[Answer] 2. Asthma is characterised by which of the following disease processes?

Step 1 : Introduction to the question "2. Asthma is characterised by which of the following disease processes?"

...1. Inflammation of the airway/'windpipe' 2. Allergic response 3. Production of mucus and phlegm 4. All of these Asthma is an inflammatory disease. This means that the airway and small air passages in the lungs become swollen and inflamed, often as an allergic response to a "trigger". At the same time, the airways narrow, and may become clogged with sputum and mucus - yuck!

[Answer] 4. Photosynthesis and cellular respiration are opposite cell processes. One puts this compound into the atmosphere and the other one takes it out. Which compound fits this description?

Step 1 : Introduction to the question "4. Photosynthesis and cellular respiration are opposite cell processes. One puts this compound into the atmosphere and the other one takes it out. Which compound fits this description?"

...1. Nitrogen 2. Carbon Monoxide 3. Hydrogen 4. Carbon Dioxide Another substance that would have fit this description is oxygen, but it's an element, not a compound. Photosynthesis and cellular respiration are opposite processes because their chemical equations are reversed. Also, one stores energy while the other releases it.