biological sciences

LICENSURE EXAMINATION FOR TEACHERS PRACTICE TEST

BIOLOGICAL SCIENCE (RANDOM)

1. Where do producers obtain their energy? A.

From other producers

B.

From the consumers

C.

From the decomposers

D.

From the sun

2. Why do you experience not seeing things clearly for some seconds when you enter suddenly a well-lighted room after coming from a dark room, you? A.

The pupils are not adapted to the dark

B.

The eyes are adapted to the light only

C.

The pupils are not dilated yet

D.

Light had caused temporary blindness

3. What term is used to describe the ability to maintain a constant internal environment? A.

Metabolism

B.

Growth and development

C.

Homeostasis

D.

Thermoregulation

4. What is the most common cause of cardiovascular disease? A.

Fatty deposits in the arteries

B.

Inadequate supply of red blood cells

C.

Lack of sodium in the diet

D.

Increased heartbeat

5. Which is the smallest unit of life that can survive and reproduce on its own? A.

Cell

B.

Organ

C.

Tissues

D.

Population

6. Which region of a vertebrate forebrain is considered with the neutral-endocrine control of visceral activities? A.

Cerebellum

B.

Thalamus

C.

Hypothalamus

D.

Pituitary

7. Which of the following is the building block carbohydrate? A.

Amino acid

B.

Nucleotide

C.

Fatty acid

D.

Monosaccharide

8. Why it is necessary men have more red blood cells per cubic millimeter of blood than women? A.

Man does strenuous activities and need more energy

B.

They have bigger physique and need more blood

C.

Man waste more blood cells and need extra

D.

They are more prone to anemia disorders

9. Which of the following is the building block of protein? A.

Amino acid

B.

Nucleotide

C.

Fatty acid

D.

Monosaccharide

10. Where does protein synthesis take place? A. B.

Ribosome Lysosomes

C.

Endoplasmic reticulum

D.

Golgi bodies

11. Why are our lips “redder” than our palm? A.

There is increased blood flow in the lips

B.

Lips are heavily keratinized

C.

Lip epidermis is thinner

D.

Many blood vessels are located around the lips

12. Which of the following cannot be found in prokaryotes? A.

Cytoplasm

B.

Plasma membrane

C.

Membrane-bound nucleus

D.

DNA

13. What do we call mutation that is brought about by the earth natural radioactivity? A.

Continuous

B.

Induced

C.

Lysosomes

D.

Chloroplast

14. Which of the following organelles produces turbo pressure against cell wall and mainly acts as water reservoir A.

Plastids

B.

Vacuole

C.

Lysosomes

D.

Chloroplast

15. What is the branch crobial organisms is used in the creation of genetically modified organisms? A.

Pseudomonas vulgaris

B.

Bacillus thuringensis

C.

Agro bacterium tumafaciens

D.

Escherichia coli

16. What is the branch of zoology that is devoted to the study of fish? A.

Helmintology

B.

Ichthyology

C.

Chondrichthyes

D.

Ornithology

17. The process involved in the production of mRNA using DNA as template is termed _______? A.

Transcription

B.

Replication

C.

Gene manipulation

D.

Reverse transcription

18. What is the most abundant inorganic compound in the protoplasm? A.

Fluid

B.

Blood

C.

Plasma

D.

Water

19. Which is the riches type of tropical rain forest in the Philippines? A.

Molave forest

B.

Dipterocarp forest

C.

Mangrove forest

D.

Pine forest

20. What muscle is described as involuntary, not striated, and have a single nucleus? A.

Smooth

B.

Skeletal

C.

Cardiac

D.

Connective

21. We feel warmer just before it rains because __________. A.

Heat is released by the evaporation of water

B.

The clouds prevent heat from escaping the earth

C.

There is an increased relative humidity

D.

Heat is released by the condensation of water vapor

22. Which of the following is not considered as a reproductive cell? A.

Gamete

B.

Somatic cell

C.

Egg cell

D.

Sperm cell

23. The cell wall of plant is made of _______. A.

Lipids

B.

Cellulose

C.

Protein

D.

Cell membrane

24. Which of the following is the correct sequence of the level of organization from lowest to highest? A.

Cells-system-organs-tissues

B.

System-organs-tissues-cells

C.

Cells-tissues-organs-system

D.

