Answer:
Schwann cells or neurilemma cells are the cells which form the myelin sheath around neuronal axons in the peripheral nervous system (PNS) only.
Neurilemma is the collective term used for cytoplasm and nuclei present around the myelin sheath which helps in the regeneration process of nerves.
A Schwann cell surrounds the axon, invaginate it and the plasmalemma of the Schwann cells joins and from a double membrane structure called mesaxon. This mesaxon starts wrapping the axon in spiral fashion and cytoplasm start condensing into the compact myelin sheath.
Answer:
a.
Explanation:
Engery is the driving force of the oxygen cycle is photosynthesis itself, which is responsible for the creation and maintenance of earth's atmosphere.
Answer:
archaeabacteria ( context clues can often give the answer :)
Answer:
The amino acids produced from sequence are
AUG Met (Methionine
)
AAC Asn (Asparagine
)
CAU His (Histidine
)
UCA Ser (Serine
)
GUA Val (Valine
)
UGG Trp (Tryptophan
)
Explanation:
