The distance between 1 and 7 spans a sarcomere correspond the structure at B is covered by the perimysium.
<h3>What is the smallest contractile unit within skeletal muscle?</h3>
A sarcomere comprises the segment between two consecutive Z lines and is the contractile unit of the muscle fiber, as it is the smallest portion of the muscle fiber capable of contraction and distension.
In this case, the distance between points 1 and 7 has the smallest structure of a skeletal muscle and corresponds to figure B.
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Answer: Enzymes are life’s great facilitators. They create the conditions needed for biochemical reactions to happen fast. The general name that chemists use for chemical entity that increases the speed of a reaction is “catalyst.” Enzymes are biological catalysts they catalyze the chemical reactions that is happen inside living things.
Explanation:
Following the initiation of DNA replication, the first step is the synthesis of <span>a short RNA primer.</span>
Darwin's theory of natural selection is as follows:
Darwin observed that population sizes of any species would increase exponentially if all its individuals born reproduced successfully.
However, Darwin observed that populations tend to remain the same size (except for seasonal fluctuations).
Darwin also noticed that resources are limited.
Thus, Darwin concluded that if more individuals are produced than the environment can support, then there is a struggle for existence among the population's individuals, and only some of the offspring survive each generation.
Darwin also observed that no two individuals are exactly alike.
As a result, Darwin concluded that individuals whose inherited traits give them a higher fitness (a higher probability of surviving and reproducing) and are more likely to leave more offspring than less fit individuals; survival depends on inherited traits.
Darwin then inferred that favorable characteristics will accumulate over generations as this unequal ability of individuals to survive and reproduce will eventually lead to a gradual change in population, especially as environmental factors filter heritable variations.
Furthermore, he realized that much of this variation is heritable. Darwin's theory can also be explained as natural selection, the differential success in reproduction among individuals that vary in their heritable traits, emerges as each individual interacts with its environment. Over time, the adaptations of organisms to their environment will increase due to these reproductive differences. Then, if individuals of a particular species move into a new environment or if the environment changes, natural selection does result in adaption to these new conditions, while regularly & occasionally giving rise to new species. Note that a population is the smallest unit that can evolve, natural selection can increase or decrease only heritable traits, and the favored traits depend on the environment.
Answer: True
Explanation:
The bioethics can be defined as the ethical issues emerging from the advances in the biology and medicines.
It is concerned about the ethical questions that arises while performing any experiment. This is necessary to have a look on the experiments which is going to happen.
There are many types of research work going among life sciences, biotechnology. According to Engelhardt the phenomenon of the bioethics can be understood as modern intellectual undertaking the reefs of post modernity.
