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:
c :Food webs illustrate multiple interrelated food chains.
Explanation:
A food web is the aggregation and the junction of various food chains.
Answer:
True.
Explanation:
It's is likely that only 100 blue birds will have enough water, this because organisms compete for nutrients ,water and shelter for survival. It is possible that 100 out of the blue birds with have enough water because there will be competition and it's a survival of the fittest. The birds that compete we'll get enough water.
Answer:
Explanation:
Antibiotic resistance is when the bacteria develop resistance to antibiotics. Antibiotic resistance will affect human populations is no action is taken by our Agricultural system because bacteria itself develop antibiotics resistance and these causes infections on humans and animals. The infections caused by antibiotics resistance bacteria are difficult to treat than those that are not caused by it. These the result in higher cost of medical treatment and treatment of animals, prolonged hospital admission and these can also lead to increased mortality or increase rate of death of Agricultural animals. When there is high mortality of Agricultural products due to this, there won't be enough consumption of these by humans and also there can be passage of these infections to human which can result to mortality.
Answer:
Algae i believe
Explanation:
I say this because the earliest animal is comb jelly