Tissues-systems-cells-organs

25. At metaphase of the meiotic division, the chromosomes are attached to the spindle fibers as ________. A. B.

Double chromatids Non-homologous pairs

C.

Single chromatid strands

D.

A tetrad of four chromatids

26.Which of the following is an example of behavioral adaption? A.

Thick green stems of the cactus plant

B.

Thick fur of the bear

C.

Shedding leaves during summer

D.

Presence of cuticle on the upper surface of the leaves

27. The bipolar nature of the cell membrane is due to _______. A.

Presence of carries

B.

Presence of

C.

Phospholipids bilayer

D.

Integral proteins

28. Which of the following is made up of diploid number of cells? A.

Zygote

B.

Sperm cell

C.

Egg cell

D.

Both B and C

29. Which plant has underground stem modified for reproduction? A.

Ginger

B.

Camote

C.

Tubers

D.

Strawberry

30. Which of the following structures serve as a passageway of food and air? A.

Epiglottis

B.

Trachea

C.

Pharynx

D.

Larynx

31. Which kind of relationship is exhibited by algae and fungi in lichen? A.

Commensalism

B.

Parasitism

C.

Symbiosis

D.

Competition

32. What do you call the finger-like folds on the inner linings of the small intestine? A.

Villi

B.

Appendix

C.

Rugae

D.

Cecum

33. Aside from ADP, what else is the end production of the dark-reaction phase of photosynthesis? A.

Carbon dioxide

B.

Sugar

C.

Carbon

D.

Starch

34. What is that flap-like structure that prevents the food from going the wrong way during swallowing? A.

Epiglottis

B.

Larynx

C.

Esophagus

D.

Pharynx

35. Which pigment is dominant in red algae? A.

Phycocyanin

B.

Fucoxanthin

C.

Chlorophyll

D.

Pharynx

36. What is the membrane that surrounds the lungs? A.

Pleura

B.

Meninges

C.

Peritoneum

D.

Pericardium

37. What is that 3-carbon sugar formed during the dark reaction phase of the photosynthesis? A.

ADP

B.

NADPH

C.

ATP

D.

PGAL

38. What is the product of carbohydrate digestion? A.

Fatty acid

B.

Glucose

C.

Amino acid

D.

Nucleic acid

39. What process is responsible for the upward movement of the water in very tall trees? A.

Osmosis

B.

Capillary action

C.

Turgor pressure

D.

Transpiration

40. What is the enzyme in the mouth that breaks starch to maltose? A.

Peptidase

B.

Ptyalin

C.

Pepsin

D.

Maltase

41. What do you call the types of symmetry where the body parts are paired on either side of the body? A.

Dorsal

B.

Bilateral

C.

Radial

D.

Ventral

42. Which is considered as the respiratory center of the brain? A.

Cerebellum

B.

Medulla oblongata

C.

Cerebrum

D.

Thalamus

43. Which stage of incomplete metamorphism is undergone by grasshopper? A.

Nymph, pupa, adult

B.

Egg, larva, pupa, adult

C.

Egg, nymph, adult

D.

Egg, pupa, adult

44. Which of the following is NOT part of the thoracic cage? A.

Clavicle

B.

Ribs

C.

Costal cartilages

D.

Sternum

45. Where does the toxin substance secreted by bees and ants through their sting originate? A.

Silk glands

B.

Intestines

C.

Rectal glands

D.

Salivary glands

46. What is the longest bone in the body? A.

Humerus

B.

Femur

C.

Tibia-fibula

D.

Clavicle

47. Which cause our bones to turn brittle and easily break? A.

Turning into muscle tissues

B.

Increase in flexibility

C.

Turbidity decrease

D.

Removal of collagen

48. How many bones does an adult human body has? A.

201

B.

200

C.

217

D.

206

49. What do you call automatic responses to an external stimulus? A.

Reflex

B.

Instinct

C.

Impulse

D.

All of these

50. What structure provides flexible support and protection to the spinal cord? A.

Skull

B.

Ribs

C.

Vertebral column

D.

Sternum

51. Which hormone is insufficient in cretinism? A. Glucagon

B.

Adrenalin

C.

Insulin

D.

Thyroxin

52. Which of the following is both endocrine and an exocrine gland? A.

Gastric glands

B.

