Because the molecules that are being transported is moving against its concentration. gradient. in other words, its moving from where it's low in concentration to where it's high in concentration.
Answer:
If this is a T or F question, it's probably true
B) the selection for different shaped beaks that best suit different niches
Answer:
The molecule that would be affected by 'limited nitrogen' is the myofibrillar proteins in muscle. Explanation: The myofibrils of the muscle have a number of protein molecules.
False !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
