Biology Previous year question Of Human System - I For NDA
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Previous year question Of Human System - I For NDA

Previous year question Of Human System - I

Previous year question
Q 2714201159

Kidney secretes an enzyme, which changes plasma protein angiotensinogen into angiotensin. The enqme is
NDA Paper 2 2017
(A)

Renin

(B)

Nitrogenase

(C)

Hydrolase

(D)

Mono-roxygenase

Solution:

Correct Answer is `=>` (A) Renin
Q 2754412354

Colour Vision in human eyes is the function of photo receptor cells named.
NDA Paper 2 2017
(A)

Rods

(B)

Cones

(C)

Blind spot

(D)

Fovea

Solution:

Correct Answer is `=>` (B) Cones
Q 2764412355

Which one of the following statements is NOT correct?
NDA Paper 2 2017
(A)

All proteins are enzymes

(B)

Mostly enzymes are proteins

(C)

All fats are energy rich compouilds

(D)

Glucose is a common carbohydrate

Solution:

Correct Answer is `=>` (A) All proteins are enzymes
Q 2316091870

Presbyopia is a visual defect caused by
NDA Paper 2 2013
(A)

elongation of the eye ball

(B)

shortened curvature of the eye lens

(C)

weakening of the ciliary muscles

(D)

gradually increasing flexibility of the eye lens

Solution:

Presbyopia is a condition where, with age. the eye
exhibits a progressively diminished ability to focus on near
objects. It is caused by weakening of the ciliary muscles (the
muscles that bend and straighten the lens).
Correct Answer is `=>` (C) weakening of the ciliary muscles
Q 2346091873

Which one among the following substances is never excreted out through urine under normal circumstances in any healthy individual'?
NDA Paper 2 2013
(A)

Urea

(B)

Sodium

(C)

Amino acid

(D)

Potassium

Solution:

Amino acid is never excreted out through urine under normal circumstances in any healthy individual. In producing urine, the kidney excrete wastes such as urea and ammonium and they are responsible for the re-absorption of water, glucose and amino acids.
Correct Answer is `=>` (C) Amino acid
Q 2336191972

The main thinking part of the brain is
NDA Paper 2 2013
(A)

midbrain

(B)

hypothalamus

(C)

forebrain

(D)

hindbrain

Solution:

The brain is made up of three elements-the forebrain,
the midbrain and the hindbrain. The forebrain, also called the
prosenoepllalon, is the upper 'thinking' brain and has two main
parts, the telencephalon (embryonic structure from which mature
cerebrwm develops) and the diencephalon.
Correct Answer is `=>` (C) forebrain
Q 2376191976

Magnetic Resonance Imaging (MRI) is used in medical diagnosis to obtain images of our internal body organs. This is primarily possible because.
NDA Paper 2 2013
(A)

Our body possesses a permanent magnet

(B)

MRI uses an external magnet to generate a magnetic field in our body

(C)

MRI uses an external electric field to generate magnetic field in our body

(D)

ions motion along our nerve cells generates magnetic fields

Solution:

MRI stands for Magnetic Resonance Imaging. An ion current is a weak current travelling along the nerve cells in our body. The electrical impulses carried by our nerves produces a weak magnetic field, especially in the heart and brain. This helps in obtaining images of heart, brain and other organs. Analysis of these images helps in the diagnosis of disorders & staging of diseases.
Correct Answer is `=>` (D) ions motion along our nerve cells generates magnetic fields
Q 2316191979

The complete digestion of carbohydrates, proteins and fats occurs in.
NDA Paper 2 2013
(A)

Stomach

(B)

Liver

(C)

Small intestine

(D)

Large intestine

Solution:

The complete digestion of carbohydrates, proteins and fats occur in small intestine by the action of pancreatic lamylace; proenzyms trypsinogen, chymo trypsinogen & procarboxy peptidase and enzyme elastase; pancreatic lipase rospectively. Small intestine has three parts, Duodenum, Jejunum and Ileum.
Correct Answer is `=>` (C) Small intestine
Q 2367401385

The following questions consist of two statements, Statement I and Statement II. You are to examine these two statements carefully and select the answers to these questions using the codes given below.
NDA Paper 2 2012
Solution:

When red blood cells are placed in pure water, water rapidly enters the cells by en do osmosis and causes the cells to burst, a phenomenon known as 'hemolysis'
Correct Answer is `=>` (A)
Q 2347501483

