Question Bank by Edumentors
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How is electricity generated in a power plant through electromagnetic induction?
Electricity is generated in power plants through electromagnetic induction when turbines rotate conductors within a magnetic field, inducing an alternating voltage. Step-by-Step Solution: Fuel (coal/gas/nuclear) heats water to create high-pressure steam Steam rotates turbines connected to coils of wire Coils spin
How does a convex lens form a real, inverted, and smaller image? Draw a ray diagram.
A convex lens forms a real, inverted, and smaller image when the object is placed beyond 2F (twice the focal length), with rays converging on the opposite side of the lens. Step-by-Step Solution: Draw three principal rays from the top of the object: - Ray 1: Parallel to principal axis → bends through focal point (F
State two differences between aerobic and anaerobic respiration.
Two key differences between aerobic and anaerobic respiration are: 1. Oxygen requirement: Aerobic requires oxygen, anaerobic occurs without oxygen 2. Energy yield: Aerobic produces more ATP (38 molecules) than anaerobic (2 ATP molecules) Step-by-Step Solution: Aerobic equation: Glucose + Oxygen → Carbon dioxide + Wa
Describe the process of osmosis.
Osmosis is the net movement of water molecules from an area of higher water concentration to an area of lower water concentration across a semi-permeable membrane. Step-by-Step Solution: Water molecules move through a semi-permeable membrane that allows water but not larger molecules to pass through Movement always
How does DNA replication ensure that cells can divide to grow or repair tissue?
DNA replication is a semi-conservative process that creates two identical DNA molecules, each containing one original and one new strand, enabling accurate cell division. Step-by-Step Solution: DNA double helix unzips when hydrogen bonds break between base pairs DNA helicase enzyme separates strands; each acts as a
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