Explanation:
The model only shows the sensory pathway of the reflex arc and does not show the motor pathway. The neuron loop / circuit is incomplete and therefore it does not show how Zoe would react to the nail in her leg.
When the sensory pathway carries the signal to the brain about the pain in the leg, the brain process the information and sends feedback to the muscles through motor neurons ‘telling’ the muscles how to react. The motors' neuron causes the muscle to contract in such a way that the leg moves away from the nail.
The process is called photosynthesis and it takes place in the chloroplast of a plant cell
<u>Answer</u>:
Different types of magnifying technology like light microscopy and electron microscopy helped scientist to determine differences in the internal structures of plant and animal cells.
<u>Explanation</u>:
Human eyes can only see up to 1 mm in range. Plants and animal cells are very small which cannot be seen by the naked eye. For this reason, microscopes have been used to see enlarged structures of cells with the help of a compound microscope or electron microscope.
Light microscope can only magnify up to 1000x time to see the details of the cell but electron microscopes can magnify up to 100,000x times. The cells to be examined for the internal structures are cut into fine slices with the help of ultramicrotome and visualized under transformation or scanning electron microscope.
Cancer cells divide endlessly
