In animals, nitrogenous wastes are produced mostly from the catabolism of . In animals, nitrogenous wastes are produced mostly from the catabolism of . phospholipids and glycolipids proteins and nucleic acids starch and cellulose triglycerides and steroids

Proteins and nucleic acids

Explanation:

Nitrogen compounds in animals that are no longer of use, or are in access are excreted from the animals body, and are thus called nitrogenous waste. These nitrogenous waste can be excreted in three different ways.

1. Ammonia

2. Urea

3. Uric acid

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current