Biology Topic-6


Topic-6

Biology

 

1. Name the animal in which anaerobic respiration is found ?- Roundworm

2. What is formed when the incomplete oxidation of substances is there ? Carbon Di Oxide and Alcohol

3. Which acid is produced due to anaerobic respiration ?-Lactic Acid

4. What is the normal breathing rate in the human beings ?-18-20 breaths per minute

5. Transportation of Oxygen is taken by which substance of human body ?-  Haemoglobin

6. How much carbon dioxide is transported in the Haemoglobin ?- 10-20%

7. What is the nature of respiration ?

·       Catalytic

·       It reduces weight of the body.

8. What is the small flap of cartilage that is present over Larynx or voice box or Adam’s Apple ?- Epiglottis

9. In which animal true vocal cord is absent ?-Hippopotamus

10. What is the total lung capacity of humans ?- 6000 ml

11. Which system provides useful material to the human body and removes the waste from the body ?-Circulatory System

12. What are the constituents of Circulatory System ?- Heart , Blood Vessels and Blood

13. What are the chambers of heart called that receive blood from the human body ?- Auricles

14. What are the chambers of heart called that pump blood to the human body ?- Ventricles

15. What are the thin two layered sac around the human heart is called ?-Pericardium

16. How many chambers are there in the heart of human beings ?-Four (Two Auricles and Two Ventricles )

17. How many heart chambers are there in fishes ?-Two (One Auricle and One Ventricle )

18. How many chambers of heart are there in amphibians ?- Three

19. How many chambers are there in the heart of crocodile , birds and mammals ?- Four (Two Auricle and Two Ventricle)

20. Heart of which class is structurally three chambered but functionally four chambered ( i.e. incomplete four chambered ) ?- Reptilian except in crocodile

21. What is the weight of the heart of the new born baby ?-20 gms

22. What is the average weight of the heart in men ?- 280-340 gms

23. What is the average weight of the heart in women ?- 230-280 gms

24. What is the name given to the pain in the heart ?- Angina

25. What is the contraction of the heart called ? – Systole

26. What is the relaxation of the heart called ?- Diastole

27. What is the sound of systole and diastole called ?- Lub and Dub

28. Which vessels in the heart carry the pure blood ?- Arteries

29. Which vessels in the heart carry the impure blood ?- Veins

30. What is the name of the node in the human heart that is the basis of the myogenic heart beat (i.e. initiated by a patch of modified hear muscle itself without requiring an external stimulation)? – Sino-auricular Node or SA Node or Pacemaker

31. What are Capillaries ?

·       They are the thinnest blood vessels.

·       They connect arteries to the veins.

·       They help in exchange of materials like the nutrients , gases , waste products etc,. between blood and cells.

32. What is the other name of the Red Blood Cells ?- Erythrocytes

33. What are the features of the Red Blood Cells ?-

·       They contain the blood haemoglobin .

·       They distribute oxygen.

·       They are the most abundant cells.

·       Mature RBC’s lack a nucleus and organelles.

·       In camel and Llama RBC’s are nucleated.

34. What are the coagulating elements  in Plasma ? – Fibrinogen and Prothrombin

35. Which unit measures the blood pressure ?- Sphygmomanometer

36. What is the upper reading of the blood pressure called ? – Systolic

37. What is the lower reading of the blood pressure called ?-Diastolic

38. List the factors that affect the blood pressure :

I. Age

II. Cardiac Output

III. Total Peripheral Resistance

39. What is the other name of the White Blood Cells ?- Leukocytes

40. What are the features of the White Blood Cells ?

·       They are the part of the immune system of the body.

·       They destroy and remove the aberrant cells and cellular debris .

·       They attack against infectious agents and foreign substances.

·       They are much less in number than RBC’s ( 1 : 600 )

41. What is the other name of Platelets ?- Thrombocytes

42. What are the features of the Platelets ?

·       It is responsible for blood clotting (Coaugulation ).

·       It changes fibrinogen into fibrin.

43. What is the condition of the persistent high blood pressure called ? – Hypertension.

44. What is the condition of  the persistent low blood pressure called ?- Hypotension

45. Which instrument is used to check the working of heart ?- Electrocardiograph (ECG)

46. What does the human skeletal system include ?- Ligament , Tendon , Muscles, Cartilage

47. How many bones are there in the Axial Skeleton System ?- 80 Bones

48. Which bones are there in the Axial Skeleton System ? – Skull, Vertebral Column and Bones of Chest

49. How many bones are there in the Appendicular Skeleton System ?- 126 Bones 

50. What is the major function of the Appendicular Skeleton System ? – To make locomotion possible and to protect the major organs of locomotion, digestion, excretion and reproduction.

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