Answer:
C. mRNA serves as the template for DNA, which carries the code to the ribosome for protein construction.
Answer:
c) It introduces a premature stop codon into the mRNA
Explanation:
Nonsense mutation is a type of point mutation (single nucleotide base is changed) which leads to premature stop codon. Stop codons are also called nonsense codons and that is way this type of mutation is called nonsense mutation. As a consequence, synthesized protein is incomplete and shorter than it should be (truncated protein), usually nonfunctional.
Answer:
Nonpoint-source pollution is the opposite of point-source pollution, with pollutants released in a wide area. As an example, picture a city street during a thunderstorm. As rainwater flows over asphalt, it washes away drops of oil that leaked from car engines, particles of tire rubber, dog waste, and trash. The runoff goes into a storm sewer and ends up in a nearby river. Runoff is a major cause of nonpoint-source pollution. It is a big problem in cities because of all the hard surfaces, including streets and roofs. The amount of pollutants washed from a single city block might be small, but when you add up the miles and miles of pavement in a big city you get a big problem.
In rural areas, runoff can wash sediment from the roads in a logged-over forest tract. It can also carry acid from abandoned mines and flush pesticides and fertilizer from farm fields. All of this pollution is likely to wind up in streams, rivers, and lakes.
Airborne pollutants are major contributors to acid rain. It forms in the atmosphere when sulfur dioxide and nitrogen oxides combine with water. Because acid rain results from the long-range movement of those pollutants from many factories and power plants, it is considered nonpoint-source pollution.
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Explanation:
I would say that your answer would be A.) seeds. Plants don't even have reproductive organs, so that answer would be a definite no. Pollen and nectar comes from both trees and flowers, not fruit. So, that would make your answer seeds.
Answer:
I hope this answers your question. Some people can't get certain vaccines when they are certain ages. If you are too young(just born) or too old, you may not want to have vaccines that can be hard on your body. People with certain health risks shouldn't get vaccines either. Another example would be someone has a severe reaction to a vaccination, they shouldn't get a booster for the vaccine in the future.
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