31. Which of the following are examples of harmful microbes?
[A] Streptococcus Pyogenes
[B] Escherichia Coli
[C] Pseudomonas Aeruginosa
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Streptococcus Pyogenes, Escherichia Coli, and Pseudomonas Aeruginosaare examples of harmful microbes. They can be transmitted through a variety of mediums in our bodies.
32. Which of the following ringworm is also called Tinea barbae?
[A] Ringworm of Scalp
[B] Ringworm of Beard
[C] Ringworm of Body
[D] Ringworm of Groin
Show Answer
Correct Answer: B [Ringworm of Beard]
Notes:
The ringworm of Beard is also called Tinea barbae. This is a superficial fungal infection of the skin, hair, and hair follicles caused by dermatophytes.
33. Which of the following are the benefits of vermicomposting?
[A] develops roots of the plants
[B] increases the fertility and water-resistance of the soil
[C] Both 1 and 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: C [Both 1 and 2]
Notes:
The benefits of vermicomposting are to develop roots of the plants, improve the physical structure of the soil, and increase the fertility and water-resistance of the soil.
34. Which of the following is divalent cations are usually used to make competent cells?
[A] Carbon
[B] Nitrogen
[C] Copper
[D] Calcium
Show Answer
Correct Answer: D [Calcium]
Notes:
Calcium is divalent cations that are usually used to make competent cells.
35. _____ is the study of the microanatomy of cells, tissues and organs as seen through a microscope:
[A] Entomology
[B] Paleontology
[C] Histology
[D] Lchthyology
Show Answer
Correct Answer: C [Histology]
Notes:
Histology is the study of the micro anatomy of cells, tissues, and organs as seen through a microscope. It examines the correlation between structure and fun-ction.Histology is the micro-scopic counterpart to gross anatomy which looks at larger structures visible without a microscope.
36. Blood is a connective tissue embedded in which type of intercellular matrix?
[A] Jelly like
[B] Fluid
[C] Dense
[D] None of the above
Show Answer
Correct Answer: B [Fluid]
Notes:
Blood is a fluid connective tissue. It has two components: cells and fluid matrix in which it is embedded. The liquid matrix is known as the plasma, in which blood cells are present. Blood travels all around the body in specialized blood vessels.
37. Which of the following statements is not correct regarding the ‘Bombay blood group’?
[A] It is deficient in expressing H antigen
[B] It has neither A nor B antigen
[C] It was first discovered in 1952 by Dr. Y.M. Bhende
[D] A person with this blood group may receive blood only from a person with O blood group
Show Answer
Correct Answer: D [A person with this blood group may receive blood only from a person with O blood group]
Notes:
Hh or the Bombay blood group, is a rare blood type. This blood phenotype was first discovered in Bombay, now known as Mumbai, by Dr. Y. M. Bhende in 1952. It is mostly found in South Asia (India, Bangladesh, Pakistan) and parts of Middle East such as Iran. Individuals with the rare Bombay phenotype (hh) do not express H antigen (also called substance H), the antigen which is present in blood group O. For this reason people who have Bombay phenotype can donate red blood cells to any member of the ABO blood group system but they cannot receive blood from any member of the ABO blood group system but only from other people who have Bombay phenotype.
38. “Slipper animalcule” is the common name for ___:
[A] Paramecium
[B] Trypanosoma
[C] Monocystis
[D] Plasmodium
Show Answer
Correct Answer: A [Paramecium]
Notes:
“Animalcule” is a old term for a microorganism first used by Anton Van Leeuwenhoek means “small animal”. A paramecium is shaped somewhat like a slipper (a soft shoe), so it is called the slipper animalcule. Other better-known animalcules include: Amoeba, called Proteus animalcule etc.
39. The red, orange and yellow colours of leaf is due to ____:
[A] Aldehydes
[B] Tannis
[C] Carotenoid
[D] Lignins
Show Answer
Correct Answer: C [Carotenoid]
Notes:
The red, orange and yellow colours of leaf are due to carotenoids contained in chromoplasts. When the green chlorophyll in leaves diminishes, the yellow pigments that already exist become dominant and give their color to the leaves.
40. Deficiency of ____ causes rickets disease:
[A] Vitamin A
[B] Vitamin B
[C] Vitamin C
[D] Vitamin D
Show Answer
Correct Answer: D [Vitamin D]
Notes:
Rickets is the softening and weakening of bones in children, usually because of an extreme and prolonged vitamin D deficiency. Vitamin D is needed for the metabolism of calcium and phosphorus in the body, which, in turn affects how calcium is deposited in the bones; thus it is considered essential for proper bone development and growth.
