Explanation

The loudness of a sound depends on the Amplitude of the vibration

 Loudness is proportional to the square of the amplitude

if the amplitude is increased by three times, the loudness also increases by nine times.

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ND4-12-2022

Explanation

• Breathing consists of two phases.
• The first phase is the inspiration phase.
• Inspiration allows air to flow into the lungs.
• The second phase is the expiration
  

Explanation

Vitamin C, also known as ascorbic acid, is necessary for the growth, development and repair of all body tissues.

Amla is also a good source of Vitamin C.

Explanation

• Heparin and Histamine are produced by:  Basophils
• ***
• During allergic reactions, basophils release two enzymes, histamine, and heparin
• ***
• Histamine, Serotonin, and Heparin are secreted by Mast Cells during allergic and inflammation reactions.
• Mast Cell is also known as Mastocyte or Labrocyte.

Explanation

• Biological factors (genetics, brain chemistry)
• Psychological factors (stress, trauma, mental health issues)
• Social/environmental factors (peer pressure, family environment, availability of drugs)

Explanation

The liver performs a relevant FUNCTION in retaining blood glucose levels.

Following intake of food, extra glucose may be saved in the liver as glycogen .

This is inspired by insulin release.

Explanation

Sir Alexander Fleming noticed that a mold called Penicillium notatum accidentally grew in one of his petri dishes and killed the surrounding Staphylococcus bacteria

Penicillin was discovered by Alexander Flaming In 1928.

Penicillin was the first true antibiotic.

The first patient Albert Alexander, a 43-year-old policeman, was treated with penicillin on 12 February 1941.

Alexander Flaming determined that penicillin had an antibacterial effect and published his findings in 1929.

Explanation

Fibrin is actively formed on the surface of activated platelets.

Explanation

Independent assortment of genes and their corresponding traits was first observed by Gregor Mendel in 1865 during his studies of genetics in pea plants.

Explanation

• Rice is not a good source of nutritional calcium.
• Rice: Low in calcium (about 1–10 mg/100 g).
• Ragi (Finger Millet): Containing roughly 344–364 mg per 100g.
• Skimmed Milk: About 120 mg/100 ml.
• Egg: About 25–30 mg per large egg; most calcium is in the yolk.

Last updated: 27 OCT 2026