1. The web of the spider is made up of which among the following?
[A] Carbohydrate Polymers
[B] Proteins
[C] Lipids
[D] Polysaccharides
Show Answer
Correct Answer: B [Proteins]
Notes:
Spiders use their silk to make web. Spider silk is made out of protein.
2. Which organ in herbivorous animals helps in digestion of starch through bacteria?
[A] Intestine
[B] Stomach
[C] Caecum
[D] Liver
Show Answer
Correct Answer: C [Caecum]
Notes:
The cecum or caecum is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is that organ in herbivorous animals, which helps in digestion of starch through bacteria.
3. Schizophrenia is an example of _________?
[A] Allergy
[B] Mental Illness
[C] Organic Degenerative Diseases
[D] None of the above
Show Answer
Correct Answer: B [Mental Illness]
Notes:
Schizophrenia is an example of mental illness. It is a serious mental disorder in which people interpret reality in an abnormal manner. It can result into hallucinations, delusions, and extremely disordered thinking and behavior that impairs daily functioning, and can be disabling.
4. Who among the following scientists is known for developing techniques for DNA fingerprinting and DNA profiling which are now used all over the world in forensic science to assist police detective work?
[A] Vernon Heywood
[B] Patrick Laidlaw
[C] Alec Jeffreys
[D] Heinz Wolff
Show Answer
Correct Answer: C [Alec Jeffreys]
Notes:
Alec Jeffreys scientists is known for developing techniques for DNA fingerprinting and DNA profiling which are now used all over the world in forensic science to assist police detective work.
5. Rafflesia is the plant with largest flowers and found in many parts of the South East Asia. It is a ______?
[A] Mangrove Plant
[B] Ornamental Plant
[C] Parasitic Plant
[D] Carnivorous Plant
Show Answer
Correct Answer: C [Parasitic Plant]
Notes:
Rafflesia is a genus of parasitic flowering plants in the family Rafflesiaceae. It is the plant with largest flowers and found in many parts of the South East Asia.
6. Which of the following groups of plants is known as Magnoliophyta?
[A] Gymnosperms
[B] Angiosperms
[C] Algae
[D] Bryophyte
Show Answer
Correct Answer: B [Angiosperms]
Notes:
Angiosperms are known as Magnoliophyta. Angiosperms are vascular plants which have stems, roots, and leaves.They are plants that produce flowers and bear their seeds in fruits.
7. The right portion of human heart receives which type of blood?
[A] mixed
[B] impure
[C] Pure
[D] None of these
Show Answer
Correct Answer: B [impure]
Notes:
The right portion receives blood (which is impure) from the body and pumps the same to the lungs for purification (oxygenation). The impure blood enters the heart from two large veins called the superior and inferior vena cava.
8. Which organ is associated with the production of insulin in the human body?
[A] Pancreas
[B] Liver
[C] Kidney
[D] Heart
Show Answer
Correct Answer: A [Pancreas]
Notes:
Insulin is a hormone made by an organ located behind the stomach called the pancreas. It allows body to use sugar from carbohydrates in the food. Insulin helps keep blood sugar level from getting too high (hyperglycemia) or too low (hypoglycemia).
9. Consumption of fish is considered to be healthy when compared to flesh of other animals because fish contains which of the following minerals? (UPSC Prelims 1998)
[A] Polyunsaturated fatty acids
[B] saturated fatty acids
[C] essential vitamins
[D] more carbohydrates and proteins
Show Answer
Correct Answer: A [Polyunsaturated fatty acids]
Notes:
Consumption of fish is considered to be healthy when compared to flesh of other animals because fish contains polyunsaturated fatty acids. Polyunsaturated fatty acid is an anti oxidant, which helps in building of tissues.
10. Which of the following cell organelles play the most significant role in protein synthesis? (UPSC Prelims 2001)
[A] Lysosome and Centrosome
[B] Endoplasmic reticulum and Ribosome
[C] Golgi apparatus and Mitochondria
[D] Lysosome and Mitochondria
Show Answer
Correct Answer: B [Endoplasmic reticulum and Ribosome]
Notes:
Ribosome and Endoplasmic reticulum are main site for protein synthesis. Ribosome, which serve as staging area where some RNA helps in protein synthesis. Endoplasmic reticulum is an irregular, double membrane network scattered in cytoplasm, also helps in protein synthesis.
