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8/10/2019 cape Bio Unit 2 2008
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c
_ 1..
Under anaerobic. conditions, the pyruvic acid
produced by a respiring muscle cell can be
hem S refers to the Krebs cycle shown
below.
~
~
'
~,\.,'~'
.,
l.
H.
nl.
IV
\ A)
(H)
(C)
'T'.'I..J}
oxidizedtc, carnon&oxidc and water
used to regenerate NADH
converted to lactic acid
decarhoxylated to fonn acetyl CoA
moaly
U and manly
I. III and IVonly
II, II! and TVonly
,/ ~p ~ Acetyl I;ocnz.yme A
r-i/ ' "",~LIJ' ,~~'> .l>~o.::zynWA
Kre'bs .',Cycle , 'X; h
)"---..0> CO,
" .-~C~/ .'.
l~
.~,..,...
How many carbon atorilS arC' represented. at.Xand Y respectjvely?
7. The tinal product(s) :Jfglycolysis is/are
(A) acetyl coenzyine A
(E) reduced NADH
, (C) ft:1'P,NADarldpyruvate
'(Dj~ pyruvate,ATP andNADH
s.
CA) .(B)
(C)
(D)
4C and 5C
5C and4C
6C and4C
6C and 5C
9. \\'hich of the following describes an ecosystem? '..,
\ (.A)\ .\
,,)B)
(e)
.(D)
Producers + consumers + decomposers + non":living component
Producers + decomposers + habitats + non~living componentProducers + consumers + habitats + non-living componentConsumers -t- decomposers + habitats + non:..jiving component
10. Tne table below shows the estimated energy content for the trophic levels of a
grassland.
--Levels Enef'gy content/ kJm-2
1----.
Producers 5600Herbivores . 125
. .Omnivores 15
.
Carnivores 10
"0;,
.'
"
Vvhich afthe following indicates the percentage decrease in energy between
producer and herbivore?
(A)
(B)
(e)(D)
0.0022%
0.022%
0.22%'1 ")VI....../0
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'!>;" .~.:
~.
~.
I-4-
~~
"
u.
n.
Which sequence correctly represents the
action ofnitrifying bacteria?
'(A) ~-mnonium -t nitrite --10 nitrate
(B) Nitrogen -t nitrate 4 nitrite
(C) Nitrate -+ ammonium -tmtrogen(D) Nitrite -t nitrate -r ammonium
Item 12 ~fers-to the diagram below.
Carnivore 3
i . Can>!v~l
CarnIy~l iHerbivo l /
~. producer.
'Whatfactorother than sunlight would makethis a self-sustaining ecosystem?
14.
15.
16.
The term 'biodiversity' is BEST described as
(A) the number of species on earth(B) the variety ofdifferent life forms on
earth.
ee) the range of genera on earthCD) the range of ecosystemson earth
The creation of seed banks is an economical
method of maintaining plant diversity.
Preparation of material for storage involves
I. reduction of the moisture content of
the seeds v
II. selection of the best se--As.
m. planting the seedsIV. freezing the seeds
(A) IV only(B) I and II only
(C) n andm only(0). I, II andIVonly
The diagram below shows three adjacent
plant cells I,n andm. The values of theirwaterpoten.tials are given in kPa.
(A) Producers(B) Primary consumers(C) Higher'orderconsumClS
(D) Decomposers
13~ Whichoftbe followingecologicaltenn.srefers
to only one species?
'(A) population(B) Community
(C) Foodcbain
CD) Producer
1 n nI
In which direction would there be a NETflow?
(A) I -+ n andU -+ III(B) . n -+ I andm -+ I(C) n -+ !II and II ~ I(0) .m -+ II and 1 -+ II
.~
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Ucr;! 17 rcfer tv 4 stag::s ir, the ioss of water
fro:n the stem to th.e atmosphere, down a
"'r.Ci::;;- pol.~ntialgradient.
1..fenorvena cava is represented by
y
Figure 18a
-{
(A) i,11,III, IV
(B) t, II, IV, III
(C) II, I, IV, III
(D) IV, III, II, I
Item f8 refers to the darkly staining
materiallabeHed X in Figure 18a which is
often found blocldng Sturcture Y in Figure
:8b.
~F!gure 18b
What is the identity of X?&.
tA) Callose
(B) Lignin((:) Cellulose(P, ~t
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~ '-"
-6-
Which of the following is the correct sequence of events in a single heart beat mown as the
cardiac cycle?I
22.
- -CA) -
(BJ
(C)
--(D)
Atrial systole -7 ventricular systole ~ atrial diastole -+ ventricular diastoleVentricular diastole 4 atrial systole -+ atrial diastole ~ ventricular systoleAria! diastole -* atrial systole -? ventricular systole ... ventricular diastoleVentricular systole ~ atrial systole ~ atrial diastole ~ ventricular diastole
Item 23 refers to thefollowL'lg table showing the distribution of blood volume, presSW"e and velocity in
a human!s vascular system.
Volume Iem' Pressure ImmBg Velocity Iem so}
A 100 100 I 40B SO 30 5
,C 2200 10 0.3
D 300 Z , 18
23. ~ Vlhich set of data corresponds with those for the vena cavae?
Item 24 refers to the follo,",ing diagram. 25. Which combination below shows how
positive feedback affects it
change in outputand the directional flowofanimpulse?
24. The cell labelled ~ in the diagram above is
~ ~ O.~ 'b1 C..)
d>
(('t The outcome of an increase L'1 insulin
production is
an increase in cell permeability to
glucosea ftll) in glucose conversion to
glycogenan increase in blood glucose sugar
levelsan increase inconversion of glycogen
to glucose conversion
pireetionaJ- flow
samedireetion
opposite direction'110directionsame direction
Output
(A) Large
(8) Small(C) Large(0) Small
(A)
(:8)
(C)
(D)
26.
an erythrocyte
a platelet
a monocyte
a neutrophil
(A)
(B)
(C)'(D)
;:::;...
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/.' '..
. ' .r
, ...
41.
- 10 -
A professional athlete and an untrained individual each engaged in 10 minutes of exercise. Theathlete's blood pressure, pulse and breathing rale remained almost unchanged while the un-trained individual experienoed an increase jll aU three parometers. Which of the followingaocounts for this?
'
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. 1 I
I
Item ~s refers, La the table below showing three' components of wbneo smoke,X. 'y' and Z and their effects.
.. \"f~.. ..J..,.. . ~,
~ ::
Pn')lTIo!'es lung
I~~l~c~r
ln~reuses ;;ecretionofm\.lc~s
Thickens lungtissue::
,....-..-.---~. --.-.-._.1
I X i Yi Constricts arterioles I Combines" withi I haemoglobillI St.im\llat. l;:S reJf;l:lSe of I. D~creas~.s leve.ls ofI adrenaltne oxygen in blood
In.~~reas0s.,'.stickiness' j I D.il0ages the lining01vlatelms of anenes
. I
r
z ---- - ....--;
I
I
4:;. \Vhich or tbe following rorrecdy id~ntjfks X, y~nd. Z?
I= X. -I :.~. -~. . i ~I --'1=- --- : - :~,='-~~--~----I (/l-.).. _I T.u- ,,~icotin~ Cat'pon mopmdde1 CD) Tar ICwpcm monoxide Nicotine iI (C)' r~iCOtinc' Cal'bun mono~i(;i~ Tar"-ICD) - -N~nel'rar_: I Carbon monoxide
KFYOUFII\HSH BEF'ORETlL!'\1EIS CALLED, CHECK YOUR \VOF.K ON TillS TEST.
v/
l
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