Which one among the following parts of blood carries out the function of body defence'?
NDA Paper 2 2012
(A)

Platelets

(B)

White blood cells

(C)

Haemoglobin

(D)

Red blood cells

Solution:

White blood cells or leukocytes are the cells of immune system involved in defending the body against both infectious disease and foreign materials. Five different and diverse types of leukocytes exist. but they are all produced and derived from a multipotent cell in the bone marrow known as a 'hematopoietic stem cell'. They live for about three to four days in the average human body. Leukocytes are found throughout the body, including the blood and lymphatic system.
Correct Answer is `=>` (B) White blood cells
Q 2317601580

Which one among the following statements is correct? In digestive system of living organisms
NDA Paper 2 2012
(A)

glucose is broken down into glycerol

(B)

glucose is converted into glycogen

(C)

glucose is broken down into carbon dioxide and water

(D)

proteim; are brol

Solution:

Digestion is the mechanical and chemical breakdown of food into smaller components Ill at are more easily absorbed into a blood stream, for instance. Digestion is a form of catabolism--a breakdown of large food molecules to smaller ones. Proteins are converted to dipeptides in the presence of trypsin which are further converted to amino acids by dipeptidases.
Correct Answer is `=>` (D) proteim; are brol
Q 2317601589

Sickle-cell anaemia is a disease caused due to the abnormality in
NDA Paper 2 2012
(A)

white blood cells

(B)

red blood .cells

(C)

thrombocytes

(D)

blood plasma composition

Solution:

Sickle cell anaemia is a genetic disorder, caused by an abnormal type of haemoglobin called haemoglobin-S. It changes the shape of RBCs, especially when the cells are exposed to low oxygen levels. The RBCs become crescents or sickle shaped.
Correct Answer is `=>` (B) red blood .cells
Q 2347701683

Consider the following statements Hypermetropia is a defect of vision in which
1 . a person cannot see the distant objects clearly.
2. a person cannot see the near objects clearly.
3. the near point of the eye gets shifted away from the normal position.
4. the far point of the eye gets shifted towards the eye.
which of the statements given above are correct?
NDA Paper 2 2012
(A)

1 and 3

(B)

2 and 4

(C)

1 and 4

(D)

2 and 3

Solution:

Hypermetropia is where image of nearby object is formed behind the retina. This could be because the cornea doest repract elight enough. A person sees well for distance but near vision is difficult and causes strain. Hence hypermetropic people are called long-sighted.
Correct Answer is `=>` (D) 2 and 3
Q 2317801780

Which one among the following statement is correct?
NDA Paper 2 2012
(A)

All arteries carry oxygenated blood

(B)

All veins carry oxygenated blood

(C)

Except the pulmonary artery, all other arteries carry oxygenated blood

(D)

Except the pulmonary vein, all other veins carry oxygenated blood

Solution:

All the arteries carry oxygenated blood except the pulmonary artery which carries deoxygenated blood from the right atrain to lungs.
Correct Answer is `=>` (D) Except the pulmonary vein, all other veins carry oxygenated blood
Q 2387801787

Which one among t;he following statement regarding heart sound is correct?
NDA Paper 2 2011
(A)

Heart sounds are caused by the internal blood flow inside the heart

(B)

Heart sounds are caused by the external blood flow outside the heart

(C)

Heart sounds· are caused by opening and closing of heart valves

(D)

Normal sounds are called murmurs

Solution:

The beating heart produces characteristic sounds called heart sound due to opening and closing of heart valves. The first sound commonly called 'dub' is caused by closure of bicuspid and tricuspid valves. While the second sound 'dup' is caused by closure of seminar valves.
Correct Answer is `=>` (C) Heart sounds· are caused by opening and closing of heart valves
Q 2317001880

The following questions consist of two Statements, Statement I and Statement II. You are to examine these two statements carefully and select the answer to these items using the codes given below.
NDA Paper 2 2011
Solution:

In myopia, power of the eye lens increases, thus here image does not form on the retina but in the front of it. The myopia affected person uses concave lens of suitable focal length, so that now image starts to form at retina.
Correct Answer is `=>` (A)
Q 2387001887

Which one among the following statements about stomach is not correct?
NDA Paper 2 2011
(A)

Stomach acts as a temporary reservoir

(B)

Stomach mixes food with gastric juice

(C)

Stomach secretes lipase and amylase in gastric juice

(D)

Rate of stomach emptying depends on the type of food

Solution:

