BIOLOGICAL SCIENCE – 100 ITEMS

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


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