Answer:
Respiratory bronchiole
Explanation:
The respiratory bronchioles represent the narrowest airways within the lung, being continuations of terminal bronchioles that have approx. 0.5 mm in size. The epithelium of the respiratory bronchiole is composed of cuboidal ciliated cells and a small number of non-ciliated (secretory) Clara cells. The respiratory bronchioles lead into alveolar ducts composed of smooth muscle and connective tissue (i.e., elastin and collagen), connecting the respiratory bronchioles to the alveolar sacs.
Answer:
C) is prevented due to growth-inhibiting proteins of oligodendrocytes
Explanation:
Oligodendrocytes are the neuroglial cell and mainly serve to support neurons. These cells also produce a myelin sheath around axons of neurons of the central nervous system. Axons in the CNS display little regrowth or neurogenesis. Inhibition of regeneration is due to several factors such as the absence of a neurolemma and an inhibitory influence of the oligodendrocytes on axon regrowth. For the purpose, the oligodendrocytes produce growth-inhibiting proteins. Axons in the CNS are myelinated by oligodendrocytes and this myelin is one of the inhibiting factors in the regeneration of neurons.
Budding is one way for cells to become two.
Answer:
The purpose of these nodules is that they contain bacteria whcih has the ability to convert atmospheric nitrogen into ammonia.
Explanation:
A small buldged like part present in the roots of leguminous plant due to symbiosis association of root with the nitrogen fixing bacteria such as rhizobium is called as root nodules.
It is composed of protein and nitrogen fixing bacteria. Under nitrogen deficient condition, the legemunous plant with help of root nodules traps the atmospheric nitrogen and fixes it with the help of nitrogen fixing bacteria present in them.
