1. It is a concentrated form of energy that can be found in living organism.
a. Carbohydrates
b. Fats
c. Proteins
d. Nucleic acid
2. It is the enzyme that unwinds DNA
molecule during replication.
a. Helicase
b. RNA Polymerase I
c. DNA ligase
d. Primase
3. A weather disturbance in the western
part of the Atlantic Ocean.
a. Typhoon
b. Cyclone
c. Blizzard
d. Hurricane
4. Which of the following is an example of
artificial propagation?
a. Grafting
b. Pollen germination
c. External fertilization
d. Embryonic development
5. In the Central Dogma, the synthesis of
mRNA based on a DNA template thru base pairing is known as _______.
a. Replication
b. Transcription
c. Protein synthesis
d. Translation
6. It is the site of electron transport
chain (ETC).
a. Matrix
b. Cristae
c. Outer mitochondrial membrane
d. Cytoplasm
7. Which of the following differentiates
aerobic respiration from fermentation?
a. The process uses up ATP
b. Glucose is used as a substrate
c. Substrate- level phosphorylation
produces ATP
d. NADH goes through the electron transport chain
8. Which of the following classes belongs
to the Division Angiospermophyta?
a. Magnoliopsida
b. Pinophyta
c. Gnetophyta
d. Cycadophyta
e. Ginkgophyta
9. It refers to the evolutionary
relationships and sequences of group of organisms.
a. Speciation
b. Recombination
c. Phylogenetic
d. Genetic variation
10. He is a zoologist who contributed to
the development of Cell Theory.
a. Rudolf Virchow
b. Theodor Schwann
c. Matthias Schleiden
d. Louis Pasteur
11. Under optimum conditions, how many
ATPs per glucose molecule are produced in aerobic respiration?
a. 2 ATP
b. 4 ATP
c. 32-34 ATP
d. 36-38 ATP
12. During Krebs Cycle, how many ATP are
being produced?
a. 2 ATP
b. 4-6 ATP
c. 18 ATP
d. 24 ATP
13. The final acceptor of hydrogen in
cellular respiration is ________.
a. Oxygen, thus producing water
b. Pyruvic acid, thus forming lactic acid
c. Acetaldehyde, thus producing ethanol
d. All of the above
14. Which metabolic pathway occurs both in
fermentation and aerobic respiration?
a. Glycolysis
b. Krebs Cycle
c. Electron Transport Chain
d. Acetyl coenzyme A formation
15. Which of the following statement
differentiates dicot from a monocot?
a. Dicot has a fibrous root system while
monocot has tap root system.
b. Dicot has a circular arrangement of vascular tissues while monocot
has a scattered arrangement.
c. Dicot has a parallel veins while
monocot has a netted or reticulate veins.
d. Dicot consists of a multiple of 3
floral arrangement while monocot has 4 or 5.
16. It serves as the standard of a
comparison where no treatment was conducted.
a. Dependent variable
b. Independent variable
c. Control variable
d. Control group
17. What is the general shape of Vibrio
cholera bacteria?
a. Coccus
b. Bacillus
c. Spiral
d. Colony
18. Steppes- Asia : _______-South America
a. Havannas
b. Savannas
c. Prairies
d. Pampas
19. These are areas where freshwater merge
with the ocean.
a. Rivers
b. Streams
c. Estuaries
d. Wetlands
20. Coral reefs are made up of ______.
a. Calcium carbonate
b. Calcium bicarbonate
c. Calcium phosphate
d. Calcium silicate
21. It describes the role and space that
an organism occupies in a certain ecosystem.
a. Niche
b. Habitat
c. Symbiosis
d. Predation
22. It is a stage of death where the dead
body becomes pale due to lack of blood circulation.
a. Pallor mortis
b. Algor mortis
c. Rigor mortis
d. Livor mortis
23. Which of the following genetic
disorders is an X-linked recessive?
a. Hemophilia A
b. Vitamin D- resistant rickets
c. Sickle cell anemia
d. Marfan syndrome
24. Which of the following genetic
disorders is a result of trisomy 21?
a. Turner syndrome
b. Triple X syndrome
c. Down syndrome
d. Klinefelter’s syndrome
25. It refers to an evolutionary pattern
wherein a body part of different organisms have the same origin and structure
but differs in function.
a. Homologous structures
b. Analogous structures
c. Vestigial structures
d. Complementary structures
26. Which of the following organism is
classified as monocot?
