Answer:
The correct answer is - option B. They are small because they lack a nucleus.
Explanation:
Red blood cells or erythrocytes are specialized cell that produce in bone marrow and have specific role such as carrying oxygen from lungs to deliver it to the various organs and carry out carbon dioxide.
In mammals these cells lack cell organelles such as nucleus and mitochondria, a major factor that determined its smaller size. The size of RBC are move through narrow vessels throughout a organism because of its specific size and shape that provide it space for hemoglobin and allow to be flexible and bend to move through narrow vessels.
Thus, the correct answer is : option B. They are small because they lack a nucleus.
The beginning should be about why you are explaining the difference and what you are comparing, make sure to include the prompt. The first middle should include the pros and cons of star bursts and all about star bursts. The second middle should be about mr. good bar, and the third middle should be about them both toghether like seeing which ones better. Then in the end just conclude it and state which one is better.
This is true a theory is an explanation of observable facts and phenomena.
The answer is 1 in 11
- Ashley :)