31. How many types of joints are present in our body?
[A] 2
[B] 3
[C] 5
[D] 6
Show Answer
Correct Answer: B [3]
Notes:
The human body has three main types of joints.
1. synarthrosis
2. amphiarthrosis
3. diarthrosis
32. Which statement is true about Passive Immunity?
[A] This immunity causes reactions
[B] This immunity develops immediately
[C] This immunity lasts only for a few weeks or months
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Passive immunity is conferred when a person is given antibodies to a disease rather than produced through their own immune system. A newborn baby receives passive immunity from its mother through the placenta.
33. The human alimentary canal runs from the mouth to the anus and is approximately how many meters long?
[A] 4 m
[B] 15 m
[C] 9 m
[D] 1 m
Show Answer
Correct Answer: C [9 m]
Notes:
The human alimentary canal runs from the mouth to the anus and is approximately 9 meters long.
34. What diseases can we get in the large intestine?
[A] Diverticulitis
[B] Appendicitis
[C] Hemorrhoids
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Diverticulitis, Appendicitis, and Hemorrhoids are the diseases we can get in the large intestine.
35. Leber’s Hereditary Optic Atrophy is a type of __
[A] Chromosomal Disorder
[B] Multifactorial Genetic Inheritance
[C] Mitochondrial Inheritance
[D] Mendelian Disorder
Show Answer
Correct Answer: C [Mitochondrial Inheritance]
Notes:
Leber’s Hereditary Optic Atrophy is a type of Mitochondrial Inheritance that occurs due to mutations in a single gene and can be easily detected by pedigree analysis.
36. The biofertilizer present in the roots of legumes is __
[A] Anabaena
[B] Rhizobium
[C] Azospirillum
[D] All of the above
Show Answer
Correct Answer: B [Rhizobium]
Notes:
Rhizobium leguminocerium bacteria live symbiotically in the root nodules of legumes and some non-legumes. They fix atmospheric N2 and hence increase soil fertility.
37. Identification of drugs through genomic studies is called?
[A] Genomics
[B] Pharmacogenomics
[C] Pharmacogenetics
[D] Cheminformatics
Show Answer
Correct Answer: B [Pharmacogenomics]
Notes:
Identification of drugs through genomic studies is called Pharmacogenomics. Pharmacogenomics may improve health care costs and efficiency.
38. Which transgenic tomato variety has a better shelf life?
[A] Lyco 100
[B] PHB tomato
[C] Bt tomato
[D] Flavr savr
Show Answer
Correct Answer: D [Flavr savr]
Notes:
Flavr savr is a transgenic tomato variety that has a better shelf life and was the first GM food crop to be used commercially.
39. BT seed is associated with ____:
[A] Rice
[B] Cotton
[C] Wheat
[D] Oil seeds
Show Answer
Correct Answer: B [Cotton]
Notes:
Cotton is the most popular of the BT crops. In BT cotton, BT gene was isolated and transferred from a bacterium Bacillus thurigiensis to American cotton. The American cotton was subsequently crossed with Indian cotton to introduce the gene into native varieties. The BT cotton variety contains a foreign gene obtained from Bacillus thuringiensis. This bacterial gene, introduced genetically into the cotton seeds, protects the plants from bollworm (A. lepidoptora), a major pest of cotton.
40. Which of the following multiplies very slowly in comparison to others?
[A] Bacteria
[B] Fungi
[C] Virus
[D] Worms
Show Answer
Correct Answer: D [Worms]
Notes:
Viruses, bacteria and fungi multiply very quickly, while worms multiply very slowly in comparison. Taxonomically, all bacteria are closely related to each other than to viruses and vice versa.
