頁一第張七第 日八十月三年卯丁曆夏
28.Which of the following
are the correct
solutions for X, Y and
1987中學會考
27.
試題預習專欄
生物(卅 )
明洩出版社
MILL & DALE PRESS
Revision Exercise
for
Cert. Exam. (1987)
BIOLOGY (30):
Unit 13: Multiple Choi ce
Test II (cont'd)
Directions: The following two questions refer to the graph below, which shows the relationship between the incidence of tooth decay in children and the fluoride content in part per million
(ppm) of drinking water.
Average number of tooth
decay per child
2
3
0:51 Fluoride concentration
in ppm
26.which of the following
is NOT a correct conclusion from the graph?
A. The incidence of
tooth decay drops rapidly when the fluoride concentration increases from to 1 ppm.
B. At fluoride
concentration of 0.5 ppm, the incidence of tooth decay is about 5 per child.
Children drinking fluorius Led vater have an average lower number of decayed teeth than those who drink ordinary water.
A child would have
2 decayed teeth if
he has been drinking water with fluoride concentration of 2
ppm.
27. From the graph, it
can be concluded that the most suitable fluoride
concentration In ppm in drinking water to reduce tunth decay is A. 0.5
B. 1.
C. 3
D. 5.
Directions: An experi- ment is set up as, below to show tlie liberation of carbon dioxide from insects. Answer the
following three questions with reference
to the diagram.
insect
to
1987中學會考
Z
Y
Line water
Sodium hydroxide solution Sodium hydroxide solution
Lime water
Lime
water
Lime water
Südium hydroxide solution`
Sodium hydroxide solution
Lime water
Line water
Lime water
Sodium hydroxide solution:
29. If the experiment is successful, which of the following is the correct observation of the selations in X, Y and Z at the end of the experiment?
A.milky
X
Y
Z
clear
clear
clear milky milky
B. clear milky C. clear milky clear D. clear
30.If a potted plant is
used instead of the insects, which of the following
precaution(s) is/are necessary to ensure the success of the experiment?
(1)The potted plant
should be
destarched before the experiment. (2)The pot should be
enclosed by a polythene bag. (3)The belljar is
enclosed by a black paper.
A. (1) only
B. (1) and (2) only c. (3) only
D. (2) and (3) only 31,The graph shows the
relationship between the number of cigarettes smoked daily and the rate of death due to lung cancer among the
smokers.
Number of death
due to lung cancer
per million people
試題預習專欄
2.
附加數( 卅 )
for
「明出版社
`MILL & DALE PRESS
Revision Exercises
Cert. Exam. (1987)
ADDITIONAL NATHEMATICS (30)
Solutions to Exercise
1. f(x)=x2+ax +Uc+C
f(x)=3x2+2ax+u (a)Since x is a factor,
‚f · {V}~3{0)+2a{0}+b={}
30
10
10 20 30. 40 Number of cigarettes smoked each day
f(a)=(1)3⁄4+a(1)2+c=b
a+c=5.
.(2)
(1) and (2) give: aal, c=4,
*,0-1, bm0, cah (Ans.)
• (U+X}@C=ub+7@
(b)
WAH KIU YAT PO
Which of the fol.
conclusion CANNOT be deduced from the graph? -
A. Lung cancer is the most common cancer found among the cigarette smokers. B. The frequency of
lung cancer is proportional to the number of
cigarettes smoked
each days.
C. Lung cancer is leag
frequent among the non-smokers.
D. The frequency of
lung cancer for smokers of over 40 cigarettes excl day is 30 times higher than that of the non- smokers.
Directions: The following three questions refer to
a situation in which & man was confined in a close chamber without nuy ventilation. 32.which of the
following graph best represents the change of breathing rate of gan? (Horizontal the axis: time; vertical axis: breathing rate).
1.
R.
N
3.Which of the
following change in the room would account for the change of breathing rote of the man” AA increase of
nitrogen concentration
1. An herease of carbon dioxide concentration
C. A decrease of
oxygen
concentration
#10152
Directions: The following three questions refer to an experiment in which five epidermal strips of the leaf. of Thoee
discolor are immersed in 5 solutions of concentrations from
0.1 M to 0.5 M. After 10 minutes the cells of the epidermisnre observed under microscope and their appearance is shown below.
