I just took the test. The answer is climate
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.
Answer:
The presence of cholesterol in the plasma membranes of some animal cells <u>enables the membranes to stay fluid when cell temperature drops</u>.
Explanation:
Cholesterol is an essential lipid in the basic structure of cell membranes. The membranes must have a fluid structure so that the proteins integrated in them can move ''horizontally'' to interact with their ligands and with other proteins. With excess saturated fat the membranes become rigid, but only with the necessary unsaturated fat the membranes are extremely fluid, and very sensitive to changes in temperature. Cholesterol stabilizes the structure of the membranes; preventing the collapse and crystallization between lipid chains that would lead to loss of fluidity and excessive rigidity in the membrane. By decreasing the temperature; as temperatures drop, fluidity decreases, an effect that partially counteracts the presence of cholesterol.
Answer:
Explanation:
1. ----------manganese----------- is found in animal foods like meat and poultry, whereas the-----copper--------------- form is found in plant foods like grains and vegetables.
2. The metal and trace mineral --------selenium---------------------- is part of several enzymes and proteins.
3. Adequate ------------------zinc------------------------- is important for maintaining a healthy immune system and may aid in wound healing.
4. ---------manganese---------------------- acts as an antioxidant and aids in thyroid function.
5. ------flouride----------------------------- is not considered essential, but it is very important for maintaining strong, healthy teeth.
6. The deficiency disease goiter was much more common before --------------heme iron-----------was added to salt in the United States.
7. -----------non heme iron---------------------acts as a cofactor for a variety of enzymes and also plays a role in synthesis of bone.
