Answer:
Troponin and calcium ions.
Explanation:
Troponin is a component of thin filament along with tropomyosin and actin. It is a protein complex to which calcium binds and start the production of muscular force.
Calcium also playing a very important role in muscle contractions, it binds with troponin and helping to move tropomyosin.
When calcium ion attached to troponin, then conformational changes occurs in troponin shape and moves which allow tropomyosin going away from its inhibitory position from the myosin-binding sites on actin. After this, the energized myosin head starts binding to the actin molecules and starts the cross bridge cycle, which helping in shortening the muscle's fiber.
Answer:
Hi! Well a population is a group of organisms that are the same species and live in the same area and they interact with each other! A community is where different populations of species live in the same area and interact with each other!
So the answer is population! Stay safe!! <3
Answer:
D. Red, Orange, Yellow, Green, Blue, Indago, Violet.
Explanation:
Violet has the highest freqency and red has the lowest.
Hope this helped!
