Answer:
ai) P= Red blood cell Q= Alveoli
ii)1. It gives the lungs a large surface area to volume ratio.
2. It is moist and thin.
b) P has a disc or biconcave shape which allows the O2 to bind to it with the help of a protein called haemoglobin for it to be transferred to various parts of the body.
c) Carbon monoxide will bind to the haemoglobin to form carboxyhaemoglobin causing oxygen disruption
Answer:
that break down large molecules into smaller molecules
Explanation:
The lysosome is made up of digestive enzymes. They carry out different cell processes. It can break down work out cells, and can aid in the digestion and the break down of large molecules such as carbohydrates, proteins and also lipids. Lysosome is also helpful in the repairing of cell membranes. They are mostly found in the cells of animals.
