31. Which of the following test is used to diagnose Roundworm Infection?
[A] Widal Test
[B] Pap smear’s Test
[C] Gravidex Test
[D] Stool Test
Show Answer
Correct Answer: D [Stool Test]
Notes:
Stool Test is used to diagnose Roundworm Infection.
32. Which of the following is an example of nonsense mutation?
[A] Sickle cell anaemia
[B] Cystic fibrosis
[C] Opitz-Kaveggia syndrome
[D] None of these
Show Answer
Correct Answer: B [Cystic fibrosis]
Notes:
Cystic fibrosis is an example of nonsense mutation. While Sickle cell anemia is an example of missense mutation.
33. A process where new combinations of alleles are formed is called?
[A] Genetic Drift
[B] Mutation
[C] Genetic Recombination
[D] Natural selection
Show Answer
Correct Answer: C [Genetic Recombination]
Notes:
A process where new combinations of alleles are formed is called Genetic Recombination.
34. Biofortification is a ____:
[A] Method of plant breeding for disease resistance
[B] Method of developing resistance to insect pests
[C] Method of breeding crops to increase their nutritional value
[D] Strategy to combat unwanted nutrients in plants
Show Answer
Correct Answer: C [Method of breeding crops to increase their nutritional value]
Notes:
Biofortification is the breeding crops to increase their nutritional value. This can be done either through conventional selective breeding or genetic engineering. Biofortification differs from ordinary fortification because it focuses on making plant foods more nutritious as the plants are growing, rather than having nutrients added to the foods when they are being processed.
35. Which of the following protein is found in nails?
[A] Keratin
[B] Histone
[C] Actin
[D] Elastin
Show Answer
Correct Answer: A [Keratin]
Notes:
Keratin is a family of fibrous structural proteins that is the key structural component of hair and nails. It is also the key structural material making up the outer layer of human skin. Besides, it provides the necessary strength and toughness for masticatory organs, such as the tongue.
36. Morphology of Chromosomes can be best studied at ___:
[A] Interphase
[B] Prophase
[C] Metaphase
[D] Zygotene
Show Answer
Correct Answer: C [Metaphase]
Notes:
The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed state (25 times of orginal size) and become thicker and well arranged.
37. The animals in which the body cavity is absent are known as ____:
[A] Wild
[B] Coelomates
[C] Pseudocoelomates
[D] Acoelomates
Show Answer
Correct Answer: D [Acoelomates]
Notes:
Animals that have a cavity between body wall and digestive tract are known as coelomates for e.g.. annelids, molluscs, arthropods, Echinodermata, and chordates etc. In contrast, animals in which the body cavity is absent are known as acoelomates. Platyhelminthes is an example of acoelomates. The presence or absence of body cavity or coelom plays a very important role in the classification of animals.
38. Oxygenated blood is carried by _____:
[A] Hepatic portal vein
[B] Renal vein
[C] Pulmonary artery
[D] Pulmonary vein
Show Answer
Correct Answer: D [Pulmonary vein]
Notes:
The pulmonary veins drain oxygenated blood from the lungs to the left atrium. A small amount of blood is also drained from the lungs by the bronchial veins. There are typically four pulmonary veins, two draining each lung. The pulmonary veins are part of the pulmonary circulation.
39. Water flows of f the wings of birds and insects due- to the presence of ____:
[A] Proteins
[B] Waxes
[C] Minerals
[D] Sugars
Show Answer
Correct Answer: B [Waxes]
Notes:
Insects and birds have the simplest surface waxes that serve to water proof feathers. The interlocking feather barbs and a special waxy coating create a shield that water runs off of. Besides, while a few components present in surface lipids can prevent growth of pathogens, the total surface with waxed layer certainly functions to prevent microbial entry into the organism.
40. Animal protein is called first class protein because it is _____:
[A] Rich in essential amino acids
[B] d
Delicious in taste
[C] Cheaper in the market
[D] Easily digestible
Show Answer
Correct Answer: A [Rich in essential amino acids]
Notes:
Proteins from animals are called ‘first class’ proteins – they provide all the essential amino acids, including those that the body can’t make. Proteins from plants are ‘second class’ proteins.