Stomach stores food tor some time. It churns and break up food and mixes the piece with gastric juice. Peptic cells of gastric glands in stomach secrete gastric amylase and gastric lipase.
Correct Answer is `=>` (D) Rate of stomach emptying depends on the type of food
Q 2307001888

Which one of the following organs breaks fat to produce cholesterol?
NDA Paper 2 2011
(A)

Intestine

(B)

Liver

(C)

Lungs

(D)

Kidneys

Solution:

Cholesterol is a precursor to bile acids and steroid hormones. The main organ that synthesis es cholesterol is liver. It is not an essential nutrient and can be made in the body from simple compounds via acetyl Co-A.
Correct Answer is `=>` (B) Liver
Q 2317101980

An individual whose blood type is B may in an emergency donate blood to a person whose blood type is
NDA Paper 2 2011
(A)

B or A

(B)

AB or A

(C)

A or O

(D)

AB or B

Solution:

Blood group AB is called universal accept or while blood group O is universal donor. So, the individual with blood group B can donate blood to AB and B group individual.
Correct Answer is `=>` (D) AB or B
Q 2317001889

Human stomach produces acid 'X' which helps in digestion of food. Acid 'X' is.
NDA Paper 2 2011
(A)

Acetic acid

(B)

Methanoic acid

(C)

Hydrochloric acid

(D)

Citric acid

Solution:

Hydrochloric acid is secreted in stomach. It maintains a strongly acidic pH (1.8- 3.7) in the stomach, kills bacteria and other harmful organisms and converted proenzymes to active enzyme for digestion of food.
Correct Answer is `=>` (C) Hydrochloric acid
Q 2377101986

Based on the following table. match List I with List II, List III and List IV and select the correct answer using the code given below.
NDA Paper 2 2010
(A)

List I-1 , List II-A, List III-III, List IV-ii

(B)

List I-7 , List II-B, List III-IV, List IV-v

(C)

List I-6 , List II-A, List III-III, List IV-ii

(D)

List I-2 , List II-G, List III-IV, List IV-v

Solution:

Excretory system is composed of two kidneys in human. Each kidney have structural and functional unit, the nephron. This system is for filtration of body wastes.
Correct Answer is `=>` (D) List I-2 , List II-G, List III-IV, List IV-v
Q 2307101988

Based on the following table. match List I with List II, List III and List IV and select the correct answer using the code given below.
NDA Paper 2 2010
(A)

List I-3 , List II-C, List III-VI, List IV-vi

(B)

List I-1 , List II-D, List III-V, List IV-iii

(C)

List I-2 , List II-C, List III-VII, List IV-vi

(D)

List I-5 , List II-D, List III-IV, List IV-vii

Solution:

Intestine is a part of alimentary canal. The villi are finger-like projections in small intestine which helps in absorption of nutrients..
Correct Answer is `=>` (A) List I-3 , List II-C, List III-VI, List IV-vi
Q 2317112080

Based on the following table. match List I with List II, List III and List IV and select the correct answer using the code given below.
NDA Paper 2 2010
(A)

List I-1 , List II-E, List III-I, List IV-i

(B)

List I-2 , List II-F, List III-I, List IV-iv

(C)

List I-4 , List II-E, List III-IV, List IV-iii

(D)

List I-4 , List II-F, List III-I, List IV-iv

Solution:

Skeletal system is composed of bone and cartilage. Bone contains matrix and support and protect the body frame.
Correct Answer is `=>` (C) List I-4 , List II-E, List III-IV, List IV-iii
Q 2367112085

Which part of brain controls fine movement, maintains balance and equilibrium of the body and muscle tone in a human being?
NDA Paper 2 2010
(A)

Cerebrum

(B)

Thalamus

(C)

Cerebellum

(D)

Hypothalamus

Solution:

Cerebellum is the part of vertebrate brain which is concerned with the coordination and regulation of muscle activity and maintenance of muscle tone and balance.
Correct Answer is `=>` (C) Cerebellum
Q 2307212188

Among the following elements, which one is essential for the transmission of impulses in the nerve fibre?
NDA Paper 2 2010
(A)

Calcium

(B)

Iron

(C)

Sodium

(D)

Zinc

Solution:

Sodium ions (`Na ^+`) chloride ions (`Cl^- `) and potassium ions (`K^ +`) are essential for the transmission of impulses in the nerve fibre.
Correct Answer is `=>` (C) Sodium
Q 2347412383

