BIOLOGICAL BIOLOGICAL SCIENCE
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FIELD OF SPECIALIZATION - 150 items (MAJOR IN: BIOLOGICAL SCIENCE) INSTRUCTIONS: 1. Get your brown envelope from your Room Watchers. 2. Check if the name printed on the brown envelope and the contents inside are yours. 3. Detach the remaining answer sheet from the bottom of your Examinee ID/AS Set. 4. Write the subject title/or field of specialization on the box provided, 5. Shade Set Box "A" on your answer sheet if your test booklet is Set A; Set Box "B" if your test booklet is Set B. 6. Avoid erasures. MULTIPLE CHOICE 1. Which of the following is a part of the process of chemiosmosis? A. Electrons move along along the electron, transport chain. B. Water molecules are split. C. Hydrogen ions pass through membranes. D. Light is absorbed by chlorophyll. 2. During mitosis, a double-stranded chromosome is attached to a spindle fiber at the ________. A. cell plate B. centromere
C. centrosome D. centriole
3. Which is the effect of drugs on cells? A. Produce toxic substance substance B. Discontinuous cell activity C. Cause damage to their structure D. Poison the cell liquid 4. The cell wall of plant cell is made of A. lipids B. cellulose
C. protein D. cell membrane
5. Which is the storage cell of plants? A. Microtubule B. Collenchyma
C. Meristem D. Parenchyma
BIOLOGICAL SCIENCE
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6. Which results from drinking saltwater? A. Poisoning of the cells B. Dehydration of the cells C. Increase in cell pressure D. Bursting of the cells 7. What kind of tissue lines our skin and what is its important f unction? A. Nerve tissue; responsible for reflexes. B. Epithelial, protection from ultraviolet radiation. C. Nerve tissue; receive stimuli on the skin. D. Epithelial; produce new cells when peeled off. 8. At metaphase of the fu at meiotic division, the chromosomes are attached to the spindle fibers as________ A. double chromatids B. non-homologous pairs C. single chromatid strands D. a tetrad of four chromatids 9. Which type of cell would probably provide the best opportunity to study lysosomes? A. Leaf cell of a plant: B. Nerve cell C. Muscle cell D. Phagocytes white blood cells 10. Which best describes meiosis as another f orm of cell division with accompanying nuclear changes? A. The nuclear changes follow one another indefinitely. B. Each new cell has double the amount from both parents. C. The nucleoli break up into two parts and disappear. D. Each new cell has half the number of chromosomes. 11. How are mitochondria and chloroplasts similar to bacteria? A. They are larger than normal cells. B. They are bounded in single membrane. C. They lack ribosomes D. They have a limited amount of genetic material. 12. Which is the energy storage compound used to do all forms of work of the cell? A. Electron B. Adenine C. Nicotinamide D. Adenosine triphosphate
BIOLOGICAL SCIENCE 13. Chromosomes do not normally occur in pairs in _____________ A. earthworm B. somotic cells
C. fertilized eggs D. gametes
14: The bipolar nature of the cell membrane is due to _________ A. presence of carriers B. presence of glycolipids
C. phosphofipids biiayer D. integral proteins
15. When a red blood cell is placed in distilled water, it __________ A: plasmolyses B. remains the same 16. The "eyes" of potato are actually. A. internodes B. nodes
C. shrinks D. swells
C. leaf scars and buds D. stem
17. Which of these is a NOT vegetable fruit? A. Cucumber C. Squash B. Ampalaya D. Carrot 18. Which plant has underground stem modified for reproduction? A. Ginger B. Camote
C. Tubers D. Strawberry
19. Which plants formed the vast coal beds during the carboniferous period? A. lycopods B. Conifers
C. Angiosperms D. Gymnosperns
20. What kind of relationship is exhibited by A. Commensalism B. Parasitism
C. Symbiosis D. Competition
21. Chlorophyll appears green because the A. dispersed B. absorbed
an algae and a fungi in a lichen?
