Allentown is 50 miles (80 km) north-northwest of Philadelphia, the fifth most populous city in the United States, 90 miles (140 km) east-northeast of Harrisburg, the state capital, and 90 miles (140 km) west of New York City, the nation's largest city.
Mitochondria is the organelle that uses energy from organic compounds like pyruvate to make ATP, or adenosine triphosphate.
Key points: 1  Mitochondria are the powerhouses of the cell, breaking down fuel molecules and capturing energy in cellular respiration. 2  Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis.