NEET PRACTICE MCQ

EXCRETION AND NERVOUSSYSTEM-MCQ

The percentage of Sodium Chloride in human urine is

(a)    1.5%

(b)    2.6%

(c)     0.3%

(d)    0.09%

(e)     9.5%

2. Pick up the wrong pair

(a) Earthworm – Chloragogan cells

(b) Tapeworm – Flame cells

©   Prawn- green glands

(d)   Ascaris – Rennet cell

(e)    Shark- Chloride excreting cells on gills

3. Glomerulus is involved in

(a)    reabsorption of urea

(b)   Synthesis of salt

(c)    Filtration of blood

(d)   Secretion of blood

(e)    Reabsorption of salts

4. If Henle’s loop is absent in human nephron which one of the following is to be excepted?

(a)    absence of glomerular filtration

(b)   there will be no urea synthesis

(c)    more concentrated urine

(d)   more diluted urine

(e)    no change in the quality and quantity of urine

5. A terrestrial animal must be able to

(a)    excrete more water in urine

(b)   excrete more salts in urine

(c)    conserve water

(d)   conserve large amount of Na+ in blood

(e)    synthesis a large amount of urea

6. Volume of urine is regulated by

(a)    ADH and Oxytocin

(b)   ADH alone

(c)    Aldosterone

(d)   Aldosterone and ADH

(e)    Aldosterone and testosterone

7. The main site of tubular secretion involved in urine formation is

(a) Bowman’s Capsule

(b) Ascending limb                                                        

(c) Descending limb

(d) Proximal and distal convoluted tubules

(e) collecting duct

8. The Counter current mechanism of urine concentration is formed by

(a) Vasa rectae and Henle’s loop

(b) Afferent arteriole and efferent arteriole

(c) Glomerulus and Bowman’s Capsule

(d) Ascending limb and descending limb

(e) All the above

9. Diuresis means

(a) Kidney damage

(b) Loss of excess glucose in urine

(c) Elimination of excess urine

(d) Loss of excess water in urine

(e) Painful urination

10. The most toxis exeretory product is

(a) Urea

(b) CO2

 (c) Uric acid

(d) Ammonia

(e) Guanosine

11. Which one of the following statement is not related to muscular contraction ?

(a) ATP provides energy for contraction

(b) Length of ‘A’ band remains unchanged

(c) ATP in produced from creatine phosphate

(d) Anaerobic breakdown of glucose provides ATP

(e) Size of Sarcomere increases by 60-70%

12. The innermost and outermost coverings of a muscle fibre in a bundle are

(a) Sarcolemma and perimysium

(b) Endomysium and epimysium

(c) Sarcolemma and endomysium

(d) Sarcolemma and epimysium

(e) none of these

13. The upper jaw and lower jaw bones of man are

(a) Maxilla and Mandible

(b) Maxilla and Nasal

© Mandible and Vomer

(d) Maxilla and Zygomatie bone

(e) Nasal and Vomer

14. Bone formed by the ossification of Cartilage is

(a) Dermal bone

(b) Membrane bone

© Sesamoid bone

(d) Replacing bone

(e) Investing bone

15. The ear ossicles of middle ear are arranged from ear-drum to cochlea in the order of

(a) Malleus- stape s- incus

(b) Incus - malleus - stapes

© Malleus – incus - stapes

(d) Incus - stapes - incus

(e)Stapes – malleus - incus

16. In elderly persons the stiffness of joint is due to

(a) Hardening of bones

(b)Hardening of Muscles

(c) Enlargement of bones

(d) Decrease in sinuvial fluid

(e) Increase in sinuvial fluid

17. Pick up the wrong statement

(a) Each bilateral half of pelvic girdle is called Os-innominatum

(b) The smallest and largest bones in man are stapes and femur respectively

(c) Axis vertebra can be identified by its odontoid process

(d) Human vertebrae are amphiplatyan

(e) Pelvie girdle is formed by the fusion of ilium, iselium & coccyx.

