Peristalsis refers to the action of the involuntary muscle of the digestive track
Peristalsis involve a series of wave like muscle contraction that moves food to different processing station in the digestive tracts and it begins in the esophagus when bolus of food is swallowed. It involve involuntary movement of the longitudinal and circular muscle.
In firing a handgun, it is best to have protection in the eyes and ears. It could be seen to those people who are practicing shooting and to those who are authorize to use a hand gun. The reason why these are needed to be protected because firing a hand gun is loud enough that it could damage the ears when not protected and in the same time if eyes is not protected and the hand gun could have any complication or dysfunction, it could affect the eyes.
Answer:
Explanation:
The normal form of the prion protein PrP (shown here) is found on the surface of nerve cells, but when it changes into its misfolded form, it aggregates into long fibrils that clog up the normal functioning of the brain.
Answer:
The correct answer would be - the potassium ions continue to move out of the axon.
Explanation:
During transmission of the impulse when sodium channels are closed and potassium channels are open, the cell membrane of the axon cell becomes hyperpolarized due to the continuous movement of the potassium ion to outside the axon. During this refractory period, the impulse can not be fire or generated.
Thus, the correct answer would be - the potassium ions continue to move out of the axon.
Answer:
1. Ribosomes
2. DNA
3. Cytoplasm
4. Cell membrane
Explanation:
Prokaryotic and eukaryotic cells possess important differences but also share some similarities. The main difference between these types of cells is that <u>eukaryotes contain membrane-bound organelles and a nucleus</u>. Moreover, <u>eukaryotic cells, in contrast to prokaryotic cells, contain a cell wall and chloroplasts (in plants) and mitochondria, Golgi apparatus, amongst other differences, including the genetic material which, in prokaryotic cells, is a single and circular DNA.</u>
The similarities, on the other hand, involve, for example, the presence of ribosomes, vesicles, vacuoles, DNA, cytoplasm, and cell membrane. Although there is a significant difference in size and arrangement, we could say they share the similarity of possessing these structures.