green portion of light is _______
C. refracted D. reflected
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BIOLOGICAL SCIENCE
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22. The end products of the dark-reaction phase of photosynthesis are ADP and ___________ A. carbon dioxide B. sugar
C. carbon D. starch
23. What gas is needed by the seed during germination? A. Nitrogen B. Carbon dioxide
C. Hydrogen D. Oxygen
24. Which is the universal energy source of the cell of all living things? A. Carbon B. ATP
C. Glucose D. PGAL
25. When the staminate flower is found in one plant and the pistillate flower on another the plants is described as ________. A. complete B. monoecious
C. robust D. dioecious
26. Which pigment is dominant in red algae? A. Phycocyanin B. Fucoxanthin
C. Chlorophyll D. Phycoerythrin
27. Which process during photosynthesis involves the addition of hydrogen? A. Oxidation B. Hydration
C. Carbonation D. Reduction
28. The dark reaction phase of photosynthesis consists of a series of chemical reactions which end up with the formation of a 3-carbon sugar called _______ __. A. ADP B. NADPH
C. ATP D. PGAL
29. Which structure regulates the opening and closing of the stomata? A. Accessory cells B. Epidermal cells
C. Tracheary cells D. Guard cells
30. Spraying some plants with a combination of auxin and gibbrellins will _______ A. B. C. D.
promote ripening of fruits promote fruit formation preventing senescence enlargers fruit growth
BIOLOGICAL SCIENCE
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31. All flowering plants belong to class ________. A. conifers B. angiospermae
C. felicinae D. gymnospermae
32. Fruit growers often other propagate their plants by sexual means because the resulting offspring will __________ A. B. C. D.
be an improved variety than the parent shoe little variation from the parent bear larger fruit than the parent show no environmental variation
33. Which of the following nutrients is incorrectly paired with its function in a plant? A. B. C. D.
Magnesium – constituent of chlorophyll Iron – component of chlorophyll Phosphorous – components of nucleic acid Calcium – formation of cells walls
34. What process is responsible for the upward movement of water in very tall trees? A. Transpiration B. Capillary action
C. Turgor pressure D. Air pressure
35. Which popular plant is described as carnivorous? A. Water hyacinth B. Cactus
C. Pitcher plant D. Kataka-taka
36. The shape of the mango tree is different from that of the pine treeders to a type of branching which describes as ________. A. tubular B. columnar
C. deliquescent D. excurrent
37. What do you call the male gametophyte of an angiosperm? A. Ovule B. Embryo sac
C. Anther D. Pollen grain
38. Which roots system is best adapted for anchorage? A. Secondary B. Tertiary
C. Taproot D. Fibrous
BIOLOGICAL SCIENCE
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39. Egg-laying mammals are called ___________. A. viviparous B. primates
C. oviparous D. marsupials
40. To what order do primitive mammals that lay eggs belong? A. Marsupials B. Craniata
C. Monotremata D. Placental mammals
41. Large colonies of polyps belonging to class Anthrozoa secrete hard skeletons of lime which later form A. sea anemones B. obellas
C. carais D. jellyfish
42. When body parts are paired on either side of the body; this type of symmetry is called_______. A. dorso-ventral B. bilateral
C. radial D. dorsal
43. What substance do leeches secrets which keeps blood the feed on state? A. Hemoglobin B. Ecdysine
C. Anticoagulin D. Fibrinogen
44. One who specializes in all kinds of fishes and their characteristics, developing expertise in___________. A. taxonomy B. histology
C. entoology D. ichthyology
45. In protozoans, digestion occurs in the______. A. Stomach C. Contractile vacuole
C. Ribosome D. Food vacuole
46. What is a distinguishing characteristics of HOMO SAPIENS over the lower mammals? A. Blood vessels B. Sensitive skin
C. Large brain D. Endoskeleton
47. What kind of adaptation enables the walking stick to elude its enemies? A. Aggressive mimicry B. Aggressive adaptation
C. Protective mimicry D. Protective coloration
BIOLOGICAL SCIENCE
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48. Which stages of incomplete metamorphism are undergone by the grasshopper? A. Nymph, pupa, adult B. Egg, larva, pupa, adult
