Q. What type of tissue is responsible for the contraction of the heart?
A.
Epithelial
B.
Connective
C.
Muscle
D.
Nervous
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Solution
Cardiac muscle tissue is responsible for the contraction of the heart.
Correct Answer:
C
— Muscle
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Q. Which blood type is known as the universal donor?
A.
Type A
B.
Type B
C.
Type AB
D.
Type O
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Solution
Type O is known as the universal donor because it can be given to any blood type.
Correct Answer:
D
— Type O
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Q. Which condition is characterized by hearing loss due to damage to the inner ear or auditory nerve?
A.
Conductive hearing loss
B.
Sensorineural hearing loss
C.
Mixed hearing loss
D.
Central auditory processing disorder
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Solution
Sensorineural hearing loss occurs due to damage to the inner ear or the auditory nerve.
Correct Answer:
B
— Sensorineural hearing loss
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Q. Which measure of central tendency is most affected by extreme values?
A.
Mean
B.
Median
C.
Mode
D.
Range
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Solution
The mean is most affected by extreme values because it takes all values into account.
Correct Answer:
A
— Mean
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Q. Which muscle type is primarily responsible for voluntary motion?
A.
Cardiac muscle
B.
Smooth muscle
C.
Skeletal muscle
D.
Connective tissue
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Solution
Skeletal muscle is the type of muscle that is under voluntary control and is responsible for movement.
Correct Answer:
C
— Skeletal muscle
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Q. Which nutrient is most efficient in providing energy per gram?
A.
Carbohydrates
B.
Proteins
C.
Fats
D.
Vitamins
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Solution
Fats provide the most energy per gram, yielding approximately 9 calories per gram, compared to carbohydrates and proteins, which provide about 4 calories per gram.
Correct Answer:
C
— Fats
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Q. Which of the following activities would require the most energy expenditure?
A.
Sitting quietly
B.
Walking at a moderate pace
C.
Running a marathon
D.
Sleeping
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Solution
Running a marathon requires significantly more energy expenditure compared to sitting, walking, or sleeping due to the high intensity and duration of the activity.
Correct Answer:
C
— Running a marathon
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Q. Which of the following has the highest kinetic energy?
A.
Solid
B.
Liquid
C.
Gas
D.
All are equal
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Solution
Gases have the highest kinetic energy due to the rapid movement of their particles.
Correct Answer:
C
— Gas
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Q. Which of the following is a diatomic molecule?
A.
O2
B.
H2O
C.
CO2
D.
NaCl
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Solution
O2 (oxygen) is a diatomic molecule, consisting of two oxygen atoms.
Correct Answer:
A
— O2
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Q. Which of the following is a direct result of energy imbalance in the body?
A.
Weight maintenance
B.
Weight loss
C.
Weight gain
D.
Improved muscle tone
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Solution
An energy imbalance, where energy intake exceeds energy expenditure, leads to weight gain.
Correct Answer:
C
— Weight gain
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Q. Which of the following is a factor of the polynomial x^2 - 5x + 6?
A.
x - 2
B.
x - 3
C.
x + 2
D.
x + 3
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Solution
x^2 - 5x + 6 = (x - 2)(x - 3). So, x - 3 is a factor.
Correct Answer:
B
— x - 3
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Q. Which of the following is a homogeneous mixture?
A.
Sand and salt
B.
Oil and water
C.
Air
D.
Cereal in milk
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Solution
Air is a homogeneous mixture as its composition is uniform throughout.
Correct Answer:
C
— Air
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Q. Which of the following is a molecule made of two or more different elements?
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Solution
H2O (water) is a molecule made of two different elements: hydrogen and oxygen.
Correct Answer:
B
— H2O
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Q. Which of the following is a neutral particle in an atom?
A.
Proton
B.
Electron
C.
Neutron
D.
Ion
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Solution
A neutron is a neutral particle in an atom.
Correct Answer:
C
— Neutron
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Q. Which of the following is a pure substance?
A.
Air
B.
Saltwater
C.
Gold
D.
Milk
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Solution
Gold is a pure substance as it consists of only one type of atom.
Correct Answer:
C
— Gold
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Q. Which of the following is an example of a colloid?