a. Bamboo
b. Carrot
c. Radish
d. Turnips
27. It connects muscles to bone.
a. Cartilage
b. Ligament
c. Tendon
d. Fibrous
28. Rhodophyta is also known as _______.
a. Green algae
b. Red algae
c. Brown algae
d. Golden algae
29. What is the complementary strand of
DNA with a base sequence of GAC TTC?
a. CAG CTT
b. CTG UUG
c. TCA GGA
d. CTG AAG
30. It is where photosynthesis occurs.
a. Sclerenchyma
b. Collenchyma
c. Parenchyma
d. Meristem
31. A hypothesis becomes a theory if it is
_____.
a. An improvement over a previous finding
b. A result of useful invention
c. Supported by repeated evidence
d. Tested in an experiment
32. Which of the following levels of
biological organization is in a decreasing order of complexity?
a. Organism -> population -> biotic
community -> ecosystem -> biosphere
b. Biosphere -> ecosystem ->
population -> biotic community -> organism
c. Organism -> biotic community ->
ecosystem -> population -> biosphere
d. Biosphere -> ecosystem -> biotic community -> population
-> organism
33. According to this theory of evolution,
“species evolve because the traits developed by organisms during their lifetime
are passed to their offspring.”
a. Theory of Natural Selection
b. Theory of Acquired Traits
c. Survival of the Fittest
d. Theory of Superimposition
34. What is the probability that a
colorblind female will have a colorblind son?
a. 1
b. ½
c. ¼
d. ¾
35. Which structure mainly function in
intracellular transport?
a. Lysosome
b. Vacuole
c. Endoplasmic reticulum
d. Golgi bodies
36. Which of the following is the generic
name for Vitamin B3?
a. Thiamine
b. Riboflavin
c. Niacin
d. Pyridoxine
37. How many ATP molecules are produced
via oxidative phosphorylation when 1 mole of glucose is degraded into carbon
dioxide and water?
a. 2
b. 4
c. 24
d. 34
38. Which of the following is NOT a
product of the light-dependent reaction?
a. ATP
b. Oxygen
c. NADPH
d. Sugar
39. Mendel’s law apply to every statement
below except:
a. Many traits are determined by a pair of
heredity units
b. Each formed gamete receives one of the
paired alleles
c. There is random sorting of alleles into
ova and sperm
d. Alleles at loci on the same chromosome may segregate together.
40. The chromosome mutation that occurs
when a piece of one chromosome breaks off and joins to a nonhomologous
chromosome is known as _____.
a. Deletion
b. Duplication
c. Translocation
d. Nondisjunction
41. A teacher will show the different
integuments of animals to his students. Which will be the best visual aid?
a. Microtechniques
b. Herbarium
c. Taxidermy
d. Aquarium
42. What causes red tide?
a. Dinoflagellate
b. Green algae
c. Brown algae
d. Diatom
43. In a normal breathing process,
inhalation happens when,
a. The diaphragm contracts and goes down as the ribcage goes upward and
outward.
b. The diaphragm contracts and goes up as
the rib cage goes downward and inward.
c. The diaphragm contracts and goes down
as the rib cage goes downward and inward.
d. The diaphragm contracts and goes up as
the rib cage goes upward and outward.
44. Osteoporosis can be prevented by
______.
a. Intake of calcium supplements
b. Proper diet
c. Regular exercise
d. All of the above
45. The blood vessels which carry
deoxygenated blood coming from the pulmonary trunk to the pulmonary circulation
are the ______.
a. Carotid arteries
b. Pulmonary arteries
c. Capillaries
d. Pulmonary veins
46. A 25-year old pregnant women is on her
last month of pregnancy and has been experiencing uterine contractions every 20
minutes. The hormone responsible for having this contractions is called:
a. Prolactin
b. Cortisol
c. Vasopressin
d. Oxytocin
47. The technology that uses plants to
breakdown or concentrate toxic wastes in the soil is called:
a. Bioaccumulation
b. Bioremediation
c. Genetic engineering
d. Phytoremediation
48. All of the following themes in biology
except:
a. Evolution
b. Molecular inheritance
c. Integumentary system
d. Cellular organization
49. The breathing organs found in leaves
are called stomata. The size of the stomata is regulated by the guard cells.
