The most effective way to prevent DNA mutation from UV radiation is: (C.) Avoid UV radiation by wearing sunscreen.
Mutation is the change in the normal sequence of DNA. The agents that induce these mutations are called mutagens. The mutations can be harmful as they can hamper the normal functioning of the living body. Some mutations however do not cause any significant changes and they are therefore called silent mutations.
Sunscreen is a a cream or liquid applied to the skin that prevents the harmful radiations of the sun to enter the body. They protect from the sun's UV-A and UV-B radiations.
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1.No 2.yes 3.yes 4.no 5.no
Answer:
C) production of sperm and eggs
Explanation:
Sperms and eggs are the male and female gametes respectively. Formation of sperms and egg cells require meiotic cell division. Meiosis in sperm mother cells and egg mother cells reduces the chromosome number of half in the sperms and eggs. Meiosis also adds new gene combinations in these gametes by the process of crossing over.
Mitosis cannot reduce the chromosome number to half in the sperms and eggs. Absence of crossing over in mitosis leads to the formation of genetically identical progeny cells from mitosis.
Hence, mitosis can not form sperms and egg cells. If it does, the sperms and egg cells would not have genetic variations and there would be doubling of chromosome number with each round of sexual reproduction.
It makes a weird kind of medicine that makes you more healthy, and it eats away rotting wood .etc.
Answer:
1. Liver
2. Liver and Kidneys
3. Mitochondria
4. Lumen of the small intestines
5. Liver
Explanation:
1. Glucose is phosphorylated into glucose-6-phosphate which is the first step of both glycogen synthesis and glycolysis, this process occurs in the liver
2. Glucose 6-phosphate is a product of a process named gluconeogenesis which occurs in the liver it serves as a substrate for glucose-6-phosphatase in the liver.
3. Creatinine kinase is an enzyme that catalyzes the phosphorylation of creatine. In regeneration process of ATP, creatine phosphate transfers a high-energy phosphate to ADP which produces ATP and creatine
4. Initially lipase digestion lipase digestion happens in the small intestine where the bile salts reduce the surface tension of the fat droplets allowing the lipases to attack the triglyceride molecules. These molecules are taken up into the epithelial cells that line the intestinal wall, where they are resynthesized into triglyceride
5. The job of the liver is to produce ketone bodies. If the liver had this enzyme, the ketone bodies it produces would be immediately broken down by the liver before they are released, thereofore, no release of ketone bodies into the bloodstream
