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Vocabulary List - Letter A

Total questions: 100

Worksheet time: 50mins

Name
Class
Date
1.

A skin disorder characterized by scaly skin, pimples, blackheads, whiteheads, and nodules is called _________.

a)

Acne

b)

Psoriasis

c)

Eczema

d)

Rosacea

2.

A volcano that erupts or has erupted during the past 10,000 years is called an _________.

a)

Active volcano

b)

Dormant volcano

c)

Extinct volcano

d)

Shield volcano

3.

A liquid form of a gas is known as _________

a)

Aerosol

b)

Vapor

c)

Foam

d)

Mist

4.

A minor tremor after the principal shock of an earthquake is called an _________

a)

Aftershock

b)

Epicenter

c)

Magnitude

d)

Seismograph

5.

An artificial vegetative propagation technique where a stem is slit and enclosed with moist moss is called _________.

a)

Air layering

b)

Grafting

c)

Cutting

d)

Budding

6.

A substance that causes allergic reactions is called an _________

a)

Allergen

b)

Antibody

c)

Enzyme

d)

Pathogen

7.

The alternation of sexual and asexual phases in the life cycle of ferns and mosses is called _________.

a)

Alternation of generations

b)

Metamorphosis

c)

Binary fission

d)

Budding

8.

An air sac in the lung is called _________.

a)

Alveolus

b)

Bronchus

c)

Trachea

d)

Capillary

9.

A chemical that is made up of hydrogen and nitrogen is called _________.

a)

Ammonia

b)

Methane

c)

Nitric acid

d)

Hydrogen peroxide

10.

A condition characterized by temporary or permanent memory loss is called _________.

a)

Amnesia

b)

Insomnia

c)

Dementia

d)

Epilepsy

11.

A protozoan with a clear shapeless cell that moves slowly along a surface by using its pseudopodia is called _________.

a)

Amoeba

b)

Paramecium

c)

Euglena

d)

Plasmodium

12.

A cold-blooded vertebrate that is covered with moist skin, lays eggs in water, and has a three-chambered heart is called an _________.

a)

Amphibian

b)

Reptile

c)

Fish

d)

Bird

13.

A short tube below the rectum that serves as passageway of solid waste is called _________.

a)

Anal canal

b)

Esophagus

c)

Ureter

d)

Trachea

14.

A condition characterized by an abnormally low number of red blood cells or by a decrease in the amount of hemoglobin in the blood is called _________.

a)

Anemia

b)

Leukemia

c)

Hemophilia

d)

Polycythemia

15.

An instrument that measures the speed of wind is called an _________.

a)

Anemometer

b)

Barometer

c)

Thermometer

d)

Hygrometer

16.

A condition in which a blood vessel swells and its walls become thin is called _________.

a)

Aneurysm

b)

Thrombosis

c)

Embolism

d)

Stenosis

17.

An invertebrate having a long cylindrical body that is divided into segments is called _________.

a)

Annelid

b)

Mollusk

c)

Arthropod

d)

Cnidarian

18.

The period from midnight to noon is called _________.

a)

Ante meridiem

b)

Post meridiem

c)

Twilight

d)

Midday

19.

The male organ of ferns and mosses that forms and holds the sperm cells is called _________.

a)

Antheridium

b)

Archegonium

c)

Sporangium

d)

Prothallus

20.

A protein that protects the body against disease-causing microorganisms is called an _________

a)

Antibody

b)

Enzyme

c)

Hormone

d)

Hemoglobin

21.

The opening in the body through which solid waste is eliminated is called the _________.

a)

Anus

b)

Esophagus

c)

Urethra

d)

Trachea

22.

The largest artery is called the _________.

a)

Aorta

b)

Pulmonary vein

c)

Carotid artery

d)

Femoral artery

23.

The point where Earth is farthest from the sun is called _________.

a)

Aphelion

b)

Perihelion

c)

Solstice

d)

Equinox

24.

The part of the bulb that grows upward at the peak and produces leaves and flowers is called the _________?

a)

Apical bud

b)

Basal plate

c)

Root cap

d)

Lateral bud

25.

An inflammation of the appendix is called _________

a)

Appendicitis

b)

Gastritis

c)

Hepatitis

d)

Nephritis

26.