C. Egg, nymph, adult D. Egg, pupa, adult
49. Which are the two hosts of ascaris? A. Cow and man B. Man and dog
C. Cow and pig D. Man and pig
50. Two organisms can be identified as belonging to same species if they can__________ A. B. C. D.
eat the same kind of food breed in a natural setting tolerate one another in nature survive together in nature
51. Anthropods exhibit fast and coordinated movement because they possess___________ A. an endoskeleton B. jointed appendages
C. exoskeleton D. bilateral symmetry
52. The toxic substance secreted by bees and ants through their sting originate from their____________. A. silk glands B. intestines
C. rectal glands D. salivary glands
53. The relationship that exist between insects and flowering plants is called____________. A. parasitism B. predation
C. symbiosis D. commensalisms
54. Which of the following causes our nose to “run” when we cry? A. B. C. D.
the lungs release water vapor Mucous glands are activated Tears enter the duct to the nasal cavity The sinuses releases water
55. What is the main function of the peripheral nervous system? A. B. C. D.
Communicates with the endocrine glands Regulates our heartbeat and breathing Control our emotions and intelligence Connects central nervous system to all organs
BIOLOGICAL SCIENCE
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56. Which cause our bones to turn brittle and easily break? A. B. C. D.
Turning into muscle tissue Increase in flexibility Turbidity decreased Removal of collagen
57. Which part of neuron conducts impulse other cells toward the cell body? A. Axon B. Ganglia
C. Synapse D. Dendrite
58. The tendency to react automatically to an external stimulus is called a/an______________. A. Habit B. Instinct
C. Impulse D. Reflex
59. Which hormone promotes the development of secondary female sexual characteristics such as broad pelvis and enlarged breasts? A. Testosterone B. Estrogen
C. Secretion D. Relaxin
60. Which part of the ear is dangerously affected when sound is a hundred decibels? A. Stirrup B. Eustachian tube
C. Semi-circular canal D. Tympanis membrane
61. What disorder is caused by a high concentration of calcium in the blood? A. Thyroid glands B. Pancreas
C. Parathyroid glands D. Liver
62. People who live in high altitude have blood that is described to have A. B. C. D.
high number of white blood cells low number of red blood cells same number of red blood cells high number of red blood cells
63. Creativity is a desirable trait that should be developed among our students. Describe a creative person? A. B. C. D.
Creates beautiful set-ups. Imitates scientists at work. Originates own procedures. Announces same solutions.
BIOLOGICAL SCIENCE
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64. If the flow of blood in a vessel is toward the heart then the vessel is identified as a_____________. A. ventricle B. artery
C. vein D. atrium
65. The funnel-shaped opening through which the egg cell is released is the? A. umbilical chord B. uterus
C. fallopian tube D. tubules
66. Which one is insufficient in cretinism? A. Insulin B. Adrenalin
C. Parathromone D. Thyroxine
67. When you fail to eat the usual kind and amount of food you take everyday, what could serve as the fuel source of the cells in your body? A. B. C. D.
Fats in adipose tissue Cholesterol in blood vessels Albumin in the blood Glycogen in the liver
68. What instrument has a flexible gastroscope that is used to examine the esophagus and stomach? A. Ultrasound B. Laser
C. Endoscope D. Scanner
69. Where does exchange of materials between the blood and other body tissues take place? A. Platelets B. Veins
C. Arteries D. Capillaries
70. What explains why our lips are “redder” than our palm? A. B. C. D.
Many blood vessels are located around the lips. Lip epidermis is thinner. Lips are heavily keratinized. There is increased blood flow in the lips.
