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97' 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 these. One Mark each
for 39 questions, then two marks each for the next 8.
Total: 39+16 = 55
(est. time: 1 hour) Note:
I have used the terms NADH and NADH2 and NADH/H+
interchangeably (i.e., they are all meant to be equal in meaning. So
don’t look for tricks there. Also,
if I haven’t subscripted or superscripted stuff, don’t get hung up
on that either. Page
1 Page
2 Page
3 Page 4 11.
During the growth of a tomato plant from a seed, it increases
considerably in biomass. Which of the following
materials, obtained from the environment, are necessary for the
growth and increase in biomass? a)
carbon dioxide and water b)
carbon dioxide, oxygen, and nitrogen c)
water, nitrate, and methane d)
water, carbon dioxide, and mineral salts e)
mineral salts, carbon dioxide, and oxygen 12.
If all four possible blood types are represented in the offspring
of the same parents, the phenotypes of the parents must be a)
both type AB b)
type AB and type O c)
both type O d)
type A and type B e)
type B and type O 13.
Humans are genetically similar to lobsters because a)
both species possess virtually the same glycolytic enzymes. b)
both species can biosynthesize shells. c)
both species can biosynthesize the sex hormones testosterone and
estrogen. d)
both species possess the ability to eat. e)
they pinch, we pinch. 14.
Regarding biochemical reactions: a)
the reduction reaction powers the oxidation reaction and some
waste heat is left over. b)
the oxidation reaction powers the reduction reaction and some
waste heat is left over. c)
the reduction and the oxidation reaction create energy. d)
the reduction and the oxidation reaction destroy energy. e)
the reduction reaction always equals the oxidation reaction. 15.
Genes are: a)
turned "on" by proteins. b)
turned "off" by proteins. c)
sometimes turned off, sometime turned on by proteins. d)
made of denim. 16.
Proteins in cell membranes play a variety of roles.
Which statement is false? a)
membrane proteins catalyse certain reactions. b)
membrane proteins allow facilitated diffusion. c)
membrane proteins hold electrons. d)
membrane proteins help synthesize ATP from ADP and Pi. e)
membrane proteins are used in passive transport. 17. Reactions which occur spontaneously have: a) an overall negative DG b) an overall positive DG c) an overall DG equal to zero d) nothing to do with DG 18. Respiration in green plants takes place a)
only when photosynthesis stops. b)
only in the cells which do not contain chlorophyll. c)
only during the day time. d)
all of the
time. e)
only during the night time. 19. Anaerobic bacteria are bacteria which can live their entire “lives” without oxygen. Where in a bacterial cell would one likely find NADH being oxidized? a) cell membrane b) cytoplasm c) inside of the mitochondrion d) inside of the inside (matrix) of the mitochondrion e) inside the cholorplasts 20. Where in the animal cell is CO2's formed? a) cell membrane b) cytoplasm c) inside of the mitochondrion d) inside of the inside (matrix) of the mitochondrion e) inside the cholorplasts
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