1. A rectangular
book of steel has dimensions of 5 meters x 10 meters x 15 meters and weights,
1, 000 N. How should this block be placed on a surface to exert the least
pressure on the surface?
A. On the 10 meters by 15 meters side
B. On the 5 meters
by 15 meters side
2. Which technology
can lead to the formation of a new genetic trait?
A. Embryo transplant
B. Exposure to radiation
3. Which of the
following process best explains the evolution of life forms or gradual
transformation of species?
A. Natural selection
B. Genetic drift
4. What thin
structures are essential for cytokinesis, amoeboid movement, and changes in
cell shape?
A. Pseudofilaments
B. Microfilaments
5. What are the
small hair-like structures that serve as a sensory function in eukaryotic
cells?
A. Cilia B. Actin filaments
6. The union of an
ovum and sperm inside a test tube is
A. In vitro fertilization B. Pollination
7. The source of
water pollution is when water from a river is mixed with the contents of a
septic tank, this is called
A. Water
condensation
B. Hypertrophication
8. Dengue is an
infectious disease transmitted by an organism classified under which phylum?
A. Arthropoda B. Echinodermata
9. What is the main
organ for respiration?
A. Lungs B. Nose
10. Which of the
following activities help reduce water pollution?
A. Use of soap and
detergents
B. Treating waste water prior to discharge
11. Of the following
which is an example of physiological adaptation that allows survival among
plants or animals?
A. Frog’s powerful hind to jump away from predators
B. Walking stick’s
unique shape and color
12. Humans reproduce
when an ovum is combined with a sperm leading to the development of an embryo.
This form of reproduction is called
A. Budding B. Fertilization
13. Iron is what type
of magnetic material?
A. Ferromagnetic
B. Paramagnetic
14. Which type of
reaction does the general equation (AB + energy A + B) show?
A. Endothermic
synthesis
B. Endothermic decomposition
15. Which of the following
is a heterotroph?
A. Grasshopper B. Algae
16. Aside from solid,
liquid, and gas what is the fourth form of matter?
A. Plasma B. Colloid
17. Which of the
following process involves chloroplast?
A. Conversion of light energy to chemical energy
B. Cell division
18. Which element has
Ca as its symbol?
A. Carbon B. Calcium
19. Which of the
following is a vitamin?
A. Niacin B. Pepsin
20. What is the term
form slowing-down response by the frog’s circulatory system during cold season?
A. Hibernation B. Estivation
21. Which element has
Te as its symbol?
A. Tellurium B. Technetium
22. Which of the
following is the lowest rank of coal and is otherwise called brown coal?
A. Lignite B. Anthracite
23. Of the following
organisms, which are included under Kingdom Plantae?
A. Magnolidae B. Prokaryotes
24. Which of the
following activities help reduce water pollution?
A. Treating wastewater before it is discharged
B. Cleaning of soap
instead of detergents
25. Why do people feel
their ears pop or crack when they are up in the air?
A. There are less air particles
B. There are more
air particles
26. Why does the level
of water in a beaker rise after a stone is placed in it?
A. The stone takes the place occupied by water
B. The stone has
more mass than the water
27. Why do leaves with
green color look green in the sunlight?
A. They absorb the
green light
B. They reflect green light
28. Which of the
following is true about light and seeing?
A.
Light rays coming from an object meets light
coming from a light source, and then enters the eyes
B.
Light hits an object, bounces
and then enters the eyes
29. Every morning when
the sun shines through the glass jalousies of Maria’s window, she sees a
rainbow on her wall. Which could explain this?
A. The glass jalousies break up the beam of sunlight into the colors
of the rainbow
B. There are water
droplets on the glass that act like a prism
30. Bagoong smells
because _______ .
A. Air and volatile
particles from bagoong mix and get spoiled further
B. Molecules from bagoong spread in air
31. Why do fisherfolks
catch more fish during the new moon than during the full moon?
A. Fishes are attracted to the light from the fishing boat which
fisherman makes use of during the new moon
B. Fishes go near
the surface during the new moon because the water is warmer
32. Which of these
effects generally occurs as a result of warm air mass and a cooler air mass
converging at earth’s surface?
A. Winds lie down
B. Stormy weather patterns develop
33. Geothermal energy,
an energy resource in the country, is based on which phenomenon?
A. There are more concentrations of heat in some places of earth’s
crust
B. Earth’s internal
energy heats its surface more than the sun does
34. Why is the
Philippines much hotter than Canada? The Philippines:
A. Has days with more
hours of light
B. Receives sun rays closer to vertical position
35. During periods of
increased global temperatures, which of the following is most likely to occur?