18. The ratio of Na+ and K+ ions across nerve membrane is

(a) 60 : 50

 (b) 60 : 30

 (c) 15 : 10

(d) 40 : 10

(e) 60 : 20

19. A polarized neuron in the one that is

(a) Pumping K+ ions out

(b) Having action potential

(c) At resting potential

(d) An excited neuron

(e) Conducting stimulus

20. Mach the columns to get correct combinations

Column I	Column II
1. Telencephalon	P- pons varoli
2. Diencephalon	q- medulla oblongata
3. Mesencephalon	r- olfactory lobe
4. Metencephalon	s- hypothalamus
5. Myclencephalon	t- carpora quadrigemina

(a) 1=s, 2=q, 3=p, 4=t, 5=r

(b) 1=t, 2=p, 3=q, 4=r, 5=s

(c) 1=q, 2=r, 3=s, 4=t, 5=p

(d) 1=r, 2=s, 3=t, 4=p, 5=q

(e) 1=s, 2=t, 3=q, 4=r, 5=p

21. Pick up the wrong match

(a) Trigeminal – Mixed nerve

(b) Choroid plexus- blood capillaries

(c) Non-myelinated axon- Saltatory transmission

(d) Optic nerve- sensory

(e) Trochlear-motor

22. Midbrain contains

(a) Offactory lobe

(b) diencephalon

(c) Pineal body

(d) Pons varoli

(e) Corpora quadrigemina

23.Pick up the correct statement

1. Dorsal root gangion is sensory

2. Synaptic fatique is due to lack of neurotransmitters

3. Afferent nerve fibres carry impulses from CNS to receptors

4. Corpus cavernosum connects the two cerebral hemispheres

5. Nerve cell in the largest cell in an animal body

(a) 1, 2 and 4

(b) 2, 3 and 5

(c) 1, 3 and 5

(d) 2, 4 and 5

(e) 1, 2 and 5

24. The site from which the nerve impulse for hearing originates in man is

(a) Anditory meatus

(b) tympanum

(c) Pinna

(d) Anditory nerve

(e) Cochlea

25. Alcohol affects

(a) Thalamus

(b) Frontal lobe

(c) Cerebellum

(d) Medulla Oblongata

(e) Hypothalamus

26. Pick up the wrong pair

(a) Action Potential –    -70 mv

(b) Third Venticle –  Diocoel

(c) Origin of Brain– Ectoderm

(d) White matter– Myelination

(e) Appetite and satiety centre– Hypothalamus

27. Injury to vagus nerve will not affect

(a) Gastrointestinal movement

(b) Tongue movement

(c) Cardiac movement

(d) Pancreatic secretion

(e) Pulmonary ventilation

28.The lens of human eye is

(a) Biconcave

(b) Convex

(c)Concave

(d) Biconvex

(e) Convex at one side and Concave at the other

29. The defective condition of the eye in which distant objects are seen distinct but near ones are indistinct is

(a) Cataract

(b) Hypermetropia

(c) Glaucoma

(d) Myopia

(e) Presbyopia

30. Association area of the cerebral cortex

(a) Receives direct Sensory stimulus

(b) Initiates motor impulse directly

(c) Processes and interprets sensory impulse

(d) All the above

(e) None of the above.

DIGESTION AND ABSORPTION-MCQ

1.         Shinecter of oddi occurs between

a) pylorus and duodenum   b) oesophagus and stomach           

c) large intestine and small intestine                     

d) ampulla of vater and duodenum            e) none of these

2.         Castle’s intrinsic factor is necessary for the intestinal absorption of

            a) Vitamin K               b) Vitamin D              c) Vitamin C  

d) Vitamin B12          e) Vitamin B1

3.         In expiration diaphragm becomes

            a) arched        b) relaxed      c) flattened     d) remain in the same position       e) None of the above

4.         Crypts of Lieberkuhn are

a) Intestinal glands   b) In appendix                       c) Gastric glands       

d) salivary glands                  e) lacteals

5.         Payers patches are

a) lymph nodules in intestine          b) mucus cells of gastric gland       

c) gastric pits of stomach     d) milk glands                        e) none of these

