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95' SBIOA Exam
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Exam Part A: M/C Part B: Short Answers Part C: Essay Question 94 Exam 95
Exam 97
Exam
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PART A:
Multiple Choice. Answer
all the
following. [1
mark each].
10
.
Species found in Australia tend to be very different than the
general population at large. The best explanation is:
a
. the "upside-down"
gravity causes mutations in their genes
b
. due to their odd bipedal
locomotion, the constant jarring of a male kangaroos
"naughty-bits" causes mutations to occur in the gonads.
c
. Mel Gibson.
d
. it's, like, well, you know, sorta,
like, well, just cuz (do you know what I mean?).
e
. populations of species have been
physically separated from the larger global gene pool.
11
.
The second law of thermodynamics states that as entropy
increases, free energy
a
. remains constant.
b
. decreases.
c
. depends on the chemical reaction
involved.
d
. varies inversely with the absolute
temperature.
e
. is released as heat energy.
12
.
With respect to ATP, the term `high energy bond' refers to
a
. only one of the bonds present in
the molecule.
b
. three of the bonds present in the
molecule.
c
. the bond energies of two of the
bonds present in the molecule.
d
. the amount of free energy available when the bond
is broken.
e
. the ribose sugar part of the
molecule.
13
.
Proteins are to ribosomes as ATP is to the
a
. chromosomes.
b
. centrioles.
c
. Golgi apparatus.
d
. mitochondria.
e
. nucleus.
14
.
In the mitochondria, the function of cytochrome molecules is to
a
. extract water from ATP molecules.
b
. extract energy from ATP.
c
. transfer electrons to atoms of oxygen.
d
. convert oxaloacetic acid to citric
acid.
e
. dissolve NADH and H+.
15
.
The advantage of aerobic respiration to an animal is that it
a
. obtains more usable energy by aerobic respiration.
b
. must always use aerobic
respiration for movement.
c
. must always use anaerobic
respiration for movement.
d
. cannot release energy from food by
anaerobic respiration.
e
. cannot obtain more usable energy
from food by aerobic respiration.
16
.
If the base sequence in DNA is AATCGG, what is the sequence of
the complementary chain?
a
.
TTGCAA
b
.
CCATUU
c
.
*correct* TTAGCC
d
.
UUAGCC
e
.
TTUGCC
17
.
The process by which the anticodons on the transfer RNA molecules
match their complementary codons on the messenger RNA molecules is
called
a
. transcription.
b
. transpiration.
c
. translation.
d
. replication.
e
. translocation.
18
.
During the synthesis of proteins in cells, coded information is
carried from the nucleus to the ribosomes by
a
. transfer RNA.
b
. amino acids.
c
. ribosomal RNA.
d
. part of a strand of DNA.
e
. messenger RNA.
19
.
A farmer bought a bull that was said to be homozygous hornless.
To be sure that this statement was true, he performed a test cross
between the bull and a horned cow. If the bull were indeed homozygous
hornless, the offspring from the testcross would be
a
.
in a ratio of 3 horned to 1 hornless
b
.
all horned
c
.
half horned, half hornless
d
.
in a ratio of 3 hornless to 1 horned
e
.
a*correct*ll hornless
20
.
The light-dependent reaction of photosynthesis is marked by the
a
. production of ATP, carbon dioxide
and reducing power.
b
. production of NADPH+H+ and ATP.
c
. reduction of oxygen and the
production of NADPH+H+
d
. reduction of carbon dioxide and
the release of oxygen.
e
. the fixation of carbon dioxide
with the energy of ATP.
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