Which condition of the guard cells can favor the opening of the stomata?
a. Cells become turgid due to the entrance of K+ ions followed by the
osmotic entry of water.
b. Exit of water by passive transport
c. Increased CO2 in the air spaces
d. Lower turgor pressure
50. What is the 5th element in the
periodic table?
a. Lithium
b. Beryllium
c. Boron
d. Carbon
51. It is the protective shell of the
virus.
a. Nucleoid
b. Capsid
c. Plasmid
d. Viroid
52. Which of the following waves has the
highest frequency?
a. Violet
b. Red
c. Green
d. Indigo
53. Which of these is not one of the basic
characteristics of all living things?
a. Require energy
b. Reproduce sexually
c. Display organization
d. Homeostasis
54. Choose the incorrect association.
a. Occipital lobe- visual
b. Medulla- breathing
c. Cerebellum- memory
d. Hypothalamus- thermoregulation
55. What are the four kingdoms under
domain Eukarya?
a. Plantae, archae, Animalia, protists
b. Animalia, mycetae, Protista, plantae
c. Monera, plantae, Animalia, Protista
d. Protista, mycetae, Animalia, Monera
56. What type of digestion occurs in
mouth?
a. Mechanical
b. Physical and mechanical
c. Phytochemical and mechanical
d. Physical and chemical
57. Which of the following is produced
during photosynthesis?
a. Oxygen and water
b. Oxygen and ATP
c. Oxygen and organic compound
d. Oxygen and inorganic compound
58. During the periods of increased global
temperatures, which of the following is most likely to occur?
a. Decreased in typhoons
b. Increased in harvest
c. Decrease in atmospheric O2
d. Increase in atmospheric CO2
59. It refers to the development of an embryo
within an egg outside the mother’s body.
a. Ovipary
b. Ovovipary
c. Vivipary
d. Ovovivipary
60. The formation of synapsis occurs in
what sate of cell division?
a. Anaphase I
b. Anaphase II
c. Prophase I
d. Prophase II
61. These are soft bodies animals but most
are protected with a hard shell.
a. Annelids
b. Mollusk
c. Nematodes
d. Arthropods
62. Fish kills is one of the major effect
of this problem.
a. Acid precipitation
b. Water and air pollution
c. Eutrophication
d. Sediments formation
63. Cells spent most of their time in
_____ stage.
a. Division stage
b. S phase
c. G1 phase
d. G0 phase
64. If two variables A and B are inversely
proportional, which of these is NOT true?
a. When A is low, B is in high state.
b. As A increases, B also increases
c. When A increases, B decreases
d. A high A is associated with a low B.
65. Solution X has a pH of 3.0 while
solution Y has 8.3 pH. What is TRUE?
a. X is basic while Y is acidic
b. Both are acidic.
c. Both are basic.
d. X is acidic while Y is basic
66. In this situation, one animal is
benefited from the presence of the other animal while the other animal is not
harmed nor benefited.
a. Commensalism
b. Mutualism
c. Neutralism
d. Parasitism
67. All of the following are effects of
deforestation, EXCEPT:
a. Ozone layer depletion
b. Landslide
c. Flash flood
d. Global warming
68. Which of the following is incorrectly
matched?
a. Sieve tube: sugar transport
b. Mesophyll: photosynthesis
c. Vessel: water transport
d. Stoma: absorption of water
69. This is also known as ‘The Age of
Reptiles’ that upon the extinction of dinosaurs, Cenozoic Era begins.
a. Devonian
b. Ordovician
c. Mesozoic
d. Permian
70. Birds belongs to this class.
a. Aves
b. Reptilian
c. Amphibian
d. Mammalia
71. It is the process of taking in O2 and
CO2 out of the body.
a. Inspiration
b. External respiration
c. Expiration
d. Internal respiration
72. Its primary concerned is in the
maintenance of balance.
a. Cerebrum
b. Pons
c. Cerebellum
d. Medulla oblongata
73. It is an epithelial tissue that is
usually found on skin and esophagus.
a. Simple squamous
b. Stratified squamous
c. Simple cuboidal
d. Pseudostratified
74. The color of the leaves is green
because plants _____ green light.
a. Reflect
b. Refract
c. Absorbed
d. Transmitted
75. The general equation of photosynthesis
is (with the exception of light energy and chlorophyll).
a. 6CO2 + 4H20 -----à C6H1206 + 6O2
b. 6CO2 + 6H20 -----à C6H606 + 602
c. 6CO2 + 6H20 -----à C6H1206 + 602
d. 6CO2 + 4H2O -- --à C6H606 + 602
76. Which of the following does not belong
to the group?
a. Photosynthesis
b. Chemosynthesis
c. Autotroph
d. Heterotroph
77. What is the correct sequence of the
scientific method?
