Answer:
The source of Calcium (Ca⁺⁺) for the skeletal muscle cells is the sarcoplasmic reticulum, the main store of intracellular Ca⁺⁺.
Explanation:
Calcium (Ca⁺⁺) is an ion that plays an important role in muscle contraction, a process that requires high cytoplasmic concentrations of this ion to promote myofibrillary activity.
The sarcoplasmic reticulum (SR) -equivalent to the endoplasmic smooth reticulum- is an organelle that regulates the contractile activity of skeletal muscle. The two terminal cisterns of the SR attach to the T-tube, forming a triad, which surrounds the myofibrilla.
Once the muscle cell receives the signal to contract, the Ca⁺⁺ channels are opened and allow Ca⁺⁺ to enter the cell, promoting the exit of this cation from the SR and increased its cytoplasmic levels. This stimulates muscle contraction.
Answer:
Explanation:
The closed metal container will get distorted or compressed due to a combination of two reasons:
1.<em> contraction of the metal container as a result of a reduction in its temperature.</em>
2. <em>a reduction in the pressure inside the container caused by a sudden drop in the temperature of the water inside it. </em>
The tap water causes a reduction in the temperature of both the container and the water inside it. An increase in temperature causes metal to expand and a reduction in temperature causes it to contract. Also, water takes less space than steam. Therefore, a reduction in the temperature of the hot water causes a reduction in the pressure inside the container relative to the outside. This causes the metal container to be compressed.
They make up everything needed to create DNA, although im not very sure, i think the answer your looking for is DNA.
Explanation:
anther is where the pollen is located.
The ovary contains the ovules, which need to be fertilized in order to produce a seed.
the flower is reproductive part of the part cause The primary purpose of a flower is reproduction. Since the flowers are the reproductive organs of plant,
Your answer would be SS uppercase means dominant and lowercase means recessive. This is full dominant because of the two uppercase letters of SS. I hope this helped!
