The structural level in which the muscle produces the contraction is known as the muscle fiber.
<h3>What is a muscle fiber?</h3>
A muscle fiber is a single muscular cell that is able to contract by using specialized proteins such as filaments of myosin and actin.
This unit (muscle fiber) is able to contract both in vivo and in vitro by establishing suitable environmental conditions (e.g., proper calcium levels).
In conclusion, the structural level in which the muscle contracts is the muscle fiber.
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Hans Krebs as the scientist who was pivotal in making some type of discovery that led to our understanding of the basic nature of cells.
Hans Krebs (25 August 1900 – 22 November 1981) was a British physician and biochemist born in Germany. He discovered that nutrients are broken down in our cells to release energy for the construction of cells
During acclimatization over a few days to weeks, the body produces more red blood cells to counteract the lower oxygen saturation in blood in high altitudes. Full adaptation to high altitude is achieved when the increase of red blood cells reaches a plateau and stops.Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). ... At the beginning of exercise, your body removes the parasympathetic stimulation, which enables the heart rate to gradually increase.
D)all of them
Answer:
The theory of evolution basically serves to explain the biological evolution of living beings. The theory of evolution basically serves to explain the biological evolution of living beings. This results in the appearance of new species different from the previous ones.