6.         Surgical removal of gall bladder in man would lead to

            a) impairments of digestion b) jaundice     c) increased acidity  

            d) marasmus                         e) kwashiorkor

7.         Beauty vitamin is

            a) Vitamin K          b) Vitamin A            c) Vitamin C           d) Vitamin E

            e) Vitamin B₁

8.          Canabolic feed

            a) own species                       b) any species                        c) faecal material            d) blood

            e) fruit

9.Bile salts usually contains

a) sodium bicarbonate and sodium taurocholate b) sodium glycolate and sodium carbonate           c) sodium glycolate and sodium taurocholate                     

d) inorganic salts and sodium glycolate     e) Pottassium bicarbonate and sodium glycolite

10.Animal in which gall bladder is absent is

a) cow             b) elephant    c) horse          d) gibbon       e) man

11.  Which of the following is called the graveyard of RBC

            a) liver                        b) spleen        c) kidney        d) bone marrow        e) Thymus

12.  Chief fat digesting enzyme is found in

            a) bile             b) succus entericus   c) gastric juice                       d) pancreatic juice    e) saliva

13.  The region of alimentary canal of man where the digestion of food is completed

            a) stomach     b) mouth        c) Ileum          d) Duodenum            e) rectum

14.  The chief function of bile is to

            a) digest fats by enzymatic action   b) eumsify fats for digestion                                    c) eliminate waste products                     d) regulate digestion of proteins

            e) convert maltose to glucose

15.  Brunner’s glands are found in

a) Stomach       b) Ileum         c) Colon         d) Duodenum                   e) Rumen

16.  The fats absorbed from the gut are transported to the blood in the form of

a) Liposomes                         b) Chemomicrons     c) Chylomicrons

d) Micelles                  e) Phagocytes

17.  Which are the enzymes of gastric gland?

a) trypsin & rennin   b) pepsin & rennin    c) lipase & trypsin    

d) vasopressin & lipase        e) erepsin and lactose

           

18.  Scurvy is the disease caused by the

            a) person of RH antigen in blood    b) deficiency of vitamin E     c) a virus        d) deficiency of ascorbic acid                 e) release of histamine

19.  Stomach in vertebrates is the chief site of digestion of

            a) proteins     b) fats             c) carbohydrates       d) vitamin

            e) all of the above

20.  Hardest substance of the body is

            a) bone                       b) enamel       c) cartilage     d) connective tissue

            e) muscle

21.  Conversion of glygogen into glucose is

            a) gluconeogenesis   b) glycolysis   c) glycogenolysis       d) glycogenesis

            e) none of these

22.  Enamel of teeth is secreted by

            a) osteoblast     b) ameloblast          c) Odontoblast                       d) Dentoblast

            e) chondrioblast

23.  Argenatffin cells occur in

a) large intestine       b) stomach     c) small intestine       d) both c & b

e) pancreas

24.  In an organism utilizing carbohydrates as source of energy anaerobically, the RQ is likely to be

            a) Infinity       b) 1.0              c) 0.9               d) 0.4              e) 1

25.  Highest calorific value is found in

            a) Lipid           b) Protein       c) Glucose      d) Hexese sugar       

e) Amino acid

26.  Vermiform appendix in man is an extension of

            a) Duodenum            b) Jejunum     c) Ileum          d) Caecum      e) Colon

27.  The teeth of human beings are fastened in the sockets of jaw bone. These type belong to

            a) Bunodont  b) Thecodont c) Diphyodont           d) Heterodont           e) none

28.  Secretion of bile is promoted by

            a) CCK b) secretion   c) insulin        d) gastrin       e) endogastrin

29.  Brunner’s glands are present in

            a) stomach     b) liver                        c) small intestine       d) large intestine

            e) pancreas

30.  Anti-pellagra factor is

            a) Vit B           b) Vit B2         c) Vit B5         d) Vit B12       e) Vit C

BREATHING AND EXCHANGE OF GASES -MCQ

1.  Vocal cords present of mammals are made up of

    (a) Cartilage and muscles                   (b) Muscles only                    (c) Folds of mucous membrane

