Gas exchange involves the transport of two respiratory gases, oxygen and carbon dioxide. Review how each gas is transported between the atmosphere and the cells of your body by completing this exercise. Drag each statement into the appropriate bin depending on whether it applies to oxygen only, carbon dioxide only, or both oxygen and carbon dioxide.

1)required for cellular respiration(Oxygen only)

2) net diffusion from alveoli to lung capillaries(Oxygen only)

3)sometimes transported as bicarbonate(Carbon Dioxide Only)

4)net diffusion from body tissues to blood(Carbon Dioxide Only)

5)net diffusion from lung capillaries to alveoli(Carbon Dioxide Only)

6)waste product of cellular respiration(Carbon Dioxide Only)

7)enters alveoli during inhalation(Both Oxygen and carbon dioxide)

8)transported by hemoglobin(Both Oxygen and carbon dioxide)

Explanation:

Gas exchange is a mechanism that helps the body to get the necessary Oxygen that is required for cellular respiration to take place

There is diffusion of oxygen to capillaries that are present in the lungs from the alveoli.

Gas exchange is a mechanism that is also responsible for the body to get rid of waste such as carbon dioxide,

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the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.