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BIO 151 Portage Learning -BIO 151 EXAM 1 - Practice Questions With Complete Solutions
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- BIO 151
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- Portage Learning
BIO 151 Portage Learning -BIO 151 EXAM 1 - Practice Questions With Complete Solutions
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BIO 151 EXAM 1 - Practice Questions With CompleteSolutions
10) A covalent chemical bond is one in which ________.
A. electrons are removed from one atom and transferred to
another atom so that the two atoms become oppositely charged
B. outer-shell electrons of one atom are transferred to fill the
inner electron shell of another atom
C. outer-shell electrons of two atoms are shared so as to
satisfactorily fill their respective orbitals
D. protons and neutrons are shared by two atoms so as to satisfy
the requirements of both atoms Correct Answer C. outer-shell
electrons of two atoms are shared so as to satisfactorily fill their
respective orbitals
11) What happens to the concentration of protons in black coffee
(pH 5) when you add milk (pH 6.5)?
A. It decreases
B. It increases
C. It stays the same Correct Answer A. It decreases
12) The element present in all organic molecules is ________.
A. carbon
B. hydrogen
C. nitrogen
D. oxygen Correct Answer A. Carbon
32) Refer to the figure. If you examine side A after three days,
you should find ________.
a. a decrease in the concentration of NaCl and glucose and an
increase in the water level
, b. a decrease in the concentration of NaCl, an increase in the
water level, and no change in the concentration of glucose
c. no net change in the system
d. a decrease in the concentration of NaCl and a decrease in the
water level
e. no change in the concentration of NaCl and glucose and an
increase in the water level Correct Answer d. a decrease in the
concentration of NaCl and a decrease in the water level
34) Suppose a cell has the following molecules and structures:
enzymes, DNA, ribosomes, plasma membrane, and
mitochondria. It could be a cell from ________.
A) an animal but not a plant
B) any kind of prokaryotic organism
C) a plant but not an animal
D) nearly any eukaryotic organism Correct Answer D) nearly
any eukaryotic organism
9) Two characteristics of water make it different from most
other compounds: Its solid state is __________ its liquid state,
and it requires ___________ heat to change to its gaseous state.
A. less dense than; large amounts of
B. more dense than; small amounts of
C.less dense than; small amounts of
D. more dense than; large amounts of
E. just as dense as; significant amounts of Correct Answer A.
less dense than; large amounts of
A molecule with the formula C13H26O13 is a
A. carbohydrate.
B. lipid.
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