Smooth muscles depolarize as a result of a transmembrane current of Calcium ions. When an action potential depolarizes the muscle cell membrane, it also travels into the body of the cell via the t-tubules. Unlike skeletal muscle, smooth muscle is dependent in two sources of calcium in order to intiate contraction. These two sources are calcium sequestered in the S.R. of the smooth muscle cell.
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In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva.
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The answer is; C
Gene therapy is still not considered safe and has not been approved for humans, especially due to errors in inserting of DNA at the target site and also random relapse of the DNA from its inserted site. Gene therapy, however, can be sanctioned when its benefits outweigh its risks such as in terminally ill patients - with the approval of the patient and local relevant policies/authorities. Gene therapy, today, is being tested with innovative tools called CRISPR/Cas9.
Answer:Stimulus: any change in an organism's environment that causes the organism to react. It is a fancy way of saying “cause”. Example: An animal is cold so it moves into the sun.
Explanation:
Answer:
The best answer to the question: These characteristics make primates particularly well adapted to what type of environment? Would be: the arboreal environment.
Explanation:
According to the video, primates, which subdivide into several groups, including the apes, from which also humans evolve, have, depending on their group, specific anatomical features and traits that allow them to survive in their environment. One such anatomical trait is the presence of larger brains than other mammals, long limbs, long fingers and strong lower limbs that allow them to adapt to tree life and survive in forest regions. Also, they tend to have a much more acute sense of vision due to their larger brain, but a much more limited sense of smell than other mammals. These characteristics become basic for them to live and survive in forest environments.
