Biology (Part-III) (UPSC)

Total Questions: 50

41. Consider the following statements with reference to the human body: [2006]

1. The common bile duct releases its contents into stomach.

2. The pancreatic duct releases its contents into duodenum.

Which of the statements given above is / are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

Correct Answer: (b) 2 only

Solution:Bile duct and pancreatic duct both releases its contents into duodenum. The digestive enzyme (pancreatic juices) releases to duodenum from pancreatic duct.

42. Which one among the nutritional calcium? [2006]

(a) Rice
(b) Ragi
(c) Skimmed milk
(d) Egg

Correct Answer: (a) Rice

Solution:Rice is not a good source of calcium.

Milk, yogurt, and cheese are rich natural sources of calcium. Most grains do not have high amounts of calcium unless they are fortified. However, they contribute to calcium intakes, even though they contain small amounts of calcium, because people consume them frequently.

43. Consider the following statements: [2006]

1. Caffeine, a constituent of tea and coffee is a diuretic.

2. Citric acid is used in soft drinks.

3. Ascorbic acid is essential for formation of bones and teeth.

4. Citric acid is a good substitution ascorbic acid in our nutrition.

Which of the statements given above are correct?

(a) 1 and 2 only
(b) 1,2 and 3 only
(c) 3 and 4 only
(d) 1, 2, 3 and 4

Correct Answer: (d) 1, 2, 3 and 4

Solution:Caffeine is most commonly consumed by humans in infusions extracted from the bean of the coffee plant and the leaves of the tea bush, as well as from various foods and drinks containing products derived from the kola nut. Acids are added to soft drinks for extra bite and mouth feel. The primary acid used in colas is phosphoric acid, while the one used in citrus flavoured drinks is usually citric acid. Citric acid is a good substitution of ascorbic acid as per nutritional value.

44. Consider the following statements: [2006]

1. ELISA test is employed as the first and most basic test for an individual to detect cancer.

2. Almost 50% of human beings have Rh+ blood while the remaining have Rh-blood.

Which of the statement(s) given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

Correct Answer: (d) Neither 1 nor 2

45. What is the name of the vessel that delivers the nutrient/rich blood from the stomach and small intestine to the liver? [2006]

(a) Left hepatic artery
(b) Hepatic vein
(c) Right hepatic artery
(d) Hepatic portal vein

Correct Answer: (d) Hepatic portal vein

Solution:Hepatic portal vein deliver the nutrient rich blood from the stomach and small intestine to the liver. It is the largest gland in the body.

The hepatic portal vein supplies 75% of the blood to the liver, while the hepatic arteries supply the remaining 25%.

46. Which one of the following pairs is not correctly matched? [2006]

List-I (Recent Scientific Achievement)	List-II (Country)
(a) Creating the world first mouse with a full human chromosome	U. K
(b) Cloning a human embryo for the first time	Germany
(c) Guiding a spacecraft for collision with a comet	U.S.A.
(d) Landing a spacecraft on an asteroid	Japan

Correct Answer: (b)

Solution:Cloning a human embryo for the first time took place in U.SA. Cloning is a process when identical types of progenies are produced from one individual.

47. Consider the following statements: [2006]

1. Meningococcal Meningitis is transmitted from person to person by mosquito bites.

2. Vomiting and neck pain are two of the symptoms of Meningococcal Meningitis.

Which of the statement(s) given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

Correct Answer: (b) 2 only

Solution:Meningococcal meningitis is transmitted from person to person through cough and having a body contact on a regular basis. It is called droplet transmission.

48. Robert Webster is known for his work associated with which one of the following? [2007]

(a) Cardiology
(b) Influenza virus
(c) HIV/AIDS
(d) Alzheimer

Correct Answer: (b) Influenza virus

Solution:Robert Webster is a scientist, his interests include the structure and function of influenza virus proteins and development of new vaccines and antivirals.

49. In the human body, which structure is the appendix attached to? [2007]

(a) The large intestine
(b) The small intestine
(c) The gall bladder
(d) The stomach

Correct Answer: (a) The large intestine

Solution:Appendix is attached to the first portion of large intestine. The appendix has no function in modern human.

50. In human body, which one of the following hormones regulates blood calcium and phosphate? [2007]

(a) Glucagon
(b) Growth hormone
(c) Parathyroid hormone
(d) Thyroxine

Correct Answer: (c) Parathyroid hormone

Solution:Parathyroid hormone secrets from parathyroid gland. This hormone regulates calcium and phosphate level in blood. Parathyroid hormone raises the level of calcium in the blood and decreases the level of phosphorous in the blood.

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