Explanation

• Endocrinology is the scientific study of hormones and the endocrine system.
• It deals with glands that produce hormones to regulate body functions.
• Hormones control growth, metabolism, reproduction, and blood sugar.
• The endocrine system helps maintain the body's internal balance (homeostasis).

Additional information:

• Neurology → Study of the nervous system
• Cardiology → Study of the heart

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Explanation

• In a vacuum, both balls reach the ground at the same time because there is no air resistance.
• All objects fall with the same gravitational acceleration (9.8 m/s²).
• The mass of an object does not affect its falling speed in a vacuum.
• This principle was demonstrated by Galileo Galilei.

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Explanation

• MRI (Magnetic Resonance Imaging) is the best scan for detailed images of soft tissues, ligaments, and the brain.
• It uses strong magnets and radio waves.
• MRI provides highly detailed images of organs and soft tissues.

Additional information:

• CT Scan: Bones, internal bleeding, chest and trauma injuries
• X-ray: Broken bones, teeth, chest examination
• Ultrasound: Pregnancy and soft organs

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Explanation

• Nitrogen (N₂): 78%

Additional information:

• Oxygen (O₂): 21%
• Argon (Ar): 0.93%
• Carbon dioxide (CO₂): ~0.04%
• Other gases: ~0.03%

Last verified on 16-05-2026

Explanation

• During photosynthesis, plants absorb carbon dioxide (CO₂) from the atmosphere.
• They use carbon dioxide, water, and sunlight to prepare food (glucose).
• During this process, plants release oxygen (O₂) into the atmosphere.
• Photosynthesis mainly takes place in the chloroplasts of green leaves.

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Explanation

• If ribosomes do not function properly, protein synthesis will stop.
• Ribosomes are the site of protein synthesis in all living cells.
• Proteins are essential for growth, repair, and cell functions.
• Without proteins, the cell cannot function or survive properly.
• Ribosomes are found in both prokaryotic and eukaryotic cells.

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Explanation

• The cell wall of algae is chiefly composed of cellulose.
• Cellulose provides strength and support to algal cells.
• Different groups of algae may also contain pectin, alginates, agar, or silica.

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Explanation

• CT Scan provides cross-sectional (slice) images of both bones and soft tissues using multiple X-ray images.
• It is commonly used in complex trauma, internal bleeding, fractures, and organ injuries.
• CT stands for Computed Tomography.
• Inventor: Sir Godfrey Hounsfield (1972)

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Explanation

• X-ray is the first and most commonly used imaging test to identify a bone fracture.
• It is quick, widely available, and cost-effective.
• Most broken bones can be diagnosed with an X-ray.

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Explanation

• Alkynes → Triple bond (C≡C)
• Example of an alkyne: Ethyne (Acetylene, C₂H₂)

Additional information:

• Alkanes → Single bond (C–C)
• Alkenes → Double bond (C=C)

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