INTRODUCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They transport carbon dioxide and contain chlorophyll
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They transport carbon dioxide and contain haemoglobin
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They transport oxygen and contain chlorophyll
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They transport oxygen and contain haemoglobin
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Detailed explanation-1: -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-2: -Red blood cells: Red blood cells (RBCs, also called erythrocytes; pronounced: ih-RITH-ruh-sytes) are shaped like slightly indented, flattened disks. RBCs contain hemoglobin (pronounced: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs.
Detailed explanation-3: -Red blood cells contain a protein called hemoglobin, which carries oxygen from the lungs to all parts of the body. Checking the number of red blood cells in the blood is usually part of a complete blood cell (CBC) test.
Detailed explanation-4: -Red blood cells squeeze through narrow capillaries in single file. Haemoglobin molecules inside red blood cells pick up and carry the oxygen. These oxygen-rich cells travel in the blood vessels from the lungs to the left side of the heart. The blood is then pumped around the body.