A finger-shaped structure in the large intestine that may play a role in fighting infection is called the _________.

a)

Appendix

b)

Cecum

c)

Rectum

d)

Colon

27.

An arthropod that has four pairs of legs, with head and thorax in a single prosoma is called _________.

a)

Arachnid

b)

Insect

c)

Crustacean

d)

Myriapod

28.

The female organ of ferns and mosses that forms and holds the egg cells is called _________.

a)

Archegonium

b)

Antheridium

c)

Sporangium

d)

Prothallus

29.

A condition when the rhythm of the heart becomes irregular is called _________.

a)

Arrhythmia

b)

Hypertension

c)

Bradycardia

d)

Tachycardia

30.

A blood vessel that is smaller than an artery is called an _________.

a)

Arteriole

b)

Vein

c)

Capillary

d)

Venule

31.

A blood vessel that generally carries oxygenated blood is called _______.

a)

Artery

b)

Vein

c)

Capillary

d)

Venule

32.

The inflammation of the joints is known as _______.

a)

Arthritis

b)

Osteoporosis

c)

Myalgia

d)

Dermatitis

33.

A group of animals characterized by segmented chitinous exoskeleton and jointed appendages are called _______.

a)

Arthropod

b)

Mollusk

c)

Echinoderm

d)

Annelid

34.

An infection in the lining of the intestines caused by ascarides is called _______.

a)

Ascariasis

b)

Amoebiasis

c)

Giardiasis

d)

Taeniasis

35.

An elongated and cylindrical intestinal worm that infects humans is called _______.

a)

Ascaris

b)

Taenia

c)

Ancylostoma

d)

Enterobius

36.

A way of propagating plants that does not involve reproductive cells is called _______.

a)

Asexual reproduction

b)

Sexual reproduction

c)

Pollination

d)

Fertilization

37.

An ash deposit from the volcano is called _______.

a)

Ashfall

b)

Lava flow

c)

Pyroclastic surge

d)

Magma chamber

38.

A neuron that connects a sensory neuron and a motor neuron is called _______.

a)

Associative neuron

b)

Sensory neuron

c)

Motor neuron

d)

Glial cell

39.

The narrowing of the bronchial tubes that may be caused by allergens, weather, or certain medications is called _______.

a)

Asthma

b)

Bronchitis

c)

Pneumonia

d)

Emphysema

40.

A scientist who studies the heavenly bodies is called an _______.

a)

Astronomer

b)

Biologist

c)

Geologist

d)

Chemist

41.

A condition in which fats, calcium, and dead cells deposit along the inner walls of the arteries and prevent the smooth flow of blood is called _______.

a)

Atherosclerosis

b)

Osteoporosis

c)

Leukemia

d)

Emphysema

42.

The force exerted by air is called _______.

a)

Atmospheric pressure

b)

Gravity

c)

Magnetic force

d)

Friction

43.

A circular reef with open water at the center is called _______.

a)

Atoll reef

b)

Barrier reef

c)

Fringing reef

d)

Patch reef

44.

The receiving chamber of the heart is called _______.

a)

Atrium

b)

Ventricle

c)

Aorta

d)

Valve

45.

A division of the peripheral nervous system that controls involuntary actions and activities of the smooth and cardiac muscles is called _______.

a)

Autonomic nervous system

b)

Somatic nervous system

c)

Central nervous system

d)

Sensory nervous system

46.

The time when approximately equal length of day and night occurs; takes place on September 23 is called _______.

a)

Autumnal equinox

b)

Summer solstice

c)

Winter solstice

d)

Vernal equinox

47.

An imaginary line that passes through the poles at which Earth rotates is called _______.

a)

Axis

b)

Equator

c)

Meridian

d)

Latitude

48.

A long nerve fiber of a neuron is called _______.

a)

Axon

b)

Dendrite

c)

Synapse

d)

Cell body

49.

A type of joint that allows the connected bones to move in many directions is called _______.

a)

Ball-and-socket joint

b)

Hinge joint

c)

Pivot joint

d)

Gliding joint

50.

An instrument that measures atmospheric pressure is called a _______.

a)

Barometer

b)

Thermometer

c)

Hygrometer

d)

Anemometer

51.

