Answer: Peroxisomes 
Explanation: 
These are micro body which is found virtually in all the eukaryotic cells. They are involved in the catabolism of long chain and short chain fatty acid.
They generate the highly reactive oxygen species and it is broken down here only.These molecules are hydrogen peroxide and they are converted into water molecules.
This organelle is known as peroxisomes.
 
        
             
        
        
        
Cancer and Tumors...
           ........ Hope it helps, Have a good rest of the day:)
        
             
        
        
        
Answer:
D, think of chemical changes. When iron rusts it is chemically changed. The other answers are a change in form or a property of iron.
 
        
             
        
        
        
The answer u r looking for is- D, Nuclear Envelope. Hope I’ve helped ;)
        
             
        
        
        
Answer:  fat
Explanation:
Carbohydrates, fats and proteins are among the major nutrients in the food component.
- Where proteins helps in growth of the body where as carbohydrates and fat provide energy. Protein has 4 calories per gram. 
- Carbohydrates are instant form of energy. All carbohydrates turn into glucose and raise our blood sugar. Carbohydrate has 4 calories per gram.
- While fats are the slowest source of energy but provides most energy. Each gram of fat provides about 9 calories [ approximately more than twice that in proteins or carbohydrates].
Hence, fat gives you the most energy .