Which one of the following statements regarding haemoglobin is correct?
A. Haemoglobin present in RBC can carry only oxygen but not carbon dioxide
B. Haemoglobin of RBC can carry both oxygen and carbon dioxide
C. Haemoglobin of RBC can carry only carbon dioxide
D. Haemoglobin is only used for blood clotting and not for carrying gases
Answer: Option B
Solution(By Examveda Team)
During respiration, about 97% of oxygen is transported by Red Blood Cells in blood and the remaining 3% gets dissolved in the plasma.Around 20-25% of carbon dioxide is carried by haemoglobin as carbamino-haemoglobin.Oxygen enters the blood from the lungs and carbon dioxide is expelled out of the blood into the lungs. The blood serves to transport both gases. Oxygen is carried to the cells. Carbon dioxide is carried away from the cells.
This Question Belongs to General Knowledge >> Biology
Ordinary table salt is sodium chloride. What is baking soda?
A. Potassium chloride
B. Potassium carbonate
C. Potassium hydroxide
D. Sodium bicarbonate
A. hole in ozone layer
B. decrease in the ozone layer in troposphere
C. decrease in thickness of ozone layer in stratosphere
D. increase in the thickness of ozone layer in troposphere
A. angiosperms
B. gymnosperms
C. monocotyledons
D. dicotyledons
Pollination is best defined as
A. transfer of pollen from anther to stigma
B. germination of pollen grains
C. growth of pollen tube in ovule
D. visiting flowers by insects
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