Q1 of 95 Page 81

Name the following:

Any two organelles absent in mature RBCs.

Any two organelles absent in mature RBCs are nucleus and mitochondria.

Explanation: absence of nucleus provides the RBC’s its biconcave structure thus increasing their surface area to absorb more oxygen. The absence of mitochondria means the RBC won’t be able to utilize the oxygen for it thus increases transportation efficiency.


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1

Name the following:

The yellow coloured fluid part of the blood.

 1

Name the following:

The respiratory pigment contained in RBCs.

 1

Name the following:

The process of WBCs squeezing out through the walls of the blood capillaries.

 2

Mention the following:

(i) Average life span of RBCs.


(ii) Range if RBCs per mm3 in a normal adult human female.


(iii) The two major categories of WBCs.


(iv) Blood cells involved in leukemia.