INTEGRATED SCIENCE 7

INTER. SCIENCE

1. What is biological classification?
2. State three importance of classification
3. State 2 characteristics each of the following;
a)prokaryotae b) State two characteristics each
of
the following protoctista
4. Give two examples of each of the following;
a)prokaryotae b)protoctista
5. What is specialized cell?
6. Give two examples of a specialized cell and
state one function for each.
7. What is a tissue?
8. Give one example of a tissue each of plant
and
animals.
……………………………………………………
9. Define the following terms;
a)atom b) molecules c)ions
10. Name the ions formed when an atom
a) Gains electron b) loses electron
11. Draw the structure of an atom showing the
position of protons, neutrons and electrons.
12. State 3 components of air
13. Tabulate the differences between covalent
bond and ionic bond.
14. Define the following;
a)atomic number b)mass number c)isotopes
………………………………………………
15. Define; a) mole concentration (mol dm-3)
b)
mass concentration (g dm-3)
16. Describe briefly how you wound prepare
500cm3 of 1M NaCl solution in the laboratory
[Na=23, Cl=35.5]
17. Define the following; a) avocado constant/
number b) mole c) molar mass
18. Define the following; a) relative atomic
(RAM)
b) relative molecular mass (RMM)?
19. What is the concentration in moles of NaOH
per dm3 of solution containing,
120g of NaOH in 1000cm3m of solution [H=1,
O=16, Na=23]
20. 2.0 dm3 of an aqueous solution contains
25.5g sodium chloride.
Calculate the concentration of solution in mol
dm-3 [Na=58.5] ……………………………………………………..
21. Define; a) stable nuclide b) unstable nuclide
22. What is radioactivity?
23. State two causes of radioactivity
24. State 3 harmful effects of radioactivity
25. State 2 ways of protecting humans from
radioactive exposure.
………………………………………………….
26. What is photosynthesis?
27. State 3 conditions necessary for
photosynthesis
28. What is balanced diet?
29. Relationship between diseases and nutrients
………………………………………………….
30. What is indigestion?
31. State 3 causes of indigestion in humans
32. State 3 effect of indigestion
33. What is constipation?
34. State 3causes of constipation
35. State 3 effect of constipation
36. State 3function of the liver
37. State 3 diseases of the liver
………………………………………………
38. What is respiration?
39. State 2 importance of respiration
40. Distinguish between aerobic and anaerobic
respiration.
41.state 3 disorders associated with the
respiratory organ. ………………………………………………………
42. Define the following; a) diffusion b) osmosis
c)
plasmolysis
43. State 2 factor that affect osmosis
……………………………………………………..
44. State three component of blood and give
function of each
45. Describe the process of blood clotting
46. State 3 importance of blood clotting
………………………………………………………
47. Distinquish between excretion and egestion.
48. Give five excretory organs and state 1
function
each
49. Define the following; a) ultra –filtral b)
selective re –absorption
50. Mention 3 disorders associated with the
excretory organs. ………………………………………………………
51. Distinquish between voluntary and
involuntary
action.
52. State 1 importance of reflex action.
53. State 2 function of each of the following;
a)thyroxin b)adrenaline c)insulin
54. State two effect of under- production of; a)
thyroxin b) adrenaline c) insulin
55. Distinquish between hypogeal and epigeal
germination of seeds
56. State 3 conditions necessary for seed
germination.
57.give one example of a plant that is
propagated
by; a)corm b)bulb c)rhizomes d)stolon
e)runners.
58. State 2 advantages and1 disadvantage of
vegetative propagation
59. What is sexual maturity?
60. State 2 female secondary sexual
characteristics
61. State 2 male female secondary sexual
Characteristics ………………………………………………………….
62. Describe the following types of twins
a)fraternal twins b) identical twins c)Siamese
twins
63. State two importance of pre- natal care
during
pregnancy
64. What is ectopic pregnancy?
65. State two causes of ectopic pregnancy.
66. Distinguish between infertility and
impotency.
67. What is fibroid?
68. State two symptoms of fibroid
69. State 3 problems associated with
menopause ………………………………………………..
70. What is variation?
71. State 2 examples each of;
a)continuous variation b)discontinuous
variation
72. What is mutation?
73. State 3 causes of mutation
74. Explain how organisms develop resistance
to
chemicals.
75. Define the following;
a)chromosome b)genotype c)phenotype
76. Using appropriate crosses, explain the result
of a marriage between a homozygous tall
woman
and homozygous short man.
77. What is sex – linked character?
78. List 3 sex –linked characters in humans
79. With appropriate crosses, explain why sex-
linked characters are not transferred to woman
80. What is evolution?
81. List 4 evidence of evolution.
82. State Lamarck’s theory evolution
83. State Darwin’s theory of evolution
………………………………………………………
84. What is soil?
85. State 5 functions of soil
86. State 3 component of the soil
87. State 3 characteristics each of;
a) Sandy soil b) loamy soil c) clayey soil
88. Describe how each of the following types of
rocks are formed; a) igneous rock b)
metamorphic
rock c) sedimentary rock.
89. Give 3 examples of the following types of
rocks
named above
90. What is weathering of rocks?
91. State 3 agent of each of the following
weathering process; a) physical weathering b)
biological weathering c) chemical weathering