True or False: Inhaled air is mostly made up of nitrogen, some oxygen and very small amount of carbon dioxide, water vapour and other gases.
True
True or False: Exhaled air contains much more carbon dioxide than oxygen.
False
What are xylem?
Water-carrying tubes. They carry water and dissolved mineral salts absorbed by the roots from the soil to all other parts of the plant.
What are phloem?
Food-carrying tubes. They carry sugar/food made mainly by leaves to all other parts of the plant.
Any extra food (sugar) made by the leaves is stored in other parts of the plants as a. starch b. sugar c. water d. oxygen
a. starch
What is the function of stomata? a. To trap more sunlight for making food b. To allow only the exit of oxygen c. To allow the intake of carbon dioxide and the release of oxygen d. For photosynthesis
C
Explain why.
The amount of Gas P inhaled increases. When Jack runs, his body needs more energy. Thus, he breathes faster to take in more oxygen, which is pumped by the heart
What happens to our ribcage and diaphragm when we breathe in?
The ribcage moves upwards and outwards while the diaphragm contracts and moves downwards.
What happens to our ribcage and diaphragm when we exhale?
Our ribcage moves downwards and inwards while our diaphragm relaxes and moves upwards.
True or False: A. The right upper chamber of our heart receives the unoxygenated blood while the left upper chamber of our heart receives oxygenated blood from the lungs.
True
True or False: The unoxygenated blood enters the right lower chamber and sends to the left upper chamber for gas exchange.
False. The unoxygenated blood enters the right upper chamber.
True or False: The left lower chamber pumps the oxygenated blood to all parts of our body.
True
True or False: The left upper chamber of our heart receives the oxygenated blood from the lungs.
True
Describe the difference in the amount of oxygen in blue-coloured side of the heart and the red-coloured side of the heart.
Blue-coloured side of the heart has less oxygen than the red-coloured side of the heart.
Describe the difference in the amount of carbon dioxide in blue-coloured side of the heart and the red-coloured side of the heart.
The blue-coloured side of the heart in the picture has more carbon dioxide than the other side.
