The stem cells divide through mitosis making two daughter cells. One daughter cell becomes a stem wall, and the other daughter cell differentiates into the tissue, so therefore stem cells maintain their populations because mitosis produces a daughter cell that differentiates, as well as one that self-renews, remaining a stem cell. Good luck, and hopefully this helps you out!
Ribosomes are the site of translation of strands of transferRNA into chains of amino acids. Ribosomes allow the reading of the genetic information coded for by the tRNA which codes for the position of amino acids along a protein
A. The axon carries information through electrical impulses...
Disruption of axonal transport would be a good target for his drug.
<h3>What is disruption of axonal transport?</h3>
- Axonal transport defects are among the early molecular events leading to neurodegeneration in mouse models of amyotrophic lateral sclerosis (ALS).
- Gene expression profiles indicate that dynactin-1 mRNA is downregulated in degenerating spinal motor neurons of autopsied patients with sporadic ALS.
- Disruption of axonal transport also underlies the pathogenesis of spinal muscular atrophy and hereditary spastic paraplegias.
- The neurotoxin β,β′-iminodipropionitrile (IDPN) selectively disrupts slow axonal transport without affecting fast anterograde or retrograde axonal transport.
- Impairment of slow axonal transport causes a proximal accumulation of neurofilaments.
- Because neurofilaments regulate axonal diameter, this accumulation leads to a marked swelling of the axon.
- Acrylamide causes decreased axonal transport, also causing proximal accumulations of neurofilaments and swelling.
To learn more about axonal transport,
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Answer:
Plus end and kinesin.
Explanation:
Three important cytoskeleton components are microtubules, microfilaments and intermediate filaments. Microtubules are the polymer of tubulin and plays an important role in the movement of cell organelles and its structure.
Microtubules shows the process of polymerization and depolymerization at different ends. The plus end shows the polymerization and minus end shows the depolymerization process. The kinesin protein is required for the process of polymerization.
Thus, the correct answer is option (D).
