bile juice does not contain any enzyme , yet it is important for digestion. why?

how is oxygen produced during the process of photosynthesis?

the trachea is covered by 'C' shaped cartilaginous rings. why?

amphibains and reptiles possess a 3 chanbered heart. why?

outline the different ways in which glucose is oxidized to provide energy in various organisms

Due to paucity of time it would not be possible for us to provide the answers to all your queries. We are providing solutions to some of your good queries. Try solving rest of the questions yourself and if you face any difficulty then do get back to us.

1. Bile is a digestive juice secreted by the liver. Although it does not contain any digestive enzymes, it plays an important role in the digestion of fats. Bile juice has bile salts such as bilirubin and biliverdin. These break down large fat globules into smaller globules so that the pancreatic enzymes can easily act on them. This process is known as emulsification of fats. Bile juice also makes the medium alkaline and activates lipase.

2. For the answer of this question, kindly refer to the lesson 1 of chapter 6 of our study material. 

3. Trachea is covered by C shaped cartilaginous rings because the walls of trachea are very thin. The cartilaginous rings are present covering the trachea to prevent trachea for getting collapsed.