71. Which part of the breathing occurs when the diaphragm muscles are pulled downwards, thus increasing the chest cavity? A. Expiration B. Release of energy
C. Release of gases D. Inspiration
BIOLOGICAL SCIENCE
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72. What experiment which is the condition being introduced and whose effect is being observed? A. Hypothesis formulated B. Constant variable
C. Manipulated variables D. Tentative variable
73. Which of the following pancreatic fluids is responsible for the breakdown of fat? A. Chymotrypsin B. Amplase
C. Trypsin D. Lipase
74. Which part of the brain controls our rate of breathing? A. Cerebellum B. Cerebrum
C. Spinal cord D. Medulla
75. Through what part does the embryo obtain its nourishment from the mother? A. The oviduct B. The umbilical cord
C. The food tubules D. The fallopian tube
76. What organ is controlled by the automatic nervous system? A. Brain B. Bones
C. Heart D. Skeletal muscles
77. What is the main function of the large intestines? A. B. C. D.
Excrete bile pigments from ducts Excrete salts and indigested food Digest food into liquid form Complete the digestion of proteins
78. What do you call food in a semi-liquid form, partially digested and mixed with hydrochloric acid? A. Gastric secretion B. Gastric fluid
C. Mucosa D. Chyme
79. Which would you advise to children prevent osteoporosis? A. B. C. D.
Consistent bone density test Adequate calcium and vitamin D More intake of all vitamins Less bone exercise and fatigue
BIOLOGICAL SCIENCE
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80. Which is considered the master gland due to its influence on the activity of all the other glands? A. Thyroid B. Adrenal
C. Pituitary D. Parathyroid
81. What enzyme is secreted by the pancreas which splits starch into sugar? A. Pepsin B. Erepsin
C. Lipase D. Amylase
82. What do we get from carbohydrates and fats? A. Cell builders B. Tissue builders
C. Heat and energy D. Growth regulators
83. What secretes which enables the sugar to be stored in the liver? A. Adrenal medulla B. Thyroid
C. Adrenal cortex D. Islet of langerhans
84. What sar protects the heart? A. Septum B. Atrium
C. Pericardium D. Valve
85. What BEST describes respiration? A. B. C. D.
Taking in carbon dioxide and releasing oxygen. Breathing in a mixture of different gas. Breathing in and breathing out. Taking in oxygen and releasing carbon dioxide.
86. Which type of muscle tissue found in the walls of our stomach is responsible for the process of peristalsis? A. Voluntary B. Striated
C. Cardiac D. Smooth
87. Which of the hormone that triggers ovulation? A. Testosterone B. Prolactin
C. Follicle-stimulating D. Leutinizing
88. What do we call a prediction that is made based on two observations? A. Inference B. Interpolation
C. Extrapolation D. Hypothesis
BIOLOGICAL SCIENCE
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89. How does the liver assist the digestive system? A. B. C. D.
Stores starch It secretes bile Acts on protein food Mixes with the pancreatic juice
90. What structure in the tongue makes it distinguished food quality? A. Tasters B. Taste buds
C. Taste epithelium D. Nerves
91. Which protein found I the plasma is responsible for blood clotting? A. Albumin B. Globulin
C. Serum D. Fibrinogen
92. White blood cells are the “soldiers” of the body. They fight the disease-causing organisms. They are the _________. A. antibodies B. phagocytes
C. antigens D. erythrocytes
93. What blood test is used to provide information about agglutination reactions between donor and recipient blood? A. Blood count B. Clotting test
C. Blood chemistry D. Type and cross-match
94. Which produce the hormone MOST closely associated with the control of calcium metabolism? A. Pancreas B. Ovaries
C. Adrenal glands D. Parathyroid glands
95. What is the function of the lymph? A. B. C. D.
Contains fibrinogen Protects the body from infection Transports oxygen Enables the blood to clot
96. Which part of the brain is responsible for intelligence, memory, and learned behavior? A. Cerebellium B. Cerebrum
C. Medulla D. Thalamus
BIOLOGICAL SCIENCE
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97. What is the major problem involved in organ transplant? A. B. C. D.
