Biology Practice Question and Answer

Q:

Penicillin is obtained from? 

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  • 1
    Algae
    Correct
    Wrong
  • 2
    Fungus
    Correct
    Wrong
  • 3
    Yeast
    Correct
    Wrong
  • 4
    Lichen
    Correct
    Wrong
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Answer : 2. "Fungus "
Explanation :

Penicillin is obtained from fungi, specifically a group of molds known as Penicillium. The discovery of penicillin, one of the first widely used antibiotics, is credited to Sir Alexander Fleming in 1928. Fleming observed that the mold Penicillium notatum produced a substance that could inhibit the growth of bacteria. This substance was later named penicillin and became a groundbreaking antibiotic in the field of medicine, revolutionizing the treatment of bacterial infections. Therefore, the correct answer is (B) Fungus.

Q:

Which of the following are the sweetest sugars? 

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  • 1
    Fructose
    Correct
    Wrong
  • 2
    Maltose
    Correct
    Wrong
  • 3
    Sucrose
    Correct
    Wrong
  • 4
    Glucose
    Correct
    Wrong
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Answer : 1. "Fructose "
Explanation :

Fructose is often regarded as the sweetest sugar among the options provided. It is a natural sugar found in fruits, honey, and some vegetables. Fructose is sweeter than glucose, sucrose (which is a combination of glucose and fructose), and maltose. Due to its high sweetness level, fructose is commonly used as a sweetener in various food products and beverages.

Q:

The_______is at its largest in children, but with the onset of puberty, it eventually shrinks and gets replaced by fat.

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  • 1
    Parathyroid gland
    Correct
    Wrong
  • 2
    Thymus
    Correct
    Wrong
  • 3
    Hypothalamus
    Correct
    Wrong
  • 4
    Pituitary gland
    Correct
    Wrong
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Answer : 2. "Thymus"
Explanation :

1. It is at its greatest in children.

2. With puberty, it eventually shrinks and is replaced by fat.

3. It produces and secretes thymosin, an essential hormone for T cell development and production.

4. Thymus gland is a small organ located under the breast bone in the upper chest.

5. It produces white blood cells, called lymphocytes, which protect the body from infection.

Q:

Which of the following is a root ? 

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  • 1
    Potato
    Correct
    Wrong
  • 2
    Onion
    Correct
    Wrong
  • 3
    Carrot
    Correct
    Wrong
  • 4
    ginger
    Correct
    Wrong
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Answer : 3. "Carrot "
Explanation :

Yams, beets, parsnips, turnips, rutabagas, carrots, yuca, kohlrabi, onions, garlic, celery root (or celeriac), horseradish, daikon, turmeric, jicama, Jerusalem artichokes, radishes, and ginger are all considered roots. Because root vegetables grow underground, they absorb a great amount of nutrients from the soil.

Q:

The upper part of the respiratory tract is provided with small hair-like structures called ______.

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  • 1
    bronchi
    Correct
    Wrong
  • 2
    cilia
    Correct
    Wrong
  • 3
    villi
    Correct
    Wrong
  • 4
    alveoli
    Correct
    Wrong
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Answer : 2. "cilia"
Explanation :

Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose. Inhaled air is moistened, warmed, and cleansed by the tissue that lines the nasal cavity.


Q:

The size of the pupil of the eye is controlled by the ______.

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  • 1
    blind spot
    Correct
    Wrong
  • 2
    retina
    Correct
    Wrong
  • 3
    cornea
    Correct
    Wrong
  • 4
    iris
    Correct
    Wrong
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Answer : 4. "iris"
Explanation :

1. The iris controls the amount of light entering the eye.

2. Iris is the colored part of the eye, which provides pigment to the eyes.

3. It is attached to the ciliary muscle, which contracts and expands to accommodate the required amount of light.

Q:

Deficiency of which of the following vitamins causes excessive bleeding from wounds?

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  • 1
    Vitamin D
    Correct
    Wrong
  • 2
    Vitamin E
    Correct
    Wrong
  • 3
    Vitamin A
    Correct
    Wrong
  • 4
    Vitamin K
    Correct
    Wrong
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Answer : 4. "Vitamin K"
Explanation :

1. Vitamin K deficiency causes excessive bleeding from wounds.

2. If there is deficiency of Vitamin K in your body then you can easily get injury marks on your body or skin.

Q:

Which of the following options is correct regarding sexually transmitted disease (STD)?

Statement A: Sexually transmitted diseases (STD) are infections transmitted from an infected person to an uninfected person through sexual contact.
Statement B: HIV, HPV and Hepatitis B virus is responsible for STD.

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  • 1
    Both Statements A and B incorrect
    Correct
    Wrong
  • 2
    Only Statement B is correct
    Correct
    Wrong
  • 3
    Both Statements A and B correct
    Correct
    Wrong
  • 4
    Only Statement A is correct
    Correct
    Wrong
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Answer : 3. "Both Statements A and B correct"
Explanation :

This is a correct statement regarding sexually transmitted diseases (STD).

Statement A: Sexually transmitted diseases (STD) are infections transmitted from an infected person to an uninfected person through sexual contact.

Statement B: HIV, HPV and Hepatitis B virus is responsible for STD.

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