A. A decrease in
atmospheric CO2
B. An increase in atmospheric CO2
36. Which of the
following has the smallest mass when measured in an equal arm balance?
A. 1/8 sheet of pad paper
B. ½ sheet of pad
paper
37. Which of the
following is a proper example of natural selection?
A. A community of lady bugs begins having offspring with darker
shells, in order to hide from their predators
B. Seagulls begin to
eat so many fish so that only those with dark blue scale color survive
38. What is the main
difference between prokaryotes and the eukaryotes?
A. The eukaryote has
a nucleus, but the prokaryote does not have.
B. The prokaryote has a nucleus, but the eukaryote does not have
39. In computing data,
a student computes up to the second decimal place. As a researcher or scientist,
what trait(s) do(es) the student possess?
1. Accuracy
2. Critical
mindedness
3. Objectivity
4. Truthfulness
A. 1 and 4 B. 1 and 3
40. Which of the
following statements is true about parasites and their relationships with their
hosts?
A. The parasite enjoys the benefits of a relationship in which the
host is harmed or killed
B. The host enjoys
the benefits of a relationship in which the parasite is harmed or killed
41. Vascular tissue
that transports water in leaves connects directly to which of the following?
A. Xylem in the stem
B. Root hairs in the
epidermis
42. One immediate
cause of a decrease in the rate of photosynthesis is a reduction in the
availability of which of the following substance?
A. Oxygen B. Carbon dioxide
43. Which type of
digestion occurs in the mouth when an individual chews a piece of bread?
A. Mechanical digestion
only
B. Both mechanical and chemical digestion
44. John experienced a
lack of growth hormone (GH) as a child. Now that John is an adult, it is likely
that he:
A. Has normal adult body proportions, but an extremely short stature
B. Is of normal
height, but has child-like body proportions
45. The following are
effects of global warming, except:
A. Changes in the
aiming of seasonal patterns in ecosystem
B. Expansion of tropical diseases
46. An eclipse of the
sun throws the shadow of the ______ .
A. Moon on the earth
B. Moon on the sun
47. The correct way of
eating fruits is when eaten ______ .
A. With an empty stomach
B. After meals
48. Children born with
a deficiency of thyroxin ______ if deficiency is not checked.
A. Become mentally retarded
B. Have weak bones
49. Water covers 75%
of the Earth’s surface and yet some people still do not have enough water to drink.
Why?
1. Most of world’s
water is salty
2. Most of our
bodies of water are polluted by chemicals
3. Most freshwater
are frozen in ice caps
A. 1 and 2 only B. 1, 2 and 3
50. Why are nights
cooler when the sky is clear than when it is overcast?
A. Cooler air holds
less vapour
B. There is no cloud cover to prevent heat from escaping
51. The manager of
textile factory considers it too expensive to treat liquid wastes so he
suggested digging a hole near the factory where the wastes can be stored. Is
this environmentally safe?
A. No, the liquid wastes will mix to the groundwater.
B. No, the liquid
can be recycled.
52. Which among the
following gases is green in color?
A. Krypton B. Chlorine
53. What does a pH
below 7 indicate?
A. Acidity B. Alkalinity
54. Which of the
following best describes the amount of energy required to remove an electron
from a gaseous atom?
A. Ionization energy
B. Activation energy
55. Which among the
following has the most polar bond?
A. N2 B. HF
56. A molecule or an
ion is classified as a Lewis base if it has which of the following properties?
A. Accepts a proton from water
B. Donates a proton
to water
57. Which among the
following elements can be drawn into thin wires and hammered into thin sheets?
A. Cu B. Ag
58. Which of the
following is an example of a fungus?
A. Yeast B. Euglenoids
59. Alchemists in
ancient Egypt tested gold for purity by remelting it and heating it. If the
gold became whiter, it contained:
A. Lead B. Silver
60. Salts of which of
the following metals are added to fireworks to make them brilliant red?
A. Copper B. Strontium
61. What
intermolecular forces do geckos and other lizards use to stick to walls and
ceilings?
A. Static ionic
attractions
B. Van der Waals forces
62. If no more solute
can be dissolved in a solvent at a given temperature, then that solution is
called:
A. Saturated B. Saturable
63. A horizontal row
of elements on the Periodic Table is known as a(n):
A. Period or series
B. Group or family
64. According to the
modern periodic law, the chemical properties of the elements are periodic
functions of their _______ .
A. Atomic mass B. Atomic number
65. The amount of
substance having 6.02x1023 of any kind of chemical unit is called a(n):
A. Mass number B. Mole
66. Breaking up solid
speeds dissolving in a liquid by______ .