    (d) Muscles and bones                       (d) Tendon

2. Mammalian lung contains enormus number of alveoli. This is to allow

    (a) More spongy texture of lungs     (b) More nerve supply                (c) More surface area for diffusion of gases

    (d) More space for inspired air         (e) For easy exchange of oxygen

3. Which types of respiratory organs are present in spiders

    (a) Gills                 (b) Lungs               (c) Book gills                              (d) Books lungs                (e) Skin

4. The number of lobes in the right lung of rabbit is

   (a) 2 lobes              (b) 3 lobes              (c)  4 lobes                                  (d) 5 lobes                         (e) 6 lobes           

5. With effort, a person can inspire 2 or 3 litres of air in excess of his tidal volume. This volume is

    (a) Expiratory  reserve volume         (b) Inspiratory  reserve volume   © Total lung capacity             

    (d) Vital capacity                                 (e) Residual air

6. Even if there is no air in it, trachea of human does not collapse due to

    (a) Presence of chitinous rings         (b) Turgour pressure                   (c) presence of cartilaginous rings

    (d) Presence of long rings                    (e) presence of bony structures

7. Adam’s apple in man is

   (a) Catrilage in lungs                            (b)  Catrilage in trachea              (c) Thyroid catrilage in larynx

   (d) Epiglottis                                         (e) Syrinx

8. Formation of oxyhaemoglobin in lungs is affected by

    (a) Increased percentage of CO₂ in blood                                        (b)   Decreased percentage of CO₂ in blood

    © High percentage of carbon monoxide in alveolar air                          (d) all of them                    (e) none of the above

9. In which form the CO₂ is carried in the blood

   (a) Magnesium bicarbonate                 (b) Sodium carbonate                  (c) Sodium bicarbonate   

   (d) Potassium carbonate                       (e) Calcium phosphate

10. Minutes and numerous tubes leading to the lungs are called

     (a) Hilumn         (b) Bronchi                      (c) Alveoli                                 (d) Bronchioles                          (e) In fundibulum

11.Which of the following does not contribute to breathing movements in mammals

     (a) Abdominal muscles                      (b) Ribs                                        (c) larynx             

     (d) Diaphragn                                     (e) none of the above

12. Cellular respiration is different from breathing because in cellular respiration

     (a) O₂ dissociated from oxyhaemoglobin diffuses into cells

     (b) In lungs O₂ combines with haemoglobin to form oxyhaemoglobin

     © Percentage of O₂ is more in inspired air and less in expired air

    (d) CO₂, is water and energy are liberated after oxidation of glucose                                              (e) both are same

 

13. Percentage of CO₂ in expired air is

     (a) 6.9 %            (b) 3.6 %              (c) 0.24 %                                (d) 0.04 %                         (e) 21 %

14. In an organism utilizing carbohydrates as source of energy anaerobically, the R.Q. is likely to be

     (a) Infinity        (b) 1.0                     (c) 0.9                                      (d) 0.4                             (e) 1

15. Oxygen is transported to every cell of the body through

     (a)  WBC         (b) RBC                 (c) WBC and RBC                     (d) RBC and hormones     (e) Plasma

16. The exchange of gases in lung alveoli occurs by

      (a) Simple diffusion                                 (b) Active transport                        (c) passive transport  

     (d) Osmosis                                   (e) Carrier mediated transport

17.The concentration of CO₂ adversely effects the formation of haemoglobin.  This is described as

     (a) Bohr’s effect                           (b) Chloride effect                                   (c) Haldane’s effect  

     (d) Herring Breuer’s effect          (e) Hamberger phenomenon

18. Carbonic anhydrase helps in

     (a) Release excess of O₂             (b) Release excess of CO₂                        (c) Breakdown of O₂

      © Breakdown of CO₂                (d) None of the above

19. Exphysema is a condition resulting from

     (a) Drug addiction                     (b) Cigarette smoking                     (c) Liquor consumption

     (d) none of these                       (e) both b and c

20. In expiration diaphragm becomes

     (a) Arched                                   (b) Relaxed                                               (c) Flattened

     (d) Remain in the same position                                                        (e) None of these