A
BIOLOGICAL SCIENCES (BIO 201)
EXAM 0.5—9 September 2013
Please provide your answers to the 25 multiple choice questions on the answer sheet provided. Each multiple
choice question is worth two points.
1.
Excess of this carbohydrate in a human diet may contribute to the “metabolic syndrome”.
A. starch
B. carrageenan
C. cellulose
D. fructose
E. maltose
2.
In the phrase “CHOPKiNS Café Managed By Mine CuZins Mo and Claude” these are the elements used
as fertilizer and consider primary essential nutrients.
A.
carbon, hydrogen, and oxygen
B.
phosphorus, potassium (K), and nitrogen
C.
calcium, magnesium, and boron
D.
iron (Fe), copper (Cu), and chlorine
E.
all of the above are primary essential nutrients found in fertilizer
3.
Which of the following is NOT true of organic chemistry?
A.
carbon is capable having four covalent bonds
B.
it contains organisms ONLY produced naturally without fertilizers and pesticides
C.
carbon—hydrogen bonds are more energy rich than carbon—oxygen bonds
D.
acids with carboxyl groups (i.e., amino acids and fatty acids) are considered organic
E.
carbon, hydrogen, and oxygen compose the bulk of organic molecules
4.
This disaccharide is the primary transport molecule in plants and the major economic product from sugar
cane and sugar beet.
A.
amylose
B.
cellulose
C.
glucose
D.
sucrose
E.
fructose
5.
Dr. Julian’s synthesis of physostigmine from the Calabar bean was significant because it provided
improved treatment of
A.
arthritis
B.
sickle cell anemia
C.
Parkinson’s disease
D.
tuberculosis
E.
glaucoma
6.
Enzymes from this plant are used in medicine, dietary supplements, meat tenderizer, and contact lens
cleaning solution.
A.
castor bean
B.
fever tree
C.
willow
D.
papaya
E.
soybeans
7.
Nitrogen containing secondary metabolites of potential medical interest are likely
A.
terpenes
B.
carotenoids
C.
glucosinolates
D.
anthocyanins
E.
alkaloids
8.
Soybean proteins have been used to make
A.
fire foam for naval ships
B.
D.
linoleum
E.
paper inks
all of the above
C.
natural plastics
9.
The following linear molecule is composed of glucose subunits. Which of the following is true about this
molecule?
A.
B.
C.
D.
10.
11.
12.
13.
provides support to the plant cell and body
is readily digested by most mammals
stains purple with potassium iodide
it is a polysaccharide synthesized by hydrolysis
The figure to the right
A.
is an omega 3 unsaturated fatty acid
B.
is an omega 6 saturated fatty acid
C.
is component of a nucleic acid
D.
is glycerol
E.
all of the above
What is true of the molecule show above
A.
it is hydrophobic
B.
D.
it is glycerol
E.
The following molecule is
A.
a nucleic acid
C.
composed of glucose subunits
E.
all of the above
ω
hydrophilic
C.
it is a blue or red pigment
it stores genetic information
B.
D.
a polymer of monosaccharides
a polypeptide
What was Rosalind Franklin’s contribution to discovering the structure of DNA?
A.
she determined that adenine bonds with thymine and cytosine to guanine
B.
she suggested that DNA is the molecule of heredity
C.
she contributed a photograph from X-ray crystallography that provided structural information
D.
she identified the four nitrogenous bases of DNA
E.
all of the above
14.
A nucleotide is
A. the basic component of nucleic acid
B. may contain the nitrogen base molecules of Adenine, Thymine, Cytosine, Guanine, or Uracil
C. composed of a five-carbon sugar, a nitrogenous base, and a phosphate
D. can be found in ATP
E. all of the above
15.
A water soluble organic molecule that is an important antioxidant in diets and likely to be found as a blue
or red pigment in flowers or fruits.
A.
polypeptide
B.
anthocyanin
C.
carotenoid
D.
alkaloid
E.
amylose
16.
This material is derived from germinated wheat or barley and used to make beer and some milk shakes
A.
sucrose
B.
malt
C.
amylopectin
D.
chymopapain
E.
cellulose
17.
Why are secondary metabolites important to the human diet?
A.
B.
C.
D.
E.
18.
some are vitamins
some provide anti-oxidant protection
some have anti-cancer benefits
some are flavorful and used as spices
all of the above
This Domain of the Tree of Life contains microbes that live in inhospitable environments
A.
Archaea
B.
Eukarya
C.
Eubacteria
An exercise physiologist is interested in determining whether physical exertion decreases reaction time (i.e., react
more quickly) in humans. A simple test that measures the time between a thrown ball and finger reaction time is
developed. A total of 150 softball and baseball players are randomly assigned to one of three exertion treatments
(30 minutes of rest; 30 minutes of low intensity exercise; and 30 minutes of high intensity exercised). Following
the treatment, subjects are allowed to recover for five minutes before their reaction time is measured.
19.
Which of the following is the dependent variable?
A.
recovery
B.
reaction time
C.
the three treatments of exertion
D.
baseball or softball
E.
30 minutes
The following table contains the average reaction time by treatment. A statistical test was performed to test the
hypothesis that physical exertion treatment has an effect on reaction time. The P value is 0.035
Treatment
Average Reaction Time in milliseconds
1 Rest
14.6
2 Low intensity exercise
13.3
3 High intensity exercise
13.4
20.
Which of the following is the most appropriate conclusion from this experiment?
A.
the difference in average reaction time is not statistically significant for the treatments
B.
the control group of low intensity exercisers react more slowly than those at rest
C.
there is a statistically significant difference in reaction time for the three groups
D.
the experiment was poorly designed by using only those who play softball or baseball
E.
all of the above are appropriate conclusions
21.
22.
The complete hydrolysis of cellulose by enzymes will result in
A.
glucose
B.
starch granules
D.
sucrose
E.
fructose
C.
amylose
This biochemist discovered that the amount of guanine and cytosine are equal in amount in DNA
A.
Chargaff
B.
Watson
C.
Franklin
D.
Crick
E.
Wilkins
23. Although the four molecules below have the same number of carbon atoms, they have very different energy
potential when combusted. Rank the following four organic molecules from highest to lowest energy level.
A.
B.
C.
D.
1, 2, 3, 4
1, 4, 2, 3
3, 1, 4, 2
3, 2, 1, 4
H
H
C
O H
H
O
O
C
2. Carbon Dioxide-CO2
1. Methanol-CH3OH
H
H
C
H
H
H
C
O
O H
4. Formic Acid-CHOOH
3. Methane-CH4
24.
These molecule is frequently used to produce human hormones. The base molecule is derived from
natural sources as it is too complex to derive de novo in the laboratory.
A.
taxol
B.
morphine
C.
quinine
D.
salicyclic acid
E.
phytosterol
25.
This alkaloid was discovered in the South American fever treat as a successful cure for malaria in
humans.
A.
taxol
B.
morphine
C.
quinine
D.
salicyclic acid
E.
phytosterol