In solution {
In solution R
IN
96lution q
In solution S
•In solution T
55. Which of the following
No
D. An increase of
moisture
54. If enough soda lime
was placed in the room, which of the following graph best. represents the change of breathing rate of the man? (Horizontal axis: time; vertical axis: breathing rate). A.
BP:PC-2:3 (Ang.) -Aġsin, (3+1) BQ-BC÷3BA where q lies on BC and
AQ:00-1:3 (ii)In ABCQ,
(Ana.)
(3+2)OP=2QC+39B
-20C+3(9G+CB)
-5QC+3CB -5(PAC)+3CB
(5AC+4CB)
=5AC+4CB
But 5AC+4CB=2AC+3AG+3CB+CB
20
=2AC+3AN+CB
39P-JAB+2AC÷CE
(Ano.)
(a)Substitute zaxsiy into
Z+i
z+2
**x+ïy+i.
x+iy
·3AB
is the correct concentration of the solutions?
Σ
9.3 M
0.4 M
0.5 M
0.1 M
0.2 M
0.5 M
0.1 M
0.5 M
0.4 M
0.2.M
Concentration of the solution
Solution R Solution 5 Selution
0.5.M
e'
(x+2)+y
2
2
+y+2x+y=0
Hi Fii
which is the required locus, an equation of
a circle with centre (-1,-1) and radius
√(-1)2+(-4)2-0
1.6. 15 (Ans,)
(b) tane
e-, •[2] -2
the polar form of √3+1=2(cos rising)
• (√+i)"
*2(confieing)
(cos risin")
Similarly,
·B-1
(Ans.)
Solution P Solution Q:
0.1 N
0.4 M
RO
N70
4.5.4
0.4 M
1.2.M
0.5 M
三期星 日五十月四年七八九一曆公年六十七國民華中
36.The above information indicates that the osmotic potential of the protoplasm of the epidermal cell is
A. 0,1 M
B. 0.2 M4
C. 0.5 M
D. 0.4 M
37.The epidermal cells. of the lauf of Rhoen
iscolor ure preferred to other type of cells for this experiment because these epidermal cells A. are larger than
other type of cells.
B. have a cell wall
more permeuble
than other type of cells.
C. bave a cell
membrane more permeable thu other type of cells.
D. have u coloured
cytoplyan.
Directions: The following three questions refer to the graph below, whi ch shows the change in weight of potato strips placed in sucrose solution of different asmotic potential. The nitial weight of each potato strip is 2.0 g..
Ratio of final weight te
initial weight
-5-10-151-20 -25
Osmotic potential of sucrose solution (MPa)
38.The final weight of the potato strip placed in water is A. 1.2 g
B. 1.6 g
C. 2.0 g
D. 2.4 K
39.What is the water
potential (MPa) of the potato calls? A. -5
B. -10
C. -15
D. -20
pancreas
glucose
lycogen
liver
blood glucose level
41.What is X?
А. Майтане
B. Insulin
G. Bile
D. Pancreatic juice
42.X reaches the liver
through
A. blood
D. lymph
C. pancreatic duct D. bile duct
45.Which of the following statements is CORRECT?
A. There is no
relationship between the concentration of X and the blood glucose level.
B. High concentration
of X leads to the increase of blood glucose level.
C. Low concentration
of X leads to the increase of blood glucose level.
D. High concentration of X decreases the amount of glycogen in the liver.
44.Which, of the following #tatements is true for all poikilothermic animals?
A. Their body
temperature
fluctuates with that of the surroundings.
B. Their metabolic
rate is usually high.
C. They cannot survive in cold weather,
D. Their body
temperature is constantly low.
45. During the winter in: temperate climates, -the adil us, and
caterpillers of butterflies are not alive. On the other. hand, the adults and
larvae as vell so the pupae of honey bees
cap overwinter. What is the reasonable explanation of the above phenomenon?
