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General Biology I (Bio 111)Exam 1 Questions and Answers
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GENERAL BIOLOGYExample Exam Questions Exam # 1
Based upon the criteria set out in the textbook and discussed in lecture, which of the following would be
considered to not be alive?
a. mitochondria
b. ribosomes
c. viruses
d. a and b
e. a, b and c
Which of the following are plant organelles and have double membranes and DNA?
a. chloroplasts
b. mitochondria
c. centrioles
d. a and b
e. a, b and c
Which of the following are the best units to use when measuring ribosomes?
a. m
b. cm
c. mm
d. ìm
e. nm
Which of the following is considered to be the major driving force in macro-evolution?
a. artificial selection
b. natural selection
c. diffusion
d. facilitated diffused
e. none of the above
(True or False) The regular laws of Chemistry and Physics do not apply in Biology because living
systems are made up of macromolecules which are much larger than single atoms.
a. True
b. False
The Earth was formed ____________ years ago.
a. 2.0 X 10 -9
b. 3.5 x 10 6
c. 4.5 x 10 6
d. 4.5 x 10 9
e. 3.5 x 10 -12
A solvent which acts to separate charges well would probably be ______ .
a. non-polar
b. polar
c. hydrophobic
d. lipophilic
e. all of the above
,(True or False) The first life on Earth was almost certainly the photosynthetic cyanobacteria (a form of
Eubacteria).
a. True
b. False
The Miller-Urey experiments are cited as evidence for the __________ origin of life theory.
a. special creation origin
b. spontaneous abiotic
c. panspermia
d. Buffy the Vampire Slayer
e. boy or girl-next-door
A solution of 50 % ethanol and 50 % water will have a Dielectric Constant that is ________ 100 % pure
water.
a. higher than
b. the same as
c. lower than
Which group of biomolecules is thought to have been the essential basis for the first life?
a. monosaccharides
b. triglycerides
c. phosholipids
d. fatty acids
e. ribonucleic acids
Erythrocytes or red blood cells (RBCÌs) are approximately ________in diameter.
a. 8 x 10 +2 m
b. 8 x 10 -3 m
c. 8 x 10 -6 m
d. 8 x 10 -9 m
e. 8 x 10 -12 m
Plasma or cell membranes are largely composed of a phospholipid bilayer and are about _______ in
thickness.
a. 5 - 10 x 10 1 m
b. 5 - 10 x 10 -1 m
c. 5 - 10 x 10 -3 m
d. 5 - 10 x 10 -6 m
e. 5 - 10 x 10 -9 m
The cell walls of Fungi are composed of ______ .
a. cellulose
b. chitin
c. pectin
d. phospholipid
e. peptidoglycan
(True or False) The kingdoms Archeabacteria and Eubacteria are as different from each other as from
Eukaryotes.
a. True
b. False
, Rough endoplasmic reticulum is important in the synthesis of _______ for _______ the cell.
a. lipids, import into
b. ribosomes, import into
c. lipids, export out of
d. proteins, export out of
e. proteins, import into
(True or False) The intermediate filaments are cytoskeletal components which are 25 nanometers in
diameter.
a. True
b. False
The theory of Endosymbiosis proposes that:
a. prokaryotic parasites still invade and take over eukaryotic cells from time to time.
b. eukaryotic cells and prokaryotic cells never interacted in the early evolution of life.
c. eukaryotic cells arose by a union (mutualism) of early prokaryotic species.
d. eubacteria are evolutionarily closer to modern animal cells than the archeabacteria.
e. all of the above
(True or False) The mechanism of motion and structure of the eukaryotic flagella is the same as the
flagella found in bacteria.
a. True
b. False
If spherical Cell A is 20 times larger in radius than Cell B, which of the following statements is correct?
(Remember that cell A is the larger one.)
a. The surface area to volume ratio of A is 500 % that of B
b. The surface area to volume ratio of A is 50 % that of B
c. The surface area to volume ratio of A is 10 % that of B
d. The surface area to volume ratio of A is 20 % that of B
e. The surface area to volume ratio of A is 5 % that of B
Which of the following is not one of the six functional classes of transmembrane proteins?
a. cell identity markers
b. cell adhesion proteins
c. cell surface receptors
d. cellulose
e. transport channels
Which of the following buffers would be the best for the physiological pH range of human cells?
a. HCl/H2O, pK = 1.0
b. acetic acid /acetate, pK = 4.3
c. succinic acid/succinate, pK = 5.3
d. citric acid /citrate, pK = 5.8
e. monobasic phosphate/dibasic phosphate, pK = 6.8
Which of the following are an example of molecular chaperones?
a. heat shock proteins
b. hemoglobin
c. cellulose
d. chitin
e. none of the above
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