Question

1. Relate enzymes, metabolic pathways and metabolic regulation

2. Give at least four mechanisms that limit protein mobility in the membrane

3. List the three basic membrane protein types and describe their location relative to the membrane

4. What types of bonds are formed between substrates and active sites?

5. What functions of enzymes allows them to catalyze endergonic reactions?

Answer 1

Ans 1) The enzymes are catalysts and play a very important role in the metabolism. They are responsible for regulating and operating the tightly regulated metabolic system that are responsible for performing various functions in the body. The metabolic regulations are those by which the body is able to take in nutrients and hence are able to provide energy for the regulation. The metabolic pathways are those by which are products essential for the functioning of the body are formed and majorly involves regulation with help of an enzyme through increase or decrease in the signals. The enzymes are related to the metabolic pathways as they help in monitoring the pathways.

Ans 2) Four ways by the protein movement can be limited is:-

1. Increase in the overall size of the protein as they self assemble and are known to known larger aggregates. They tend to interact with each other and hence their overall size increase limiting their mobility
2. They tend to form interaction with molecules or proteins that are present either outside or inside the cell.
3. The proteins tend to get trapped through the pores or gaps by which they move in and out the cells and this limits the mobility of other proteins.
4. There is change in the conformation of the plasma membrane or cell membrane and hence this leads to change in mobility.