The heart of the human embryo starts beating in the _____ week of its development.

A. second

B. third

C. fourth

D. first

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Memory is the responsibility of
  2. The normal temperature of human body on the Kelvin scale is
  3. Blood clotting requires vitamin
  4. Foal' is the young on of the
  5. The counting of RBCs is done with
  6. Haemophilia is a hereditary disease carried by
  7. Eye is an organ that can be called as
  8. Phenylketonuria is an example of an inborn error of metabolism. Thins error refers to
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  10. Heart is made up of
  11. Typhoid is a disease caused by
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  14. Pacemaker is the
  15. Fledgling is a term often used to denote the young one of a
  16. The blood of cockroach shows the following characteristics except one. Mark it.
  17. Veins carry blood
  18. What is the colour of the outer portion of the spinal cord?
  19. The waste product In the urine of man is
  20. An inherited characteristic which does not appear in one generation but can appear in the next is called
  21. Hormones are carried from their place of production by
  22. Xerophthalmia is a deficiency disease. Deficiency of _________ causes it.
  23. The animal that excretes uric acid
  24. Which organism probably arrived first in the world?
  25. Green plants In the sea are useful for respiration of flash because they
  26. The pathogenic organisms of an infected person are destroyed by the action of
  27. Clotting of blood is
  28. Blood plasma from which fibrinogen is removed is known as
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