Answer:
a) Myelinated nerve fibres
b) The white matter
c) gray matter
Explanation:
The three main parts of cerebral hemispheres are
a) Myelinated nerve fibers
b) The white matter
c) Gray matter
The nerve fibers of the white matter are responsible for connecting the functional parts of cerebral cortex while the gray matter is further divided into four surface folds/lobes with each lobe associated with a specific activity. Such as frontal lobe take cares of motor activity and speech, parietal lobe is responsible for touch and position sensation, occipital lobe for vision and temporal lobe for hearing.
A long reflexive pathway has an advantage over a short reflexive pathway in the fact that they can be also be stimulated by the central nervous system, whereas the short reflexive pathway is only stimulated by the enteric nervous system.
The kind of membrane transport that becomes crucial in an environment when a population of bacterial cells have been placed in a very nutrient-poor environment with extremely low concentrations of sugars and amino acids is the active transport.
Passive transport occurs from a region of higher concentration of the nutrients to a region of lower concentration of nutrients through a semi-permeable membrane. This occurs when bacteria are grown in a nutrient rich media without the involvement of energy.
When bacteria are grown in a nutrient media with low concentration of amino acids and sugars, nutrients have to move from a region of the lower concentration of the nutrients to the region of higher concentration of the nutrients (from nutrient media to the cell). It is against the concentration gradient with the expenditure of energy in the form of adenosine triphosphate (ATP).
Magnet .................................
Not every plant grows from a seed. Some plants like ferns and mosses, grow from spores. Other plants use asexual vegetative reproduction and grow new plants from rhizomes or tubers. You can also use techniques like grafting or take cuttings to make new plants.
Hope this helps