Thyroid glands

C.

Pituitary glands

D.

Pancreas

53. What organ is controlled by the automatic nervous system? A.

Skeletal

B.

Muscles

C.

Heart

D.

Both A and B

54. 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.

Chime

55. 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

56. Which part of the brain is responsible for intelligence, memory and learned behavior?

A.

Cerebellum

B.

Cerebrum

C.

Medulla

D.

Thalamus

57. Which of these materials is not a major component of the plasma membrane? A.

Phospholipids

B.

Glycoprotein

C.

Proteins

D.

DNA

58. Which form of RNA delivers information from DNA to be used in making protein? A.

Messenger RNA

B.

Ribosomal RNA

C.

Transfer RNA

D.

All of the above

59. Which of the following is not a type of cell? A.

Bacterium

B.

Amoeba

C.

Sperm

D.

Virus

60. Which property of water is probably MOST important for the functioning of organisms at the molecular level? A.

Cohesion and high surface tension

B.

High specific heat

C.

High heat of vaporization

D.

Versatility as a solvent

61. Which of the following statements is true of diffusion? A. B.

It requires an expenditure of energy by the cell It is a passive process

C. It occurs when molecules move from a region of lower concentration to one of higher concentration D.

It requires a membrane

62. Which of the following is FALSE in comparing prophase I of meiosis and prophase of mitosis? A.

The chromosomes condense in both

B.

Tetrads form in both

C.

The nuclear envelope disassembles in both

D.

A spindle forms in both

63. Which are small, irregularly-shaped cells without nuclei but are rich in ATP? A.

Leukocytes

B.

Thrombocytes

C.

Lymphocytes

D.

Erythrocytes

64. What branch of Biology is involved when one is studying the characteristic structure and functions of all kinds of cells? A.

Cytology

B.

Morphology

C.

Physiology

D.

Histology

65. Which part of seed appears as a scar which marks the entry of the pollen tube during fertilization? A.

Seed leaf

B.

Cotyledon

C.

Testa

D.

Hilum

66. Which type of tissue is responsible for the secondary growth in stems and roots of vascular plants? A.

Meristematic cells

B.

Cambium

C.

Palisade layer

D.

Epidermis

67. Which biome grows tropical grassland with scattered individual trees and larger herbivores? A.

Tundra

B.

Rain forest

C.

Grassland

D.

Savanna

68. What do you call that process in birds wherein they shed off features at least once a year? A.

Skinning

B.

Molting

C.

Furrowing

D.

Migrating

69. What chemical controls metamorphosis among insects? A.

Enzymes

B.

Estradol

C.

Pheromones

D.

Ethylene

70. Which of the following makes up the plant cell wall? A.

Nucleic acid

B.

Cellulose

C.

Protein

D.

Lipids

71. Which of the following is not true of fungi? A.

Some are pathogenic

B.

Some are photosynthetic

C.

Some are edible

D.

Form symbiotic relation with algae

72. Which of the following is not true of plants? A.

Some are pathogenic

B.

Some are photosynthetic

C.

Some are edible

D.

Form symbiotic relation with algae

73. Which of the following is considered multicellular? A.

Embryo

B.

Fertilized egg

C.

Egg cell

D.

Sperm cell

74. What hormone promotes the growth of the uterine lining for the implantation of the embryo? A.

Lactogenic hormone

B.

Progesterone

C.

Testosterone

D.

Oxytocen

75. Which of the following pair of organisms are closely related? A.

Spider and mosquito

B.

Frog and crocodile

C.

Man and monkey

D.

Ants and aphids

76. What does it mean if the blood pressure of human is 110/70? A.

The systolic pressure is 70

B.

The diastolic pressure is 70

C.

The pulse rate is 110 beats per minute

D.

Both B and C

77. Which of the following happens when man exhale? A.

The residual volume of the lungs decreases

B.

The diaphragm contracts

C.

The volume of the thoracic cavity decreases

D.

The lung contracts

78. Which of the following regulate breathing? A.

RBC concentration

B.

Number of hemoglobin

C.

Hormone level in blood

D.

CO2 and O2 concentration and pH level sensors

79. Which of the following has the lowest velocity of blood flow A.

Veins

B.

Arteries

C.

Capillaries

D.