A.
Saltwater
B.
Sugar solution
C.
Milk
D.
Air
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Solution
Milk is a colloid as it contains tiny particles suspended in liquid.
Correct Answer:
C
— Milk
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Q. Which of the following is an example of a gas?
A.
Ice
B.
Water
C.
Oxygen
D.
Mercury
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Solution
Oxygen is a gas at room temperature, while the others are solids or liquids.
Correct Answer:
C
— Oxygen
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Q. Which of the following is NOT a characteristic of a pure substance?
A.
Fixed melting point
B.
Fixed boiling point
C.
Variable composition
D.
Homogeneous
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Solution
A pure substance has a fixed composition, while a mixture has a variable composition.
Correct Answer:
C
— Variable composition
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Q. Which of the following is NOT a characteristic of liquids?
A.
Definite volume
B.
Definite shape
C.
Incompressible
D.
Fluidity
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Solution
Liquids have a definite volume but take the shape of their container, so they do not have a definite shape.
Correct Answer:
B
— Definite shape
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Q. Which of the following is NOT a function of the cell membrane?
A.
Protection
B.
Transport
C.
Energy production
D.
Communication
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Solution
Energy production is not a function of the cell membrane.
Correct Answer:
C
— Energy production
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Q. Which of the following is the binary representation of the hexadecimal number A?
A.
1010
B.
1001
C.
1100
D.
1110
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Solution
The binary representation of the hexadecimal number A is 1010.
Correct Answer:
A
— 1010
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Q. Which of the following is the correct binary addition of 1011 and 1101?
A.
11000
B.
10100
C.
10010
D.
11110
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Solution
The binary addition of 1011 and 1101 is 11000.
Correct Answer:
A
— 11000
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Q. Which of the following is the correct binary subtraction of 1010 from 1100?
A.
0010
B.
0100
C.
1000
D.
1100
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Solution
The binary subtraction of 1010 from 1100 is 0010.
Correct Answer:
A
— 0010
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Q. Which of the following is the hexadecimal equivalent of the binary number 1111?
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Solution
The hexadecimal equivalent of the binary number 1111 is F.
Correct Answer:
A
— F
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Q. Which of the following methods can be used to separate a mixture of sand and salt?
A.
Filtration
B.
Evaporation
C.
Distillation
D.
Both Filtration and Evaporation
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Solution
Filtration can separate sand from saltwater, and evaporation can recover salt from the solution.
Correct Answer:
D
— Both Filtration and Evaporation
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Q. Which of the following represents an ionic bond?
A.
NaCl
B.
H2O
C.
CO2
D.
O2
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Solution
NaCl (sodium chloride) represents an ionic bond formed between sodium and chlorine.
Correct Answer:
A
— NaCl
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Q. Which of the following triangles is congruent to a triangle with sides 5 cm, 12 cm, and 13 cm?
A.
5 cm, 12 cm, 14 cm
B.
6 cm, 8 cm, 10 cm
C.
5 cm, 12 cm, 13 cm
D.
7 cm, 24 cm, 25 cm
Show solution
Solution
Two triangles are congruent if they have the same side lengths. The triangle with sides 5 cm, 12 cm, and 13 cm is congruent to itself.
Correct Answer:
C
— 5 cm, 12 cm, 13 cm
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Q. Which organelle is known as the powerhouse of the cell?
A.
Nucleus
B.
Ribosome
C.
Mitochondria
D.
Endoplasmic Reticulum
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Solution
Mitochondria are known as the powerhouse of the cell because they produce energy.
Correct Answer:
C
— Mitochondria
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Q. Which part of the brain is primarily involved in planning and executing movement?
A.
Cerebellum
B.
Brainstem
C.
Motor cortex
D.
Thalamus
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Solution
The motor cortex is responsible for planning, controlling, and executing voluntary movements.
Correct Answer:
C
— Motor cortex
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Q. Which part of the ear is responsible for balance?
A.
Cochlea
B.
Eustachian tube
C.
Semicircular canals
D.
Auditory nerve
Show solution
Solution
The semicircular canals are responsible for maintaining balance and spatial orientation.
Correct Answer:
C
— Semicircular canals
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