The correct answer among the choices provided is option C. Water helps to maintain the structure, flexibility and motion of proteins. Hydration makes the protein structure more packed and stabilized. It is because water is included in many networks of hydrogen bonds.
The left atrioventricular valve is structurally different from the aortic valve in the following ways.:
The Left atrioventricular valve is bicuspid valve while the Aortic valve is the semilunar valve.
The Left atrioventricular valve has irregular leaflets that regulate the opening and closing of the atrioventricular orifice, while the aortic valve has cusps like structure folded like half moon shaped structure.
Specialized supporting structures are needed to support the AV valve to the heart while the semilunar shape of aortic valve is self supportive.
Explanation:
Atrioventricular valves maintain the unidirectional flow of blood from atria to ventricles while the aortic valve maintains unidirectional flow of blood from left ventricle to the aorta.
Answer:
Fossil fuels include coal, petroleum, natural gas, oil shales, bitumens, tar sands, and heavy oils.
So oil and petroleum should be it also. :)
Genetic variation<span> can be caused by mutation (which can create entirely new alleles in a </span>population<span>), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).</span>