Arterioles

80. How many carbon atoms can each pyruvic acid supply into the Kreb’s cycle? A.

8

B.

6

C.

4

D.

2

81. How many oxygen is required each time to a molecule of glucose is completely oxidized through aerobic respiration? A.

3

B.

6

C.

12

D.

24

82. Which of the following will not be accepted by glycolysis for catabolism? A.

Starch

B.

Glycerol

C.

Fatty acid

D.

Sucrose

83. Which of the following characteristic is common between echinoderms and cnidarians? A.

They are both radically symmetrical

B.

They have segmented bodies

C.

Both have stinging cells

D.

They have three embryonic tissue layers

84. Which of the following is true of Phylum Chordata? I. Presence of notochord that provides skeletal support II. Pharyngeal slits that have become modified for gas exchange III. Dorsal hallow nerve cord that develops into the central nervous system A.

II and III

B.

I and II

C.

I and III

D.

I, II and III

85. Which of the following cannot be associated with fungi? A.

Absorptive nutrition

B.

Decomposers

C.

Autotrophs

D.

Spore production

86. Which of the following does not involve mitosis? A.

Development of embryo

B.

Growth

C.

Production of gametes

D.

Repairing of damaged tissues

87. Which of the followings is true of mammals? I. They have four chambered heart II. They produce milk for the young III. They are warm blooded A.

I and II

B.

II and III

C.

I and III

D.

I, II and III

88. What term describes an egg develop into a new organism without itself being fertilized be a sperm? A.

Regeneration

B.

Conjugation

C.

Parthenogenesis

D.

Fusion

89. Which of the following is responsible for formation of blood cell? A.

Cartilage

B.

Bone narrow

C.

Joints

D.

Tendons

90. What is most likely happen when a species cannot adapt to the changes in the environment? A.

It will be transform to another form

B.

It will become extinct

C.

It will be isolated

D.

It will grow old

91. What term is used to describe the released of matured egg cell from the ovary? A.

Fertilization

B.

Copulation

C.

Ovulation

D.

Germination

92. Which of the following blood cells is responsible for blood clotting? A.

Erythrocytes

B.

Leukocytes

C.

Thrombocytes

D.

Neutrophils

93. Where does ectopic pregnancy occur? A.

Uterus

B.

Ovary

C.

Cervix

D.

Fallopian tube

94. Why is cell membrane semi permeability important? A.

It is important in determining the size of the cell

B.

It controls the kind of substances that enters and leaves the cell

C.

It controls the pressure and energy gradient

D.

It allows the molecules to diffuse freely in and out of the cell

95. What theory of evolution accounts for snake’s disappearance of legs and development of giraffe’s long neck? A.

Theory of use and disuse

B.

Theory of natural selection

C.

Theory of chromosomal change

D.

Theory of action and interaction

96. Which of the following is an exocrine gland? A.

Plastids and pigments

B.

Asters and centrioles

C.

Chloroplasts and vacuoles

D.

Cell wall and cell membrane

97.Which of the following is an exocrine gland? A.

Thyroid gland

B.

Salivary gland

C.

Pituitary gland

D.

Adrenal gland

98. Which of the following is not an accessory organ of digestion? A.

Liver

B.

Pancreas

C.

Salivary gland

D.

Adrenal gland

99. What hormone stimulates the development of male secondary sex characteristics? A.

Estrogen

B.

Prolactin

C.

Testosterone

D.

Progesterone

100. Which of the following parts performs both as reproductive and urinary functions in males? A.

Ureter

B.

Testes

C.

Urethra

D.

Scrotum

101. Which is the process of removing from the cells and bloodstream substances that are of no further use to our body? A. Respiration

C. Digestion

B. Circulation

D. Excretion

102. Which is an accessory organ of digestion whose function is to store and concentrate bile which is secreted by the liver? A. Spleen

C. Gall bladder

B. Urinary bladder

D. Pancreas

103. Identify the genetic engineering process that join cells of similar characteristics that are often closely related. A. DNA typing B. Protoplast fusion

C. Cloned DNA D. Hybridoma

104. What is the most significant cause of dwindling biodiversity? A. Depletion of ozone layer B. Large plant consumption

C. Global warming D. Destruction of habitat

105. Because she has a wide forehead, her grandma says she will be a bright student. What could be inferred from his belief? A. The cerebrum coordinates the action of all parts. B. The frontal lobe of the brain is the cerebrum. C. The front part is inactive when we think. D. The thalamus is located in the sides.

