11. Which of the following type of Kidneys is found in an adult frog?
[A] Pronephric
[B] Metanephric
[C] Mesonephric
[D] None of these
Show Answer
Correct Answer: C [ Mesonephric ]
Notes:
Mesonephros is permanent kidney of frog and most fish, developing posterior to and replacing the pronephros of the embryonic and larval stages. It is a paired organ consisting of a set of nephrons having capsules that filter blood from the glomerulus and tubules whose cells reabsorb water and nutrients and secrete nitrogenous wastes.
12. Dehydration in human body is caused due to the deficiency of which of the following?
[A] Water
[B] Hormones
[C] Vitamin
[D] Salt
Show Answer
Correct Answer: A [Water]
Notes:
Dehydration is a deficiency of water in thebody. Vomiting, diarrhea, excessive sweating, burns, kidney failure, and use of diuretics maycause dehydration. People feel thirsty, and asdehydration worsens, they may sweat less and excrete less urine.
13. Which among the following carries impure blood to human heart?
[A] Pulmonary vein
[B] Vena Cava
[C] Aorta
[D] Pulmonary arteries
Show Answer
Correct Answer: D [Pulmonary arteries]
Notes:
The pulmonary artery carries impure blood to the right and left lungs. The left half of the heart collects and pumps pure (oxygenated) blood from the lungs to all parts of the body.
14. Who among the following devised the Technique IVF(In vitro Fertilization)?
[A] Robert Edwards
[B] Dr. Martin Cooper
[C] Edward Jenner
[D] Sir Frank Whittle
Show Answer
Correct Answer: A [Robert Edwards]
Notes:
The early influences on Robert Edwards’ approach to the scientific research that led to human IVF are described. He founded the first IVF programme for infertile patients and trained other scientists in their techniques.
15. In how many parts is the human brain divided?
[A] 2
[B] 4
[C] 3
[D] 5
Show Answer
Correct Answer: C [3]
Notes:
The brain has three main parts: the cerebrum, cerebellum and brainstem. Cerebrum: is the largest part of the brain and is composed of right and left hemispheres.
16. In typhoid which of the following drugs is administered? (UPSC Prelims 1983)
[A] Chloromycetin
[B] Penicillin
[C] Sulphonamide
[D] Tetracycline
Show Answer
Correct Answer: A [Chloromycetin]
Notes:
Chloromycetin or Chloramphenicol is the drug of choice in the treatment of this disease. It has been the antibiotic of choice for patients with typhoid fever for more than 30 years, although ampicillin and cotrimoxazole are also used.
17. Camel uses its hump for which of the following purposes? (UPSC Prelims 1993)
[A] Storing water
[B] storing fat
[C] balancing the body during walking in desert sand
[D] temperature regulation
Show Answer
Correct Answer: B [storing fat]
Notes:
A camel’s hump does not hold water at all – it actually stores fat. The camel uses it as nourishment when food is scarce. If a camel uses the fat inside the hump, the hump will become limp and droop down. The hump is not used for water storage, but camels can go for long periods of time without water.
18. In which of the following Alpha-keratin, a protein is present? (UPSC Prelims 2002)
[A] Blood
[B] skin
[C] wool
[D] eggs
Show Answer
Correct Answer: B [skin]
Notes:
Alpha-keratin, or α-keratin, is a type of keratin found in vertebrates. This protein is the primary component in hairs, horns, mammalian claws, nails and the epidermis layer of the skin. α-keratin is a fibrous structural protein, meaning it is made up of amino acids that form a repeating secondary structure.
19. In which organ of the human body are the lymphocyte cells formed? (UPSC Prelims 2004)
[A] Liver
[B] Long bone
[C] Pancreas
[D] Spleen
Show Answer
Correct Answer: B [Long bone]
Notes:
Lymphocytes are the cells that determine the specificity of the immune response to infectious microorganisms and other foreign substances. In humans lymphocytes make up 25 to 33% of the total number of leukocytes. They are found in central lymphoid organs and tissues such as the spleen, tonsils and lymph nodes and large bones.
20. Which branch of medicine deals with the scientific study of the structure of teeth and diseases associated with it?
[A] Virology
[B] Opthalmology
[C] Cosmology
[D] Odontology
Show Answer
Correct Answer: D [Odontology]
Notes:
Odontology is a branch of medicine which deals with the structure and diseases related to the teeth.
