Answer:
A. Botulinum toxin possesses a heavy chain and a light chain, each of which takes part in the toxicity. The binding of the protein and its invasion within a nerve cell is permitted by the heavy chain. After the entry is permitted, the light chain functions like a protease and chops proteins, which would usually permit neurotransmitters to discharge out from the cell. This is basically a commotion of exocytosis or the discharging of neurotransmitters.
The acetylcholine, that is, the obstructed neurotransmitter generally conducts a nerve impulse to a muscle, allowing the muscle to contract. By inhibiting the neurotransmitter, the botulinum toxin results in its distinctive flaccid paralysis.
B. The small doses of the sterile, purified botulinum toxin when used in a medical setting as an injectable form prevent the release of a chemical known as acetylcholine by the nerve cells, which signal contraction of the muscles. By selectively interfering with the underlying tendency of the muscles to contract, the prevailing frown lines are smoothed out, and in the majority of the cases are almost invisible for a week.
Answer:
Explanation:
Honey-colored eyes A is dominant over blue-colored eyes a.
A homzygous honey-colored male (AA) had a baby with blue-eyed female (aa).
AA x aa
Offspring Aa Aa Aa Aa
1. Since A is dominant over a, <u>all the expected offspring would have honey-color eyes with Aa genotype.</u>
2. The genotype of the homzygous honey-color eyes father would be AA while that of the blue-eye mother would be aa.
Answer:
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Explanation:
The 6 example of the building reproduction are bydra,coral reef, fungi, sponge,and some tunicate.
