NEET BIOLOGY MCQ-Excretion, Osmoregulations, Skeletal system, Nervous Coordination & endocrine system

1. The chemical substance that is responsible for increasing blood pressure due to renin action is

(a) erythropoetin

 (b) aldosterone

 (c) angiotensinogen

(d) angiotensin I

(e) angiotensin II

2. Which one is likely to occur in a person suffering from Kidney failure?

(a) absence of deamination

(b) lack of ornihine cycle

(c)  proteinuria and albuminuria

(d) uremia

(e) all the above

3. Ammonia formed during protein catabolism is converted into uric acid in the liver of animals which are

(a) ammonotelic

(b) ureotelic

(c) guanotelic

(d) uricotelic

(e) ornithinotelic

4. The white solid material usually found in bird’s dropping is

(a) ammonium salt

 (b) urate

(c)uric acid

(d) guanine

(e) xanthine oxidase

5. Accumulation of crystals of uric acid in joints causes

(a) nephrits

(b) renal stone

(c) polyuria

(d) gout

 (e) albuminuria

6. The genetic disease in which homogentisic acid is exerted out with urine is

(a) haematuria

(b) glucosuria

 (c) uremia

 (d) alkaptonuria

(e) diuresis

7. Alcohol intake causes excess urination because alcohol

(a) enhances urea synthesis

(b) promotes renal filtration

(c)  mixes up with urine

(d)depresses the level of vasopression

(e) evacuate urinary bladder

8. The region of nephron impermeable to water is

(a) ascending limb of Henle’s loop

(b) proximal convoluted tubule

(c) distal convoluted tubule

(d) descending limb of Henle’s loop

(e) collecting duct

9. Glomerular filtrate usually does not contain

(a) glucose

(b) urea

(c) proteins

(d) aminoacid

(e) sodium chloride

10. The liver cells of urotelic animals essentially require the enzyme

(a) Carbonic anhydrase

(b) zymase

(c)  citric acid synthetase

(d) arginase

(e) hyaluronidase

11. Cartilaginous fishes synthesise and retain urea in blood to keep

(a) ammonotelism

(b) isotonicity

(c)  uricotelism

(d) hypertonicity

(e) hypotonicity

12. Which one of he following represents locomotary movement?

(a) beating of cilia and flagella

(b) peristatsis and cyclosis

(c)  crawling and burrowing

(d) vibrations of pinnae

(e) closing of eye lids and protrusion of tongue

13. A syncytial or multinucleate condition exists in

(a) skeletal muscle

(b) smooth muscle

(c)  cardiac muscle

(d) viscal muscle

(e) involuntary muscle

14. Each muscle cell is surrounded by a thin sheath of connective tissue called

(a) sarcolemma

(b) endomysium

(c)  perimysium

(d) epimysium

(e) none of the above

15.Sarcosomes of muscles are

(a) lysosome

(b) ribosome

(c) mitochondria

(d) Golgi bodies

(e) glycogen granules

16. In elderly persons the stiffness in joints in 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. During relaxation of muscles which one of the following does not take place?

(a) Ca++ ions are packed up by endoplasmic reticulum

(b) myosin ATPase activity is reduced

(c) Actin-myosin cross bridges are stopped

(d) repolarisation of sarcolemma by increased out flux of Na+.

(e) repolarisation of barcolemma by increased out flux of K+

18. The deltoid ridge of humerus in meant for

(a) articulation

(b) protection

(c) attachment of muscles

(d) all the above

(e) none of the above

19. Six out of the 206 bones of human skelton are confined to

(a) Wrist

(b) skull

 (c) ankle

(d) middle ear

(e) pelvic girdle

20. The depression of human skull in the area of pituitary gland is called

(a) foramen magnum

(b) foramen triosseum

(c) sella turcia

(d) sacral foramen

(e) obturator foramen

21. The muscle fatique is due to

(a) accumulation of lactic acid

(b) prolonged previous activity

(c) consumption of stored glucogen

(d) all the above

(e) none of the above

22. Which one of the following is not pertaining to pectoral girdle?

(a) scapula

(b) glenoid cavity

(c) clavicle

(d) pivot joint

(e) sinuvial joint

23. Nissle’s granules of neurons are associated with

        (a) impulse transmission

        (b) protein synthesis

        (c) elimination of wastes

        (d) phagocytosis

       (e) removal of dead cells

24. The bone that does not enter into the composition of human cranium is

(a) occipital

(b) frontal

(c) maxilla

(d) ethmoid

(e) sphenoid

25. Match columns to get correct combination

Column I	Column II
1. Collar bone	p- Patella
2. Shoulder blade	q- Femur
3. Knee cap	r- Scapula
4. Breast bone	s- Clavicle
5. Thigh bone	t- Sternum

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

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

(c)   1=t, 2=s, 3=r, 4=q, 5=p

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

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

26. If he urine of a man in tasteless, dilute and watery, he may be suffering from

(a)Oedema

(b) uremia

(c) renal stone

(d) diabetes mellitus

(e) diabetes incipidus

27. A motor impulse arriving at a neuromuscular junction generates an action potential, which causes the release of Ca++ from the sarcoplarmic reticulam, these Ca++ blind with specific sites present on

(a) myosin

 (b) tropomyosin

(c) troponin

(d) F-actin

(e) G-actin

28. The highly vascularised parts of the eye providing nourishment and oxygen to retina is

(a) Choroid

(b) ciliary body

(c) iris

(d) cornea

(e) vitreous chamber

29. The impulse received by the sensory hair cells of the organs of Corti are carried by auditory  nerve to

(a) fronal lobe

(b) temporal lobe

(c) pons varoli

         (d) parietal lobe

(e) medulla oblongata

30. Match Columns to get correct combinations

Column I	Column II
1. Trigeminal	p-absent in anamniotes
2. Auditory	q-dentist’s nerve
3. Occulomotor	r-movement of tongue
4. Spinal accessory	s-sensory nerve
5. Hypoglossal	t-movement of eye ball

           

(a)  1=s, 2=r, 3=p, 4=q, 5=t

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

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

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

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