The answer is myosin. Myosin are contractile protein the makes up thick filament. The molecule consists of a tail and two myosin heads which bind to myosin binding sites on actin molecules of thin filaments during muscle contraction. Actin on the other hand are contractile proteins that are the main component of thin filament. Each actin molecule has a myosin-binding site where myosin head of thick filament binds during muscle contraction.
Explanation:
cells have proteins called receptors that bind to signaling molecules and initially I ate a physiological response...because membrane receptors interact with both exteacellar signals molecules within the cell, they permit signaling molecules to affect cell function without actually entering the cell.
Answer:
The correct answer is - viruses.
Explanation:
Most of the exanthems that occur in childhood are due to viruses such as adenovirus, measles, chickenpox and many others including various herpes infections.
These exanthems are very normally common in general but appearance could be different. Viral exanthems are major cause of the childhood exanthems these are appeared to pink or red skin patch over various and large part of body.
Thus, the correct answer is - viruses.
Answer:
#1 is Fossils, and #2 is Paleozoic
Explanation: