Answer:
<h2>
Calcium ions</h2>
Explanation:
The actin and myosin are the myofilaments which are involved in the contraction and relaxation of the muscle. The actin is thin filaments and contains the attachment site for the myosin but the site is blocked by the tropomyosin and troponin proteins.
When calcium ions present in the muscle binds to the troponin molecules, it changes the conformation of the tropomyosin. This change exposes the attachment site of the myosin and then the myosin binds the troponin and causes Powerstroke and leads to contraction of a muscle.
Thus, Calcium ions is correct.
When a vessel capsizes, first thing is to check the safety of everyone.
You need to do a head-count to ensure that all passengers of the vessel are there and then make sure that they are all wearing life-jackets.
Answer:
In the mentioned case, both the cells will start to perform replication of their DNA. In the case of G0, that is, the stationary phase, the mammalian cell can pass the restriction point with the supplementation of extracellular proliferation signal. While in the case of G1, which actually does not require any kind of external proliferation signal, as once the cell is in G1 phase, it is ready to go get the next phase. However, both the mammalian cells will cease or halt at G2 checkpoint.
It is a concern because it has affected Brazil majorly and mostly on the newborn children, this is why they want a treatment because its ruining Brazilian children
Prokaryotes, which the most common type of prokaryote is a bacteria