106. The phenotypic ratio in the offspring resulting from a cross Tt x Tt is A. 1:3

C. 1:2:1

B. 4:0

D. 3:1

107. Acid rain is brought about by burning tremendous amount of fossil fuel. Which are some harmful gases that are released from burning fossil fuels? A. Hydrogen and oxygen

C. Carbon dioxide and helium

B. Sulfur dioxide and nitrogen

D. Ozone and water vapor

108. Which part of the brain is responsible for thinking and reasoning? A. Medulla B. Cerebellum

C. Thalamus D. Cerebrum

109. Name the gaseous hormone which is commonly used in inducing ripening of fruits. A. Enzyme B. Methylene

C. Traces D. Ethylene

110. Protein is one of the most essential food nutrients needed before and after birth, otherwise irreversible mental retardation may occur. Which are some good sources of protein? A. Corn, potato, bread B. Noodles, orange, apple C. Beans, eggs, milk

D. Garlic, pepper, eggplant

111. Which is an abiotic component that affects life in an ecosystem? A. Animals

C. Temperature

B. Plants

D. Humans

112. Which of the following animal exhibits incomplete metamorphosis? A. Butterfly

C. Grasshopper

B. Moth

D. Skipper

113. What processes are responsible for the occurrence of the hydrologic cycle? A. Evaporation and sublimation B. Transpiration and evaporation C. Condensation and transpiration D. Evaporation and condensation

114. Today, researchers have discovered chemical indicators in the genetic material which can trace those who are predisposed to heart attack. What is this technique? A. Irradiation B. In-breeding technique

C. Gene-splicing technology D. Linkage

115. Which describes the type of cells that all animals are made of? A. Endoplasmic B. Eukaryotic

C. Compound D. Prokaryotic

116. The fleshy part of the cashew which we eat is its_____________. A. Ovule

C. Peduncle

B. Ovary

D. Receptacle

117. Lipase aids in the digestion of______________. A. Enzymes B. Proteins

C. Salts D. Fats

118. Cells of us unicellular organisms, like bacteria and blue green algae are simple in structure. They are classified as_________________. A. Eukaryotic

C. Prokaryotic

B. Nucleod

D. Karyotic

119. Insulin which enables the liver to store sugar secreted by the______________. A. Pituitary gland B. Adrenal medulla

C. Islets of langerhans D. Adrenal cortex

120. Which is the procedure of calculating the age of an object that contains radioactive isotopes? A. Rock decay B. Radiometric dating

C. Fossil examination D. Fossil indexing

121. As the test of the seed breaks, which structures come out first and grow into the first true leaves and roots? A. Two seed-leaves B. Micropyle and epicotyls

C. Plumule and radicle D. Testa and tegmen

122. What type of muscle occurs in the walls of hollow structure like ducts, blood vessels and intestines whose contraction is “involuntary”? A. Straited

C. Smooth

B. Skeletal

D. Cardiac

123. Where does exchange of materials between the blood and the cells take place? A. Arteries B. Veins

C. Platelets D. Capillaries

124. Butterflies and mosquitoes have mouthparts in the form of a long, narrow, coiled tube called__________. A. Mandibles B. Proboscis

C. Antennae D. Filament

125. Which is the ring of muscle that serves as the opening between the stomach and the small intestines? A. Septum

C. Anal

B. Sphincter

D. Rectal

126. Which are the tiny organs located each segment that are used for locomotion by the earthworms? A. Flagella B. Cilia

C. Pseudopodia D. Setae

127. Which lung disorder is present when the alveolar walls breakdown and gas exchange is disturbed? A. Macrophage destruction B. Emphysema

C. Bronchial irritation D. Pulmonary crisis

128. Why is it not advisable to drink sea water? A. It can result in swelling. B. The cells will burst instantly. C. The cells will melt. D. It can cause dehydration of the cells.

129. It is a process of accelerated biodegradation of moist kitchen waste into a humus-like product. What is this process? A. Shredding

C. Composting

B. Recycling

D. Reuse

130. In a carbon-oxygen cycle where does the oxygen come from? A. Animals B. Water

C. Plants D. Soil

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