Answer:
A. Both the cell membrane and nuclear membrane are protective coverings. B. The cell membrane is like a blanket, while the nuclear membrane is like a sieve.
Explanation:
Brainliest please?
Answer:
The first one is the second one, and the second one is the third one.
Explanation:
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.
The correct answer among all of the given choices would be the third choice, CLOUDS.
I hope this is the answer you were looking for and that it helps!! :)
In my opinion mixed layers would be the best choice
