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.
Fire can not burn without oxygen
The difference between them is that an ecosystem is a community of organisms and their environment. And a biosphere is all the living organisms.
Answer: Lysosomes
Explanation:
Lysosomes is the type of organelles which contain enzymes that breaks down the various fatty acids. As, these enzymes basically work in the less oxygen areas and the low PH region. The peroxisomes absorbed all the nutrient from the cell and they are degraded from the sub-cellular structure.
The lysosomes is the single membrane that contain the digestive enzymes for breaking all the toxic material such as fatty acids, ethanol and hydrogen peroxide in cells.
