Biology Practice Question and Answer
8 Q: Penicillin is obtained from?
1247 05ee21737e9ea010382e59adc
5ee21737e9ea010382e59adc- 1Algaefalse
- 2Fungustrue
- 3Yeastfalse
- 4Lichenfalse
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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?
1008 05ee215faef054905196ff7d9
5ee215faef054905196ff7d9- 1Fructosetrue
- 2Maltosefalse
- 3Sucrosefalse
- 4Glucosefalse
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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.
499 06411b5303218fd8d14928dd3
6411b5303218fd8d14928dd3- 1Parathyroid glandfalse
- 2Thymustrue
- 3Hypothalamusfalse
- 4Pituitary glandfalse
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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 ?
581 0626696b0e1e2a840c333c6c4
626696b0e1e2a840c333c6c4- 1Potatofalse
- 2Onionfalse
- 3Carrottrue
- 4gingerfalse
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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 ______.
452 06438fb531ce944a93ea183c3
6438fb531ce944a93ea183c3- 1bronchifalse
- 2ciliatrue
- 3villifalse
- 4alveolifalse
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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 ______.
559 064c396e0a4dbfb486bcf64f8
64c396e0a4dbfb486bcf64f8- 1blind spotfalse
- 2retinafalse
- 3corneafalse
- 4iristrue
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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?
556 064c3953ea4dbfb486bcf6178
64c3953ea4dbfb486bcf6178- 1Vitamin Dfalse
- 2Vitamin Efalse
- 3Vitamin Afalse
- 4Vitamin Ktrue
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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.
643 064c38fdb9e9013486a7a0b78
64c38fdb9e9013486a7a0b78Statement B: HIV, HPV and Hepatitis B virus is responsible for STD.
- 1Both Statements A and B incorrectfalse
- 2Only Statement B is correctfalse
- 3Both Statements A and B correcttrue
- 4Only Statement A is correctfalse
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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.