A. The butterflies are
poikilothermic whereas the boney bees are homoiothermic. B. Both butterflies
and honey bees are. poikilothermic but the hive can be kept warm in winter.
ARIEZ
40.Which of the following
is/are demonstrated in this experiment?
lasmolysis occurs when the external osmotic potential.. is lower than -10 (2)Sucrose molecules
diffuse into the potato strips. (3)The cell membrane
of the potato cella
is semi-permeable.
A. (1) only
B. (2) only
c. (3) only
D. (1) and (3) only
Directions: The following
4.
questions refer to the di agrum below:
(from above results)
+cos
2+ bx + c
a-b+c=0.
at (3,0) 9a+3b+c=0.
at (1,12). a+b+c=12. (2)-(1);
2a+b=0 b-20 (1)-(3):
C. The adults and
caterpillera of butterflies are poikilothermic
while their pupae are homoiothermic. D. The butterflies
cannot obtain food in winter but the honey bees can,
6. The functions common
to the skin of a mammal and the epidermis of a flowering plant are (1)to protect the
internal tissues. (2)to prevent the
invasion of harmful organisms.
(3)to aid in exchange
of gases.
b)
i) tank
i..y-xtan
(Ang.)
which is the equation of OP.
at (-10)
.(1),
.(2)
.(5)
c=9 (Aus.)
b=6 ..α-3
The equation of the curve ia:
y=9+6x-3x2
(ra)
(b)Since (x+2) i
factors,
• 1 ( 2 ) = ( − 2) 3 +
1.e.4a+c8′′
(c)Again,
AC
(i) Using the result of
(a),
(342)AP-2AC+3AB
where lies on BC and
(x+2) (1+y)i+(1+y)y
(x+2)2 + y2
Since this expression
is purely imaginery, the real part is zero,
-2.com()+1sin())
{√3-1)"
-2(cosisin)
(√3+1)+(√3-1)"
(Ans.)
1
x-1
and y-12
P(xy)
(ang.)
(1)
(4)to prevent the
undue loss of
water.
Which of the
following
combinations is true?
A. 1, 2 and 3 only B. 2, 3 and 4 only. C. 3, 4 and 1 only D. 1, 2 and 4 only
47. The blood vessel
which supplies oxygen and Butrients to the heart is
A.. Vena cava. B. Pulmonary vein C. Auṛtu
D.. Coronary artery
Directions: The following. three questions are based on the diagram below.
I
glass tubes
balloon
-bottle
rubber
sheet
48.Which of the following structures of a manimal is analogous to the
rubber sheet?
A. Lung-
B. Diaphragm
C. Intercostal muscle D. Body wall-
-
49.Which of the following
structures of a
mammal is analogous to the balloon in the apparatus?
A. Alveoli
B. Lungs
C. Larynx
D. Traches
50.Which of the
followings is THE when the rubber lieet is pushed up from position X to
position Y?
glass tube.
100
inn
ano
.UT
Pressure inside
increased? decreased
balloons
air flow long
JO. 3218
balloon.
decreused
decreased
Lucreased
Increased
increased
Pressure inside
the bottle
increaseil
decreased
Solutions:
26. D 27.
increased
decreased
decreas
B
28. B
29. D 30 D 31. A 132. C 30. B 34. D
35 B St. B
37. D 38. D 59. B 40. D 41. B
42. A
43. C 4.4. A 45. B 4. D
47. D 48. B 49. B 50. D
te
४
-4x
(ii)Volume required
-yax
(ii)c=-4
(c) ('x" (1-x) * dx
22
tan dx
-tean2 Sax2dx
2
3. h
Ttan2x0
Jo. 1+x
2
-Thtand cubie
uni ta
(Ana.
Where
sec ode
Aec
a)(1-x).“
(b)x^(1-x) = ( x ) { i + * ̈) + ¤
putting X-tane
.5
Bánd this is a max. pt.
The required ares
-(9+ bx-3x2)dx
-(9x+3x2-x"}},
328 units
(лин.)
Nows,
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