Answer: The majority of animals on our planet, about 95 percent, do not possess a true backbone and are called invertebrates. It's common knowledge that vertebrates like humans have a complex nervous system that reacts to stimuli, but much less is known about invertebrates like shrimp and insects. While it's somewhat different from that of vertebrates, shrimp do have a central nervous system comprised of four main parts.
Explanation:
Answer:
Tay Sachs
Explanation:
Tay Sachs is a neurodegenerative disorder caused by the deficiency of enzyme hexosaminidase A in lysosome. Lysosome is responsible for degradation of lipid molecules which it carries out by the help of hexosaminidase A enzyme. In absence of the functional enzyme, lipids build up in lysosome which ultimately damages the cell and the tissue. Nerve cells are damaged the most in this disorder.
It is an autosomal recessive disorder which means that the mutant allele must be present in two copies for the production of symptoms. Symptoms are hypotonia, psychomotor regression etc. Its frequency is much higher in Jewish people of Ashkenazi descent. 1 in 30 Ashkenazi Jewish people has the mutant version of the gene.
Warm water holds less oxygen
