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In the element (<u>n Na20)</u> the <em>2 </em>means that there are 2 oxygen atoms in the Sodium Oxide.
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Answer No 3: Recent studies and researches have shown that the muscle cells do not actually wear and tear during heavy exercises. What happens is that micro tears are formed in the muscle fibers as a result of heavy exercise. These micro tears cause the muscle cells to rebuild themselves.
Answer No 4: One of the biggest reasons that the insertions done by CRISPR-Cas9 insertion would not pass to future generations is because the specialized cells are being modified in this system. As the specialized cells do not have the tendency to for all cells of the body hence, the insertion made by CRISPR-Cas9 will most likely not be transferred to the future generation.
The receptors involved in smell and motion detection are olfactory receptors and proprioceptors respectively.
Olfactory receptors are present on the cells of the olfactory epithelium in the nasal cavity. These receptors bind to the odor molecules and send signals inside the cell by producing chemical changes that are then detected and help in olfaction (detection of smell). These are a type of chemoreceptors.
Proprioceptors are a type of mechanoreceptors that detect changes in body position and maintain equilibrium. These receptors detect the position of limbs while walking and other activities. They are located in the skin, muscles, joints, and tendons.
Joni was able to smell the tangy sea air because of the olfactory receptors and was able to feel the motion of water beneath her feet because of the proprioceptors.
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