SCIENCE
CIRCULATORY SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
Carries oxygem
|
|
Manufactured in bone marrow
|
|
Carries CO2
|
|
Contains haemoglobin in the nucleus
|
Detailed explanation-1: -So, the correct answer is ‘Erythrocytes/RBCs are the least abundant of all the cells in blood’
Detailed explanation-2: -Losing the nucleus enables the red blood cell to contain more oxygen-carrying hemoglobin, thus enabling more oxygen to be transported in the blood and boosting our metabolism. Scientists have struggled to understand the mechanism by which maturing red blood cells eject their nuclei.
Detailed explanation-3: -Answer and Explanation: The correct answer is (3) Erythrocytes lack a nucleus. Erythrocytes are red blood cells (RBCs). Mature and circulating RBCs do NOT have a nucleus.
Detailed explanation-4: -Option b is the correct answer. Haemoglobin has higher affinity with oxygen and carbon monoxide but not with carbon dioxide.