<span>A point mutation that results in the substitution of one amino acid for another within a protein is a missense mutation. 
</span>This type of mutation<span> is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a </span>gene<span>. </span>
        
             
        
        
        
<span>3. Cells use glucose to store large amounts of energy for long period of time. 
In contrast, ATP is used to </span>store smaller amounts of energy that will be used in the next few seconds.<span>
A glucose molecule can store more than 90 times the energy of a ATP molecules.
4. The fact that the potted plant is in air tight jar affect the process of photosynthesis. The plant is airtight jar which means that the plant is not able to breath and run out of CO2 to produce sugars. So t</span><span>he plant wouldn't be able to complete photosynthesis.</span>
        
             
        
        
        
Answer:
<u>From the main motor cortex, Brodmann region 4 premotor areas and the primary somatosensory cortex .</u>
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Explanation:
The corticospinal tract originates in many regions of the brain, including 
- the motor regions, 
- main somatosensory cortex 
- pre-motor regions
The corticospinal tract allows for voluntary control of motor functions. 
30% of the neurons in the corticospinal regions are found in the primary motor cortex. 40% are split up in several regions; the parietal lobe, somatosensory cortex and the cingulate gyrus.
The axon is a tube enclosed in and insulated by the myelin sheath. It serves as a link to impulses for certain neurons that often comprise axon hillocks that are junctions between the axon and the cell body.