Race of recipient Phagocytes Sex of donor Antigen-antibody reaction
98. What special equipment is placed inside the heart generate electrical impulse? A. Endoscope B. Pacemaker
C. Cardiac regulator D. Heart pump
99. The modern horse has fewer toes than its ancestors. Such change is governed by ______. A. Reduction-division B. Natural selection
C. Chromosomal deletions D. Use and disuse
100. Which theory on how life began do chemists and geologist agree on today? A. Special creation B. Spontaneous generation
C. Cosmozoic D. Naturalistic
101. At the completion of mitosis, the remainder of the cell divides and a new cell wall is formed. This process is called __________. A. Meiosis B. Cytokinesis
C. Recombination D. Cross-over
102. The age of mammals was traced to about ________. A. 5-6 billion years B. 65 million years
C. 230 million years D. 600 million years
103. If a trait is controlled by a gene that is located in the x chromosome. It is classified as A. genotype B. gene-liked
C. sex-linked D. phenotype
104. Which theory states that life originated from non-living materials? A. Naturalistic B. Cosmozoic
C. Spontaneous generation D. Special creation
105. The age of fossils can be determined by ______________. A. B. C. D.
The age of sediments where found Carbon-14 dating method When the organisms came about Te nature of radiations emitted
BIOLOGICAL SCIENCE
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106. Which parental pair could produce a colorblind female? A. B. C. D.
Heterozygous normal vision mother and normal father. Heterozygous normal vision mother and colorblind father. Normal vision mother and colorblind father. Homozygous normal vision mother and normal father.
107. An organism that has an extra copy of a chromosome in all its cell is a result of ________ A. Gene mutation B. Chromosomal mutation
C. somatic mutation D. polyploidy
108. Which of the following is a cloned organism? A. B. C. D.
Rat with rabbit hemoglobin genes. Human gene with a blood clotting gene. Bacterium that has received genes by conjugation. Fern grown in cell culture from a single root cell.
109. Which is the plasmid that increases resistance to antibiotics? A. Col-plasmid B. F-plasmid
C. Cell-plasmid D. R-plasmid
110. Two cells which have chromosome number different from that of their single parent cell are normally produced during the process of ___________ A. Mitosis B. Meiosis
C. fusion D. cleavage
111. The major job of genes is to control __________. A. meiosis B. mitosis
C. protein synthesis D. cell membranes
112. In mammalian cloning, the organism resulting from the technology is similar to the _____ A. B. C. D.
owner of the embryonic cell surrogate embryonic cell owner of the somatic cell surrogate mother cell
113. Cells are allowed to fuse by __________. A. RNA polymerase B. Helicases
C. polyethylene glycol D. DNA ligase
BIOLOGICAL SCIENCE
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114. Why is incineration not favored as a method of waste disposal? A. B. C. D.
Needs more than power to exert Releases corrosive and noxious gases Requires large energy expenditure Expensive for a country like ours
115. A food web is a network of interacting A. producers B. food chain
C. consumers D. habiatats
116. Which of the following is NOT a greenhouse gas? A. CO2 B. NO2
C. H2S D. CH4
117. What is the current size of the human population? A. 4 billion B. 3 billion
C. 6 billion D. 5 billion
118. What is the natural phenomenon on wherein there is a continuous movement of water from the source to the atmosphere and back? A. Hydrogen cycle B. Carbon cycle
C. Mineral cycle D. Hydrologic cycle
119. Which is a part of the formation of fossils fuels force? A. Hydrologic cycle B. Carbon cycle 120. When does a temperature inversion occur? A. B. C. D.
Warm air rises above cool air. Warm fail to blow faster. Warm air is trapped under cool air. Cool air is trapped under warm air.
121. Which is the correct food chain? A. B. C. D.
Ants rice plant cat Corn plant mice cat Mice cat corn plant Rice plant ants corn plant
C. Phosphorous cycle D. Nitrogen cycle
BIOLOGICAL SCIENCE 122. Why is it difficult to dispose off high-level nuclear wastes? A. B. C. D.
