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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].
31
.
A repressor protein
a
. prevents the action of a
regulatory gene.
b
. blocks the gene transcription.
c
. suppresses the action of
antibodies.
d
. prevents any interference with the
binding of RNA polymerase to DNA.
e
. reduces the rate of secretion of
antibodies.
32
.
If a couple have had 2 boys and a girl, what are the chances that
their next child will be a girl? (And
no, Alan, you can't say "100% because they're going to
adopt.")
a
. 25%
b
. 33%
c
. 50%
d
. 66%
e
. 100%
33
.
During photosynthesis, the free oxygen produced comes from
a
. water.
b
. glucose or starch.
c
. carbon dioxide.
d
. a five-carbon compound.
e
. chlorophyll.
34
.
The role of water in photosynthesis is to
a
. provide energy.
b
. activate chlorophyll.
c
. refract intense sunlight.
d
. supply oxygen.
e
. supply hydrogen atoms and free electrons.
35
.
Which of the following is a structural isomer of glucose:
a
. galactose
b
. fructose
c
. sucrose
d
. both 'a' and 'b'
e
. both `a' and `c'
36
.
Which are common structures in proteins?
a
. alpha helixes
b
. primary alpha sequences
c
. beta pleated sheets
d
. both `a' and `b'
e
. both `a' and `c'
37
.
Which are the major functions of fats?
a
. cell membrane constituent.
b
. source of energy
c
. can be either a cell membrane
constituent or a source of energy.
d
. none of the above.
38
.
If the population of Canada increases at a rate of .2% per year,
in how many years will population double?
a
. .36
b
. 3.6
c
. 36
d
. 360
e
. none of the above
<-Page 3 --- Page 4 --- Part B->
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