Key is to lock as D. Substrate is to active site.
Answer:
Energy is passed between organisms through the food chain. The organism that obtains energy from sunlight is called the producer.
Explanation:
Answer: Triglycerides, cholesterol and other essential fatty acids--the scientific term for fats the body can't make on its own--store energy, insulate us and protect our vital organs. They act as messengers, helping proteins do their jobs
Explanation:
Answer:
2 membrane layers cover up the nucleus
