1. Which of the following statements represents a physical
change?
A. The lawn grows thicker every day because fertilizers were
added into the soil.
B. Frozen mango juice melted when
left standing at room temperature for 30 minutes.
2. The result when there is lack of cohesion among gas
molecules.
A. Molecules are compressed into smaller volumes
B. Molecules move freely in all
directions
3. A change in the shape or size of an object can be
classified as:
A. Physical change B. Chemical change
4. Which of the following is a mixture?
A. Saltwater B. Carbon dioxide
5. Iron is what type of magnetic material?
A. Ferromagnetic B. Paramagnetic
6. What important metallic elements are found at the inner
core of the Earth?
A. Iron and silicon B. Iron and nickel
7. Why do we see the sun rise in the east?
A. The earth revolves eastward.
B. The earth rotates from west to
east.
8. Which of the following does not cause the different
seasons? A.
A. Tilting of the earth's axis B. Evolution
9. Which law of motion could explain what happens every time
we walk?
A. Law of Interaction
B. Law of Inertia
10. Which of the following is not a source of energy?
A. Nuclear geothermal heat
B. Inertia at rest
11. Apparently, the loss of weight of objects immersed in a
fluid is due to:
A. Buoyant force
B. Archimedes principle
12. Which hormone promotes the development of secondary male
sexual characteristics?
A. Gonads B. Testosterone
13. Which of the following parts of the circulatory system
distributes the digested fats such as fatty acids and glycerol throughout the
body?
A. Capillaries B. Lacteals
14. Considered as essential to human life as it gives us
framework and support to protect the viral organs and other structure of the
body:
A. Joints B. Bones
15. Which of the following is a thigh bone?
A. Humerus B. Femur
16. Which blood vessels carry blood back to the heart?
A. Veins B. Arteries
17. What do you call that wave-like contraction of the wall
of the esophagus which is responsible for pushing down the food to the stomach?
A. Peristalsis B. Cyclosis
18. Bile is produced by the:
A. Liver B. Gallbladder
19. Myopia is connected with:
A. Ears B. Eyes
20. Which structure closes the opening in the larynx while
we are swallowing?
A. Pharynx
B. Epiglottis
21. White blood cells, the skin and the antibodies are
similar because they:
A. Supply oxygen to the body
B. Protect the body against certain
harmful organisms
22. On an average how many litres of blood a human body
have?
A. 2-3 litres B. 5-6 litres
23. Blood types AB and 0 can safely be given to a person
with blood type:
A. A and B
B. AB and 0
24. Which-.of the following blood types is regarded as a
universal donor?
A. 0 B. AB
25. The liquid portion of the blood is the:
A. Plasma
B. Hemoglobin
26. Which system defends the body against infectious
diseases?
A. Lymphatic system
B. Immune system
27. What wave patterns of the EEG are active in an awake
person?
i. Alpha wave ii. Beta wave
iii. Delta wave iv.
Theta wave
A. I and II
B. I and IV
28. Which of the following sets the condition under survival
occurs?
A. Random change
B. The environment
29. The evolution of life forms on earth has been dependent
on:
A. The rate of change occurring in
different earth environments
B. The typical and chemical evolution of the earth
30. Which of the following is the correct sequence from the
oldest era to the latest?
A. Precambrian, Paleozoic, Mesozoic,
Cenozoic
B. Paleozoic, Cenozoic, Precambrian, Mesozoic
31. The origin of the modern man:
A. Tabon B. Sapiens
32. He evolved the Theory of Evolution in his book
"Origin of Species."
A. Archimedes B. Darwin
33. He coined the term "survival of the fittest."
A. Darwin B. Spencer
34. What is the technology being used now in the surgery of
the retina?
A. Laser
B. Optical ray
35. Generally, identical organisms are known as:
A. Variants
B. Clones
36. Which of the following base pairs are complimentary to
each other in a DNA molecule?
A. Cytosine and guanine
B. Thymine and cytosine
37. Damage to DNA that is not repaired and then replicated
can result in genetic disorders. This demonstrates:
A. Mutation B. Pathology
38. Who is the Father of Genetics?
A. Charles Darwin
B. Gregor Mendel
39. We have energy responsible for life on Earth. The source
of this energy is the:
A. Wind B. Sun
40. Which of the following nutrients is incorrectly paired
with its function in a plant?
A. Magnesium: constituent of chlorophyll
B. Iron: component of chlorophyll
41. Cell walls present in plant cells are made up of which
compound?
A. Lipids
B. Cellulose
42. What is the storage cell of plants?
A. Collenchyma
B. Parenchyma
43. A plant growing on a shady side of a tall fence bends
around the corner of the fence toward the sunlight. This illustrates;
A. Positive phototropism
B. Negative phototropism
44. In addition to ATP, what are the end products of glycolysis?
A. CO, and NADH B. NADH and pyruvate
45. Which part of the flower develops into the fruit?
A. Ovule B. Ovary
46. Plants need carbon dioxide, water, light and chlorophyll
in order to make starch by photosynthesis. Carbon dioxide enters plants through
holes in the leaves called;
A. Stomata B. Lenticels
47. Opening of cement plants requires getting a DENR
clearance. Which of these clearances are required?
A. Air Pollution Clearance
B. Environmental Clearance (ECC)
48. Which of has following group of gases contribute to the
'Green House Effect'?
A. Carbon tetrafluoride and Nitrous oxide
B. Carbon dioxide and Methane
49. Which of the following sentences about greenhouse effect
is INCORRECT?
A. Greenhouse gases trap heat in the atmosphere which are
returned to the earth's surface.
B. Greenhouse effect is due to gases
that absorb the green region of light from the sun.
