General Science - Biology MCQs
21. Which among the following cells is capable to develop in any of the type of cell?
[A] Endothelial
[B] Endodermal
[C] Stem
[D] None of the above
Show Answer
Correct Answer: C [Stem]
Notes:
A stem cell is a cell with the unique ability to develop in any of the type of cell. In the future they may be used to replace cells and tissues that have been damaged or lost due to disease.
22. Which of the following Vitamin is essential for the formation of collagen?
[A] Vitamin A
[B] Vitamin B
[C] Vitamin C
[D] Vitamin D
Show Answer
Correct Answer: C [Vitamin C]
Notes:
Vitamin C is essential for the formation of collagen. The process of collagen synthesis occurs mainly in the cells of fibroblasts which are specialized cells with the main function of synthesizing collagen and stroma.
23. During the process of Osmosis the solvent travels from _______ ?
[A] Concentrated solution to dilute solution
[B] Dilute solution to the concentrated solution
[C] Solvent does not travel in osmosis
[D] None of the above
Show Answer
Correct Answer: A [Concentrated solution to dilute solution]
Notes:
Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a more concentrated solution into a less concentrated one making both the sides equal.
24. Consumption of a high amount of which of the following may cause cirrhosis ?
[A] Alcohol
[B] Tobacco
[C] Caffeine
[D] Soft drinks
Show Answer
Correct Answer: A [Alcohol]
Notes:
Alcoholic cirrhosis develops for between 10% and 20% of individuals who drink heavily for a decade or more
25. Which among the following is wood cellulose?
[A] Rayon
[B] Balata
[C] Cork
[D] None of the above
Show Answer
Correct Answer: A [Rayon]
Notes:
Rayon is wood cellulose. It is made from natural sources such as wood and agricultural products that are regenerated as cellulose fiber.
26. Find out the correct pairs among the below three:
- Thiamine – Beri Beri
- Vitamin D – Rickets
- Vitamin K –Sterility
Select the correct option from the codes given below:
[A] 1 only
[B] 2 only
[C] 1 & 2 only
[D] 1, 2, 3
Show Answer
Correct Answer: C [1 & 2 only]
Notes:
1 & 2 only ARE CORRECT sterility is related to Vitamin E , Vitamin K is related to Blood Coagulation
27. Which component in light causes suppression of melatonin produced by the pineal gland?
[A] Red
[B] Blue
[C] Green
[D] Indigo
Show Answer
Correct Answer: B [Blue]
Notes:
Blue component in light causes suppression of melatonin produced by the pineal gland. Melatonin regulates the sleep–wake cycle. Natural levels of melatonin in the blood are highest at night.
28. The existence of genes was first suggested by?
[A] Gregor Mendel
[B] George Wells Beadle
[C] Edward Lawrie Tatum
[D] Frederick Griffith
Show Answer
Correct Answer: A [Gregor Mendel]
Notes:
In the 19th century Heredity was poorly understood in general, and the concept of a gene did not exist at all. Gregor Mendel worked with garden pea plants to establish the concept of gene.
29. Lepidopterology is a branch of biology, which deals with the following?
[A] Ferns
[B] animals in stagnant waters
[C] Lipids and Fats
[D] Moths & Butterflies
Show Answer
Correct Answer: D [Moths & Butterflies]
Notes:
Lepidopterology is the branch of zoology which deals with the scientific study of moths and the three superfamilies of butterflies. The person who wishes to study Lepidopterology is called as lepidopterist or an aurelian.
30. The pneumatophores are negatively geotropic roots which grow upward & meant for gaseous exchange. These are a characteristic of _______?
[A] Halophytes
[B] Heliophytes
[C] Sciophytes
[D] Lithophytes
Show Answer
Correct Answer: A [Halophytes]
Notes:
A halophyte is a salt-tolerant plant that grows in soil or waters of high salinity. They consists of pneumatophores which are negatively geotropic roots which grow upward & meant for gaseous exchange.
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