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95' SBIOA Exam


93 Exam 
Part A: M/C
Part B: Short Answers
Part C: Essay Question

94 Exam 
Part A: M/C
Part B: Essay Questions

95 Exam 
Part A: M/C
Part B:
Part C:
Part D:

97 Exam 
Part A: M/C
Part B:
Part C:
Part D:


PART A:  Multiple Choice.  Answer all the following.  [1 mark each].

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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 . *correct*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 . *correct*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 . *correct*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 . *correct*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 . *correct*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 . t*correct*ranslation.

            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 . *correct*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 . *ans*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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