50. Acid rain occurs when
A. Phosphorus-rich
water in lakes evaporates to form phosphoric acid.
B. Sulfur released in burning fossil fuels combines with water in the
atmosphere.
51. Global climate change is being attributed to the
atmospheric increase in what two gases produced by human activities?
A. Methane and Carbon dioxide
B. Nitrous oxide and Sulfur dioxide
52. Plants absorb dissolve nitrates from the soil and
convert them into
A. Urea B. Free nitrogen
53. It is a common observation that mushrooms thrive few
days after lightning strikes. Which among the following biogeochemical cycles
is involved in this process?
A. Nitrogen cycle B. Carbon-Oxygen cycle
54. The flow of water in our planet as it undergoes the
processes of evaporation, condensation, precipitation, infiltration, runoff and
subsurface flow is called:
A. Rain cycle B. Water cycle
55. According to the
level of organization, which is at the highest level?
A. Ecosystem B. Biosphere
56. The chemical process of getting energy from the food and
using it to maintain the structure and function.
A. Respiration B. Metabolism
57. The number of calories in a food indicates:
A. The amount of energy that can be
obtained from the food
B. The amount that can be digested from the food
58. Which of the following is a vitamin?
A. Niacin B. Pepsin
59. The four most essential element needed by the human
body:
A. Carbon, hydrogen, oxygen, phosphorous
B. Nitrogen, hydrogen, oxygen,
carbon
60. Sugar and starches are called:
A. Carbohydrates B. Minerals
61. Which of the following is an isomer of glucose?
A. Fructose B.
Maltose
62. Which of the
following is not a source of carbohydrate?
A. Sugar B. Meat
63. If carbohydrates are hydrophilic organic compounds,
lipids are organic compounds.
A. Hydrophobic B.
Polypeptide
64. At present, a patient fights cancer either through
surgery or by subjecting him/her to a drug treatment called:
A. Irradiation B. Chemotherapy
65. Which among the
following is the only method of contraception that has 100% success rate?
A. Withdrawal method B. Abstinence
66. Diploid cells have two copies of chromosomes. These two
copies are called:
A. Chromatids B. Homologous
67. Which of the following means development of egg without
fertilization?
A. Parthenogenesis B. Meiosis
68. Which of the following does not contribute to the
variation in population?
A. Mitosis B. Crossing over
69. Which among the following are duplicated during the
process of mitosis?
A. Centrosomes B. Chromosomes
70. The part of a plant cell that stores water, sugar and
minerals
A. Vacuoles B. Chloroplasts
71. The molecules that contain an organism's genetic make-up
called:
A. Nucleic acid B. Genetic membrane
72. Which group of organisms cause "red tide?"
A. Algae
B. Dinoflagellates
73. Butterflies and mosquitoes have mouthparts in the form
of a long, narrow, coiled tubed called:
A. Mandibles B. Proboscis
74. Birds have shapes that influenced the building of
aircrafts. What feature is most present in airplanes?
A. The presence of hollow oblong body
B. The presence of wings
75. What type of body covering makes up a mammal?
A. Shell
B. Fur
76. Bamboo is classified as:
A. Bush B. Grass B
77. Animals which live on land but return to the water to
breed:
A. Reptiles B. Amphibians
78. Which of the organisms is cold-blooded with a dry scaly
skin?
A. Frog B. Lizard
79. An owl and a hawk both eat mice. Which of the following
of these terms describes the relationship between a hawk and an owl?
A. Mutualism B. Competition
80. What relationship exists between frogs and fishes in a
pond ecosystem?
A. Predation
B. Competition
81. Which of the following statements is TRUE about
parasites and their relationships with their host?
A. The host enjoys the benefits of a relationship in which
the parasite is harmed or killed.
B. The parasites enjoy the benefits
of a relationship in which the host is harmed or killed.
82. Living and feeding on leaves by the caterpillar is an
example of:
A. Parasitic
B. Predatory
83. Commensalism is when:
A. Neither species affects the other
B. One species benefits while the
other is unaffected
84. Which of the following is not used in the manufacture of
food by green plants?
A. Carbon dioxide B. Oxygen
85. Organisms that can manufacture their own food are called:
A. Autotrophs B.
Heterotrophs
86. Which of this is not a multicellular organism?
A. Human B. Amoeba
87. Which of the following does not exist in carbohydrates?
A. Hydrogen
B. Nitrogen
88. What functional group differentiates chitin from
cellulose?
A. Carboxyl group
B. Amino group
89. Plant cells differ from animal cells in that only plant
cells possess:
A. Lysosomes B. A cell wall
90. Arthropods exhibit fast and coordinated movement because
they possess:
A. An endoskeleton B. Jointed appendages
91. At night plants conserve and restrict intake.
A. Water oxygen B. Water; carbon dioxide
92. What do you call the consumers that directly feed on
producers and get the greater amount of energy?
A. Omnivores B. Herbivores
93. In the energy pyramid, which organisms occupy the base?
A. Herbivores B. Producers
94. What do you call the organisms who only eats plants and
algae?
A. Herbivore B. Omnivore
95. Which of the following does not have eukaryocytes?
A. Bacteria B. Fungi
96. Which of the following is not a type of cell?
A. Sperm B. Virus
97._________ is to insects as toxicology is to ___________
A. Etymology : toxicity B. Entomology : poisons
98. Which of the
following best describes the science of Ecology?
A. Living things
B. Life and environment
99. Branch of
Science that deals with the study of the relationship between plants, animals
and other living things found in their habitats.
A. Ecosystem B. Ecology
100. One who specializes in all kinds of fishes and their
characteristics developing expertise in:
A. Ichthyology
B. Entomology
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