Q. Which of the following is a strong acid?
A.
Acetic acid
B.
Hydrochloric acid
C.
Citric acid
D.
Carbonic acid
Show solution
Solution
Hydrochloric acid (HCl) is a strong acid that completely dissociates in water.
Correct Answer:
B
— Hydrochloric acid
Learn More →
Q. Which of the following is a type of genetic mutation?
A.
Deletion
B.
Insertion
C.
Substitution
D.
All of the above
Show solution
Solution
All of the above are types of genetic mutations that can alter the DNA sequence.
Correct Answer:
D
— All of the above
Learn More →
Q. Which of the following is an example of an aromatic compound?
A.
Cyclohexane
B.
Benzene
C.
Ethylene
D.
Propylene
Show solution
Solution
Benzene is an aromatic compound characterized by its ring structure and delocalized electrons.
Correct Answer:
B
— Benzene
Learn More →
Q. Which of the following is NOT a factor that can affect evolution?
A.
Mutation
B.
Natural Selection
C.
Environmental Change
D.
Genetic Stability
Show solution
Solution
Genetic stability does not affect evolution; rather, mutations, natural selection, and environmental changes drive evolutionary processes.
Correct Answer:
D
— Genetic Stability
Learn More →
Q. Which of the following is the correct identity for sin²(θ) + cos²(θ)?
A.
1
B.
0
C.
sin(θ)
D.
cos(θ)
Show solution
Solution
sin²(θ) + cos²(θ) = 1
Correct Answer:
A
— 1
Learn More →
Q. Which of the following salts is formed from a strong acid and a weak base?
A.
NaCl
B.
NH4Cl
C.
K2SO4
D.
CaCO3
Show solution
Solution
NH4Cl is formed from the strong acid HCl and the weak base NH3.
Correct Answer:
B
— NH4Cl
Learn More →
Q. Which organ is primarily responsible for filtering blood?
A.
Liver
B.
Heart
C.
Kidneys
D.
Lungs
Show solution
Solution
The kidneys are primarily responsible for filtering blood, removing waste products and excess substances to form urine.
Correct Answer:
C
— Kidneys
Learn More →
Q. Which part of the brain is involved in regulating sleep and wakefulness?
A.
Cerebellum
B.
Hypothalamus
C.
Medulla oblongata
D.
Corpus callosum
Show solution
Solution
The hypothalamus plays a crucial role in regulating sleep and wakefulness.
Correct Answer:
B
— Hypothalamus
Learn More →
Q. Which part of the cell is responsible for energy production?
A.
Nucleus
B.
Ribosome
C.
Mitochondria
D.
Endoplasmic reticulum
Show solution
Solution
Mitochondria are known as the powerhouse of the cell and are responsible for energy production through cellular respiration.
Correct Answer:
C
— Mitochondria
Learn More →
Q. Which part of the heart initiates the electrical impulse?
A.
Atrioventricular node
B.
Sinoatrial node
C.
Bundle of His
D.
Purkinje fibers
Show solution
Solution
The sinoatrial (SA) node initiates the electrical impulse that regulates the heartbeat.
Correct Answer:
B
— Sinoatrial node
Learn More →
Q. Which part of the neuron is responsible for receiving signals from other neurons?
A.
Axon
B.
Dendrite
C.
Soma
D.
Myelin sheath
Show solution
Solution
Dendrites are the parts of a neuron that receive signals from other neurons.
Correct Answer:
B
— Dendrite
Learn More →
Q. Which process describes the breakdown of glucose to produce energy?
A.
Photosynthesis
B.
Glycolysis
C.
Fermentation
D.
Respiration
Show solution
Solution
Respiration is the process that describes the breakdown of glucose to produce energy, primarily in the form of ATP.
Correct Answer:
D
— Respiration
Learn More →
Q. Which process involves the movement of water across a semipermeable membrane?
A.
Diffusion
B.
Osmosis
C.
Filtration
D.
Active transport
Show solution
Solution
Osmosis is the process that involves the movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
Correct Answer:
B
— Osmosis
Learn More →
Q. Which scientist is known for the theory of natural selection?
A.
Gregor Mendel
B.
Charles Darwin
C.
Louis Pasteur
D.
James Watson
Show solution
Solution
Charles Darwin is known for formulating the theory of natural selection, explaining how species evolve over time.
Correct Answer:
B
— Charles Darwin
Learn More →
Showing 211 to 224 of 224 (8 Pages)