1. Consider the following statements about B group Vitamins:
- Most of them are organic acids
- Most of them are water soluble
- Most of them are synthesized in the body
Which of the above statements is / are correct?
[A] Only 1 and 3
[B] Only 2
[C] Only 1 & 2
[D] 1, 2 & 3
Show Answer
Correct Answer: B [Only 2]
Notes:
B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism. This is the correct statement as most of the B Vitamins are water-soluble. They are not primarily organic acids nor are they mostly synthesized in the body. They’re found in highest abundance in meat, and dietary supplements containing all eight are referred to as a vitamin B complex, which indicates that they’re more often ingested rather than synthesized.
2. In which among the following parts of the Alimentary Canal, the Rennin enzyme is secreted?
[A] Stomach
[B] Mouth
[C] Pancreas
[D] Duodenum
Show Answer
Correct Answer: A [Stomach]
Notes:
Rennin which is also known as Chymosin, is a proteolytic enzyme related to pepsin that is synthesized by chief cells in the stomach of some animals. Its role in digestion is to curdle or coagulate milk in the stomach.
3. Which among the following is / are correct regarding a mature sperm and ovum?
[A] They both are of approximately same size
[B] They both have equal number of Chromosomes
[C] They both contain flagella
[D] None of the above
Show Answer
Correct Answer: B [They both have equal number of Chromosomes]
Notes:
The number of chromosomes is reduced from 46 (23 pairs) to 23 during the process of meiosis. In a human egg or sperm, there are 23 chromosomes, one of which is an X or Y. A human egg is haploid (has 23 chromosomes) and a sperm is haploid (has 23 chromosomes).
4. The blood pressure is denoted as following?
[A] Systolic Pressure / Diastolic Pressure
[B] Diastolic Pressure / Systolic Pressure
[C] Venous Pressure / Systolic Pressure
[D] Systolic Pressure / Pulse Pressure
Show Answer
Correct Answer: A [Systolic Pressure / Diastolic Pressure]
Notes:
Blood Pressure is expressed in two numbers. The higher number is known as Systolic Pressure, or the amount of force (as measured in millimetres of mercury) that is exerted against the artery walls during a heartbeat (contraction). The lower number in the Diastolic pressure, which does the force exist while the heart is resting between beats.
5. Cobalt is a component of which of the following Vitamins?
[A] Vitamin A
[B] Vitamin D
[C] Vitamin E
[D] Vitamin B12
Show Answer
Correct Answer: D [Vitamin B12]
Notes:
Cobalt is a component of Vitamin B12. Vitamin B12 is also known as also known as cobalamin, is an important water-soluble vitamin which is used in the production of red blood cells and DNA.
6. Who among the following is best known for his discovery and development of the first safe and effective polio vaccine.?
[A] Jonas Salk
[B] David Bodian
[C] Almroth Wright
[D] Albert Sabin
Show Answer
Correct Answer: A [Jonas Salk]
Notes:
Jonas Edward Salk was an American virologist and medical researcher who developed one of the first successful polio vaccines. He announced on a national radio show that he has successfully tested a vaccine against polio.
7. Who among the following were awarded Nobel Prize in 1958 for One Gene One Enzyme Concept?
[A] Landsteiner & Weiner
[B] Avery, Mccleod and mc Carthy
[C] Jacob & Wollman
[D] George Beadle and Edward Tatum
Show Answer
Correct Answer: D [George Beadle and Edward Tatum]
Notes:
George W. Beadle (1903-1989) and Edward L. Tatum (1909-1975) show how genes direct the synthesis of enzymes that control metabolic processes. George Beadle and Edward Tatum were awarded Nobel Prize in 1958 for One Gene One Enzyme Concept.
8. Which among the following have a ‘mixed heart’ ,that is the heart in which the oxygenated and the deoxygenated blood is mixed?
[A] Birds
[B] Fishes
[C] Reptiles
[D] Nematodes
Show Answer
Correct Answer: C [Reptiles]
Notes:
Reptiles and Amphibians have a mixed heart.
9. With reference to classification of the animals, which among the following groups represents Elasmobranchs?
[A] Shark, Skates and Rays
[B] Shark, Rays and Dolphins
[C] Shark, Skates and Dolphins
[D] Skates, Dolphins and Rays
Show Answer
Correct Answer: A [ Shark, Skates and Rays]
Notes:
The term Elasmobranches is a collective name for the sharks, skates and rays. Elasmobranches have a skeleton made of cartilage, no swim bladders and rough skin made up of small dermal dentils. Elasmobranches are renowned for their highly tuned senses.
10. Which of the following drug is an antihistamine?
[A] Dimetapp
[B] Seldane
[C] Cetrizine
[D] All of the above
Show Answer
Correct Answer: D [ All of the above]
Notes:
All of the above belongs to a class of drugs known as antihistamines. They interfere with the natural action of histamine by competing with histamine for binding sites of receptor where histamine exerts its effect.