I- Experimentation
II- Formulation of a hypothesis
III- Observation
IV- Defining a problem
V- Formulation a theory
a. I, II, III, IV, V
b. IV, III, II, I, V
c. III, IV, II, I, V
d. V, IV, III, II, I
78. It is involved in modifying, sorting,
and packaging macromolecules.
a. Vacuoles
b. Golgi bodies
c. Ribosomes
d. Endoplasmic reticulum
79. Which of the following organelles does
not belong to the cytomembrane system?
a. Mitochondria
b. Endoplasmic reticulum
c. Vacuoles
d. peroxisomes
80. It involves the spontaneous and random
movement of molecules from one place to another.
a. Osmosis
b. Exocytosis
c. Diffusion
d. Passive transport
81. The ‘carrier molecules’ in the cell
membrane which facilitate the transport of large molecules in the cell are
actually _____.
a. Lipids
b. Carbohydrates
c. Proteins
d. Nucleic acids
82. The passage of materials into and out
of cells by active transport requires _____.
a. Concentration gradient only
b. Carrier and cellular energy
c. Vacuole or vesicle formation
d. Carrier and concentration gradient
83. It is a close ecological relationship
between individuals of two or more different species.
a. Symbiosis
b. Niche
c. Ecosystem
d. Biological habitat
84. In a food web, the producers are
always _____.
a. Animals
b. Plants
c. Decomposers
d. Cabbage
85. What is the function of the light
reactions of photosynthesis?
a. To obtain CO2
b. To make carbohydrates in a form of
glucose
c. To make ATP and NADPH
d. To generate RuBP
86. What cells in leaves are specialized
for photosynthesis?
a. Companion cells
b. Tracheid cells
c. Stomata
d. Mesophyll
87. It is the site of protein synthesis.
a. Mitochondria
b. Endoplasmic reticulum
c. Nucleus
d. Ribosomes
88. Mosses are plants that are small and
cannot grow very large because _____.
a. They reproduce by spores
b. They tend to lose a lot of water
c. They do not have vascular tissues
d. They do not have true leaves for
photosynthesis
89. Flowering plants are more successful
and dominant than gymnosperms in dry terrestrial habitat because ______.
a. Their seeds are protected inside a fruit
b. Their seeds are dispersed by wind
rather than water
c. Their cell walls are strengthened by
lignin to support their tall heights
d. Their parts are protected by a waxy
water-proof substance called cutin.
90. Which of the following statements
about cellular components of blood is FALSE?
a. Some lymphocytes produce antibodies.
b. Red blood cells and some white blood
cells are produced in the bone marrow.
c. Lymphocytes are produced in the lymph
nodes.
d. Blood platelets are cells produced by megakaryocytes in the bone
marrow.
91. Suppose a type AB patient needs blood
transfusion. Which blood donation should NOT be given to him?
a. Type AB
b. Type O
c. Type B
d. Type A
92. A husband with normal color vision has
a pregnant color-blind wife. What is the probability of having a normal
daughter?
a. ½
b. ¼
c. ¾
d. 1
93. Suppose the normal chromosome number
in humans was 50, of which two were also sex chromosomes, which of these then
would be a biological female?
a. 48 XXY
b. 48 XY
c. 48 XYY
d. 48 XO
94. All of the following bases are found
in DNA EXCEPT:
a. Uracil
b. Adenine
c. Guanine
d. Cytosine
95. If both parents are heterozygous, the
probability that a recessive trait will appear in the offspring is ____.
a. 75%
b. 50%
c. 25%
d. 0%
96. A women with a type AB blood is
married to a type O man. What are the chances that their child will have blood
type of A?
a. 100%
b. 75%
c. 50%
d. 25%
97. Which statement about human karyotype
is NOT true?
a. Sex chromosomes are not included.
b. Chromosomes are organized into pairs.
c. Metaphase chromosomes are photographed.
d. Autosomes are arranged from longest to
shortest.
98. Spermatogenesis occurs in ______.
a. Epididymis
b. Testes
c. Gonads
d. Seminiferous tubules
99. What lubricates food and protects the
stomach from HCL?
a. Pepsin
b. Lipase
c. Mucus
d. Chemotrypsin
100. The following parts of a cell are
common to all EXCEPT one:
a. DNA
b. Plasma membrane
c. Nucleus
d. Ribosome