SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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stay inside
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enter into
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exit out of (or diffuse)
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none of the above
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Detailed explanation-1: -Gas exchange occurs when oxygen from the air that is breathed in flows into an animal’s blood via a process called diffusion. In exchange, the carbon dioxide that cells produce as a waste product diffuses from the blood into the air and is breathed out.
Detailed explanation-2: -The carbon dioxide diffuses out of the red blood cells, through the capillary walls, and into the alveolar spaces f exhaled.
Detailed explanation-3: -Figure 4 During internal respiration, oxygen diffuses out of the capillary and into cells, whereas carbon dioxide diffuses out of cells and into the capillary.
Detailed explanation-4: -Some substances (small molecules, ions) such as carbon dioxide (CO2) and oxygen (O2), can move across the plasma membrane by diffusion, which is a passive transport process.
Detailed explanation-5: -Substances like oxygen, carbon dioxide and glucose move in and out of cells by diffusion.