A. Raising the
temperature
B. Increasing surface area
67. Fats do not
dissolve in water because fats _______ .
A. Are nonpolar and water is polar
B. Are polar and
water is nonpolar
68. What is the
location on the Earth’s surface that is directly above the place where an
earthquake originates?
A. Epicenter B. Fault
69. If there are
several earthquakes in a row, what is the name of the largest of these
earthquakes
A. Main shock
B. Tertiary shock
70. What is the
partially molten layer of the Earth called?
A. Asthenosphere B. Lithosphere
71. What part of the
Earth is thought to be composed of iron and nickel?
A. Lithosphere B. Core
72. What is the
numerical value for the hardest mineral on the Mohs hardness scale?
A. 10 B. 20
73. Which among the
following properties is a measure of how easily a mineral can be scratched?
A. Luster B. Hardness
74. Rock fragments
thrown into the air during a volcanic eruption are called:
A. Lava B. Tephra
75. What is a
pyroclastic flow?
A. Poisonous gas of
a volcano
B. A mixture of volcanic gas, ash and other tephra
76. What type of
clouds produce thunderstorms
A. Cumulonimbus
B. Stratus
77. When the North
Pole is tilted towards the sun, it is summer and when the sun shines all the
time both day and night, what is this called?
A. Midnight sun
B. Northern light
78. A toothpick can
sit on the surface of water due to
A. Surface tension B. Buoyancy
79. Element X has an
electron configuration of 1S22S22P2. Based on information, element X belongs to
a/an ______ family.
A. Coinage
B. Halogen
80. An atom of silicon
has a mass number of 28 and an atomic number of 14. How many protons are in
this atom?
A. 28 B. 14
81. Which is true of
metalloids?
A. Have properties of both metals and non-metals
B. Conduct heat and
electricity less effectively than non-metals
82. The Kyoto
protocol, which requires countries to reduce greenhouse emission, is a practice
that advocates _____ .
A. Environmental protection
B. Ecological
destruction
83. You won the
jackpot prize in the lottery. The prize money cannot be paid in currency byt
only in gold. Applying your knowledge in chemistry, select the largest amount
of gold from the choices below. (Au = 197).
A. 40.0 kilograms of gold
B. 22.4 moles of
gold
84. Air, flood, and
water are essential elements in human existence. Carried by wind air called
_____ falls to earth poisoning fish and destroying vegetation.
A. Acid rain B. Greenhouse rain
85. Air, when mixed
with sulfur oxide coming from motor vehicles and industrial plants falls to
earth giving effects to living things. This polluted air is known as
A. Acid rain B. Greenhouse rain
86. Damage to DNA that
is not repaired and then replicated can result in genetic disorders. This
demonstrates .
A. Mutation B. Pathology
87. Because it will
adversely affect the populations’ food supplies, the most disadvantageous
source of energy is_______.
A. Geo-thermal B. Plants
88. Plants capture
energy from the sunlight by means of molecule known as
A. Adenosine
triphosphate
B. Chlorophyll
89. This demonstrates
the feeding connections between all life forms.
A. Nutrition cycle B. Food web
90. A species of fish
lived in a lake. When a dam was constructed in the area, a group of fish was
separated and populated a new pond. They then developed differing characteristics
and became a distinct species. Which of the following concepts explains this
speciation?
A. Geographical isolation
B. Behavioral
isolation
91. How are bats able
to navigate in the dark without bumping into anything?
A. They emit sound waves whose returning vibrations can detect the
presence of objects
B. They have
supersonic eyes
92. What organisms
would most likely be in an artic environment?
A. Walrus B. Turtle
93. Which of the
following are the components of fungal cell wall?
A. Cellulose, lipids,
and nucleic acids
B. Chitin, proteins, and sugar
94. Polysaccharides,
triglycerides, polypeptides, and nucleic acids are classified as
A. Acids and bases
B. Macromolecular
95. Sugar compounds
such as monosaccharides, disaccharides, and polysaccharides are also classified
A. Carbohydrates B. Proteins
96. Which of the
following is not an example of a naturally occurring sugar?
A. Glucose B. Mitose
97. Which of the
following is an example of a symbiotic relationship?
A. Wolves working
together to hunt in a pack
B. Weeds clinging to the roots of trees in your backyard
98. Which among the
following cell organelles does not participate in cellular division?
A. Cytoplasm B. Ribosomes
99. Fungi absorb the
nutrients from dead organisms. In an ecosystem what roles do they play?
A. Carnivore B. Saprophytes
100. Plants create their
own food by absorbing and processing sunlight. The ability to produce one’s own
food source is a metabolic process known as:
A. Autotrophy B. Homotrophy
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