A reef that is separated from the island shore by a lagoon, or a shallow stretch of water partly separated from the sea by a strip of sand is called _______.

a)

Barrier reef

b)

Fringing reef

c)

Atoll

d)

Coral island

52.

A greenish fluid that aids in digestion of fats is called _______.

a)

Bile

b)

Saliva

c)

Mucus

d)

Plasma

53.

A vertebrate that is warm-blooded, has a spindle-shaped body, and is covered with feathers is called a _______.

a)

Bird

b)

Fish

c)

Reptile

d)

Amphibian

54.

A combination of fixed and movable pulleys is called _______.

a)

Block-and-tackle pulley

b)

Inclined plane

c)

Lever system

d)

Wheel and axle

55.

The pressure that is exerted by blood on the inner walls of the blood vessels is called _______.

a)

Blood pressure

b)

Pulse rate

c)

Osmotic pressure

d)

Atmospheric pressure

56.

The passageway of blood is called a _______.

a)

Blood vessel

b)

Nerve fiber

c)

Air sac

d)

Lymph node

57.

The fluid that carries oxygen from the lungs to the different cells of the body is called _______.

a)

Blood

b)

Saliva

c)

Urine

d)

Sweat

58.

The nostril on top of the head of a cetacean is called a _______.

a)

Blowhole

b)

Gill slit

c)

Snout

d)

Spiracle

59.

The body fat of a cetacean is called _______.

a)

Blubber

b)

Flipper

c)

Plankton

d)

Barnacle

60.

A soft and pasty mass produced from mechanical digestion in the mouth is called _______.

a)

Bolus

b)

Chyme

c)

Feces

d)

Saliva

61.

The most highly specialized organ of the human body is the _______.

a)

Brain

b)

Liver

c)

Heart

d)

Kidney

62.

A part of the brain that maintains the essential regulatory mechanisms of the body is called _______.

a)

Brain stem

b)

Cerebellum

c)

Cerebrum

d)

Hypothalamus

63.

An abnormal growth of cells in the brain is known as _______.

a)

Brain tumor

b)

Stroke

c)

Meningitis

d)

Epilepsy

64.

The process of getting oxygen-containing air into the body and expelling carbon dioxide-containing air out of the body is called _______.

a)

Breathing

b)

Digestion

c)

Circulation

d)

Excretion

65.

A smaller branch of the bronchus is called a _______.

a)

Bronchiole

b)

Alveolus

c)

Trachea

d)

Larynx

66.

The inflammation of the bronchi inside the lungs is called _______.

a)

Bronchitis

b)

Asthma

c)

Pneumonia

d)

Emphysema

67.

A segment of the respiratory tract that serves as passageway of air from the trachea is called _______.

a)

Bronchus

b)

Alveolus

c)

Diaphragm

d)

Larynx

68.

An artificial vegetative propagation technique that is similar to grafting except that a bud is used instead of a twig is called _______.

a)

Budding

b)

Layering

c)

Cutting

d)

Micropropagation

69.

A vegetative plant that consists of short underground stems, and has many fleshy leaves that store food is called a _______.

a)

Bulb

b)

Tuber

c)

Rhizome

d)

Corm

70.

A mineral that hardens the reef when the corals die is called _______.

a)

Calcium carbonate

b)

Silica

c)

Magnesium sulfate

d)

Sodium chloride

71.

The growing layer of a stem is called _______.

a)

Cambium

b)

Cortex

c)

Xylem

d)

Phloem

72.

The smallest blood vessel is called a _______.

a)

Capillary

b)

Vein

c)

Artery

d)

Venule

73.

The main muscle comprising the heart is called _______.

a)

Cardiac muscle

b)

Skeletal muscle

c)

Smooth muscle

d)

Striated muscle

74.

A division of the circulatory system that is composed of the heart, the blood vessels, and the blood for distribution of oxygen and nutrients throughout the body is called the _______.

a)

Cardiovascular system

b)

Respiratory system

c)

Digestive system

d)

Nervous system

75.

A plant that eats small animals such as insects is called a _______.

a)

Carnivorous plant

b)

Herbivorous plant

c)

Aquatic plant

d)

Desert plant

76.

