INTRODUCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cytoplasm can contain more chlorophyll so more carbon dioxide can be transported
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Cytoplasm can contain more haemoglobin so more oxygen can be transported
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Chloroplast can contain more chlorophyll so more carbon dioxide can be transported
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Chloroplast can contain more haemoglobin so more oxygen can be transported
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Detailed explanation-1: -In humans, as in all mammals, the mature RBC lacks a nucleus. This allows the cell more room to store hemoglobin, the oxygen-binding protein, enabling the RBC to transport more oxygen. RBCs are also biconcave in shape; this shape increases their surface area for the diffusion of oxygen across their surfaces.
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.
Detailed explanation-3: -Red blood cells are adapted for the transport of oxygen. They are small and flexible so they can fit through narrow vessels, have a bi-concave shape which maximises their surface area to absorb oxygen, have a thin membrane so gases easily diffuse through, and contain haemoglobin which binds to oxygen.
Detailed explanation-4: -Answer and Explanation: Red blood cells are specialized for oxygen gas transport but they themselves do not use the oxygen they transport. Red blood cells lack any organelles including mitochondria. The mitochondria are where oxygen is used to produce ATP energy.
Detailed explanation-5: -The mammalian red cell is further adapted by lacking a nucleus-the amount of oxygen required by the cell for its own metabolism is thus very low, and most oxygen carried can be freed into the tissues. The biconcave shape of the cell allows oxygen exchange at a constant rate over the largest possible area.