Jaundice in human beings is the result of
NDA Paper 2 2009
(A)

Incomplete metabolism of biliverdin

(B)

Complete metabolism of biliverdin

(C)

Incomplete metabolism of bilirubin

(D)

Complete metabolism of bilirubin

Solution:

Bilirubin is a bile pigment and is a breakdown product
of haemoglobin. It is metabolised and excreted as stereo
bilinogen in faeces or urochrome in urine. When a pathological
process interferes with the normal functioning and metabolism of
bilirubin (i.e., incomplete metabolism occurs), jaundice may be
the result.
Correct Answer is `=>` (C) Incomplete metabolism of bilirubin
Q 2387412387

Which of the following regions/cells in the human body is involved in controlling blood sugar level'?
NDA Paper 2 2009
(A)

Pituitary gland

(B)

Islets of Langerhans

(C)

Hypothalamus

(D)

Spleen

Solution:

`alpha` and `beta`-cells of Islets of Langerhans in pancreas secrete hormones glucagon and insulin respectively. Secretion of glucagon increases the blood glucose level while secretion of insulin decreases the blood glucose level. Thus, these hormones play an important role in the homeostasis of blood sugar levels.
Correct Answer is `=>` (B) Islets of Langerhans
Q 2347512483

Which of the following are the possible blood groups of the offspring of the parents with blood group O and AB?
NDA Paper 2 2009
(A)

O, A, B and AB

(B)

A and B

(C)

A, B and AB

(D)

O and AB

Solution:

The possible blood groups of the offspring of the parents with blood group O and AB will be A and B. Thus, offspring will be of blood group A and B.
Correct Answer is `=>` (B) A and B
Q 2387512487

Which one of the following is not an enzyme?
NDA Paper 2 2009
(A)

Amylase

(B)

Pepsin

(C)

Somatotrophin

(D)

Trypsin

Solution:

Somatotrophin is a hormone, Secreted by the mammalian pituitary gland, that stimulates protein synthesis and growth of the long bones in the legs and arms. It also promotes the breakdown and use of fats as an energy source, rather than glucose.
Correct Answer is `=>` (C) Somatotrophin
Q 2387712687

The wounds of face bleed profusely because
NDA Paper 2 2009
(A)

Of its rich vascularity

(B)

It is close to tile heart

(C)

Its skin is soft

(D)

Of fast contraction of facial muscle

Solution:

Tile wound of face bleed profusely because of rich
blood supply, i.e., due to it's rich vascularity.
Correct Answer is `=>` (A) Of its rich vascularity
Q 2367812785

Due to accumulation of which following, joggers experience pain muscles after running?
NDA Paper 2 2008
(A)

Lactic acid

(B)

Acetic acid

(C)

Malic acid

(D)

Citric acid

Solution:

A muscle is able to contract for a short time in the absence of oxygen. But it gets fatigued in the absence of oxygen, the metabolic products of glycolysis mainly lactic acid accumulates around it. This accumulation leads to muscle fatigue, clue to which, joggers experience pain in their leg muscles after running
Correct Answer is `=>` (A) Lactic acid
Q 2387012887

Stem Cell Therapy (SCT) is not useful for the treatment of which one of the following ailments?
NDA Paper 2 2008
(A)

Kidney failure

(B)

Cancer

(C)

Brain injury

(D)

Vision impairment

Solution:

Stern cell is not differentiated itself but can undergo unlimited division to form other cells, which either remain as stern cells or differentiated to form specialized cells. Cultures of such cells or stern cell therapy have the potential to provide replacement tissues and organs for medical use, including transplantation. It can not be used in vision impairment.
Correct Answer is `=>` (D) Vision impairment
Q 2337123082

A typical human rib cage consists of how many ribs?


NDA Paper 2 2008
(A)

12

(B)

14

(C)

16

(D)

24

Solution:

The ribs are curved bars. which movably articulate with the thoracic vertebrate at the back and with the sternum in front, all collectively forming a bony cage, the thoracic basket. There are 12 pairs (or 24 ribs) in a typical human rib cage.
Correct Answer is `=>` (D) 24
Q 2367223185

In human body which one among the following is the largest in size?
NDA Paper 2 2008
(A)

Thyroid

(B)

liver

(C)

Pancreas

(D)

Spleen

Solution:

In human body liver is the largest in size. It is heaviest gland in the body. It functions as a store house for blood glycogen and regulates blood-volume.
Correct Answer is `=>` (B) liver
 
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