane?
A) a single-layered membrane that surrounds the nucleus of the cell
B) a double layer of protein enclosing the plasma
C) a phospholipid bilayer surrounding the cell
D) a membrane composed of tiny shelves or cristae
Answer: C
Diff: 1
Page Ref: 63-64
53) Which of these is not a function of the plasma membrane?
A) It is selectively permeable but permits water and gases to cross.
B) It prevents potassium ions from leaking out and sodium ions from crossing into the
cell.
C) It acts as a site of cell-to-cell interaction and recognition.
D) It encloses the cell contents in such a way that water I the body is divided into
separate compartments.
Answer: B
Diff: 1
Page Ref: 68
54) Which of the following statements is correct regarding net diffusion?
A) The rate is independent of temperature.
B) The greater the concentration gradient, the faster the rate.
C) Molecular weight of a substance does not affect the rate.
D) The lower the temperature, the faster the rate.
Answer: B
Diff: 2
Page Ref: 68
55) Which of the following is a function of a plasma membrane protein?
A) circulating antibody
B) molecular transport through the membrane
C) forms a lipid bilayer
D) oxygen transport
Answer: B
Diff: 1
Page Ref: 65-66; Fig. 3.4
56) Which of the following would not be a constituent of a plasma membrane?
A) glycolipids
B) messenger RNA
C) glycoproteins
D) phospholipids
Answer: B
Diff: 1
Page Ref: 63-65
57) Passive membrane transport processes include ________.
A) movement of a substance down its concentration gradient
B) movement of water from an area of high solute concentration to an area of low
concentration
C) consumption of ATP
D) the use of transport proteins when moving substances from areas of low to high
concentration
Answer: A
Diff: 1
Page Ref: 68-72
58) Which of the following is NOT a role of cell adhesion molecules:
A) anchor cells to molecules in the extracellular space and to each other
B) mechanical sensors
C) initiators of cell-to-cell signaling for muscle contraction
D) transmitters of intracellular signals that direct cell migration, proliferation, and
specialization
Answer: C
Diff: 2
Page Ref: 80
Fill in Blank
59) Water may move through membrane pores constructed by transmembrane proteins
called ________.
Answer: aquaporins
Diff: 2
Page Ref: 70
60) Hollow cylinders that connect plasma membranes composed of transmembrane
protein are called ________.
Answer: connexon
Diff: 1
Page Ref: 67; Fig. 3.5
Xtra Credit (1 point each)
1) Which of the following statements is false?
A) When acids and bases are mixed, they react with each other to form water and a salt.
B) The more hydrogen ions in a solution, the more acidic the solution.
C) When the hydrogen ion concentration decreases, the hydroxyl ion concentration also
decreases.
D) The pH of blood is slightly basic.
Answer: C
Diff: 3
Page Ref: 40-41
2) You notice that you cannot read your book through a test tube of patient fluid held
against the print, making it so blurred as to be unreadable. There is no precipitant in the
bottom of the beaker, though it has been sitting for several days in a rack. What type of
liquid is this?
A) solution
B) suspension
C) colloid
D) mixture
Answer: C
Diff: 3
Page Ref: 30
3) Which type of cell junction acts as anchors and distributes tension through a cellular
sheet and reduces the chance of tearing when it is subjected to great mechanical stress?
A) gap junctions
B) desmosomes
C) connexons
D) tight junctions
Answer: B
Diff: 3
Page Ref: 66
4) Which of the following is not a factor that binds cells together?
A) glycoproteins in the glycocalyx
B) glycolipids in the glycocalyx
C) wavy contours of the membranes of adjacent cells
D) special membrane junctions
Answer: B
Diff: 2
Page Ref: 65
T/F
5) Aquaporins are believed to be present in red blood cells and kidney tubules, but not in
any other cells in the body.
Answer: FALSE
Diff: 1
Page Ref: 70