A connective tissue that protects the bones from rubbing against each other is called _______.

a)

Cartilage

b)

Ligament

c)

Tendon

d)

Muscle

77.

A type of fish that has a spindle-shaped body and tail fins that are used in swimming is called a _______.

a)

Cartilaginous fish

b)

Flatfish

c)

Jawless fish

d)

Lobe-finned fish

78.

The central part of the neuron that contains the nucleus is called the _______.

a)

Cell body

b)

Axon

c)

Dendrite

d)

Synapse

79.

The inflammation of the skin and deep underlying tissues is called _______.

a)

Cellulitis

b)

Eczema

c)

Psoriasis

d)

Impetigo

80.

A division of the nervous system that is composed of the brain and the spinal cord is called the _______.

a)

Central nervous system

b)

Peripheral nervous system

c)

Autonomic nervous system

d)

Somatic nervous system

81.

The second largest part of the brain is called the _______.

a)

Cerebellum

b)

Medulla

c)

Pons

d)

Thalamus

82.

A partial or complete brain damage before, during, or shortly after birth is called _______.

a)

Cerebral palsy

b)

Epilepsy

c)

Hydrocephalus

d)

Autism

83.

A fluid that surrounds the brain and the spinal cord, and can also be found in spaces within the brain is called _______.

a)

Cerebrospinal fluid

b)

Synovial fluid

c)

Lymph

d)

Blood

84.

The largest part of the brain is called the _______.

a)

Cerebrum

b)

Cerebellum

c)

Medulla

d)

Pons

85.

A mammal that lives in water, but must come to the surface to breathe air through its blowhole is called a _______.

a)

Cetacean

b)

Crustacean

c)

Amphibian

d)

Reptile

86.

A process that occurs when chemicals break down food into simpler form is called _______.

a)

Chemical digestion

b)

Physical digestion

c)

Absorption

d)

Assimilation

87.

A viral infection characterized by itchy rashes and fluid-filled blisters is called _______.

a)

Chicken pox

b)

Measles

c)

Mumps

d)

Influenza

88.

The permanent loss of kidney function is called _______.

a)

Chronic renal failure

b)

Nephrolithiasis

c)

Acute nephritis

d)

Urinary tract infection

89.

Short hairlike projections are called _______.

a)

Cilia

b)

Flagella

c)

Villi

d)

Pseudopodia

90.

________ is the process by which oxygen and nutrients are carried by the blood to all parts of the body.

a)

Circulation

b)

Respiration

c)

Digestion

d)

Excretion

91.

________ is the organ system that is responsible for circulation of blood and lymph throughout the body.

a)

Circulatory system

b)

Digestive system

c)

Respiratory system

d)

Nervous system

92.

________ is the feather-like formation of cloud.

a)

Cirrus cloud

b)

Cumulus cloud

c)

Stratus cloud

d)

Nimbus cloud

93.

________ is the ordinary legal day that begins at midnight and ends at midnight.

a)

Civil day

b)

Solar day

c)

Business day

d)

Calendar day

94.

________ is a radially symmetrical animal with tentacles around its mouth.

a)

Coelenterate

b)

Annelid

c)

Arthropod

d)

Mollusk

95.

________ is the nature of an animal that makes the body temperature of the animal change and become the same as the temperature in the environment.

a)

Cold-blooded

b)

Warm-blooded

c)

Nocturnal

d)

Herbivorous

96.

________ is a viral infection characterized by clusters of small blisters.

a)

Cold sore

b)

Chickenpox

c)

Measles

d)

Wart

97.

________ is a protein that holds the muscles and organs in place and gives strength and form to the skin.

a)

Collagen

b)

Hemoglobin

c)

Insulin

d)

Keratin

98.

________ is a homogeneous mixture, which at times can appear as a heterogeneous mixture.

a)

Colloid

b)

Solution

c)

Suspension

d)

Alloy

99.

________ is a bone fracture that results when a bone is crushed into several pieces.

a)

Comminuted fracture

b)

Greenstick fracture

c)

Transverse fracture

d)

Oblique fracture

100.

________ is a bone fracture that results when a broken bone goes through the skin.

a)

Compound fracture

b)

Greenstick fracture

c)

Simple fracture

d)

Comminuted fracture