They have long half-lives. They are large and bulky They emit radiation They have short half-lives
123. What is the benefit obtained from greenhouse effect? A. B. C. D.
Speeds the growth of plants Serves as a thermal blanket Allows release of heat energy Serves as a source of light energy
124. What is the process of removing salt from seawater? A. Detoxification B. Water treatment
C. Purification D. Desalination
125. Pollution has become a major problem largely because of the A. B. C. D.
Use of renewable resources Dependence on fossil fuels Abundance of natural resources Decrease in energy resources
l26. Which statement BEST describes the climax stage of an ecological succession? A. Will change from season to season B. Populated only by plants C. Persists until there are drastic changes D. Represents initial stage of evolution 127. The burning of coal could be made less polluting by using a _______? A. offshore drilling B. motor vehicle device
C. scrubber system D. recycling
128. Yeasts convert sugar into alcohol through the process of A. biomass B. fermentation
C. electrolysis D. combustion
129. What BEST characterizes the latitude where most deserts are found? A. Dry air is rising B. Dry air is descending. C. Air masses are stationary. D. Moist air is descending.
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BIOLOGICAL SCIENCE
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130. What kind of relationship exists when one organism kills and eats another organism? A. Commensalism B. Parasitism
C. Scavenging D. Predation
131. Which biome is considered to be the most stable? A. Grassland B. Taiga
C. Tundra D. Tropical rainforest
132. Ozone depletion is due to the release of CF's from A. industrial combustion B. deforestation
C. Styrofoam and freon D. animal respiration
133. Which pair of terms will most likely apply to the same organism? A. Autotroph, parasite B. Heterotroph, autotroph
C. Heterotroph, herbivore D. Producer, predator
134. The maximum rate at which .a certain species reproduces is its A. limiting factors B. carrying capacity
C. growth rate D. biotic potential
135. A species’ role in a particular ecosystem? A. community B. habitat
C. niche D. population
136. Which of these is a natural ecosystem? A. Aquarium B. Forest
C. Pond D. Pot with plants
137. What do you call the phase when population size is doubling at a ver y fast rate? A. Death B. Stationary
C. Lag D. Log .
138. Which one is a liquid fossil fuel? A. Petrochemical B. Methane
C. Petroleum D. Alcohol
BIOLOGICAL SCIENCE
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139. Why do foams produced from detergents remain in the water for among time because ? A. they are deficient in oxygen B. they are biodegradable C. they are rich in phosphorus D. they are non-biodegradable 140. Which of the following has the lowest heating value? A. Petroleum B. Wood
C. Coal D. Natural gas
141. Which of the following is referred to as the final community that lasts for a very long time? A. Niche B. initial
C. Climax D. Perennial
142. Which BEST describes the climax stage of an ecological succession? A. it changes rapidly from season to season. B. Represent initial phases of evolution. C. it persists until drastic changes occur. D. Populated only by plants. 143. What type of growth curve is produced from a very abrupt increase in population size? A. Quadratic B. Linear
C. Exponential D. Logistic
144. The transporting of broken rock particles from one place to another is a natural process called _______ A. depletion B. conservation
C. weathering D. erosion
145. Among the following, which could be considered a population? A. 8 coconut trees lining the fence B. 10 rats in 2m x 3m cage one summer C. 100 rats in a t hectare rice field D. 40 students eating in the canteen 146. An autotrophic nutritional relationship among or ganisms in an ecosystem is shown in the conversion of__________ A. protein into amino acids B. radiant energy to chemical energy C. free nitrogen into nitrites D. rocks into soil
BIOLOGICAL SCIENCE
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147. What is the most common waste disposal method in Metro Manila? A. Composting B. Open dump
C. incineration D. Sanitary landfill
148. In a food web, where is the greatest concentration of chemical bond energy? A. Decomposers B. Primary consumers
C. Producers D. Secondary consumers
149. In which of region of the atmosphere is the concentration of water vapor greatest? A. Ionosphere B. Troposphere
C. Stratosphere. D. Exosphere
150. Of all biomes, which is the most fragile? A. Tundra B. Estuary
C. Deciduous forest D. Taiga
END OF EXAMINATION
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