D. Fill in the blanks.
1. Oxygen combines with haemoglobin in the blood to from .......
2. The lungs have millions of air sacs called .....
3. Carbon dioxide and ...... are formed during internal respiration,
4. Anaerobic respiration is also known as .......
5. The larynx is responsible for .......
6. The tiny openings on stems and fruit that plants use for breathing are called......
Answers
Explanation:
1. Red blood cells contain a dark red chemical called haemoglobin. Haemoglobin combines with oxygen in the lungs to form a bright red chemical called oxyhaemoglobin. When the blood gets to places where oxygen is being used up oxyhaemoglobin releases the oxygen and turns back into haemoglobin.
2. Each bronchiole is about the same thickness as a hair. At the end of each bronchiole is a special area that leads into clumps of teeny tiny air sacs called alveoli (say: al-VEE-oh-lie). There are about 600 million alveoli in your lungs and if you stretched them out, they would cover an entire tennis court.
3. Internal respiration is the process of diffusing oxygen from the blood, into the interstitial fluid and into the cells. ... Cellular respiration refers to the process of converting that oxygen along with glucose into ATP, a molecule that cells use to store usable energy, but creates carbon dioxide.
4. Anaerobic respiration is a process of formation of energy in the absence of oxygen. Fermentation is a form of anaerobic respiration and called as intramolecular respiration.
5. As the air rushes from our lungs out through the larynx, the from portion of the vocal cords vibrate, producing a sound. The upper portion of our throat then modifies this sound to produce speech. When we breathe, one pair of muscles spreads the vocal folds apart so that air can easily enter into the lungs.
6. The tiny openings on stems and fruits that plants use for breathing are called stomata.