Answer:
Explanation:
When a substance has the capacity to disrupts the genetic compositions (DNA) of the organisms, to the extent that it makes the particular organism genetic materials prone to genetic mutation,( random changes in the genetic composition) such group of substances are called Mutagens.
ionizing radiation,radioactive decay are some examples of of physical mutagens, while biological mutagens examples include viruses and bacterial. Chemical mutagens are Benzene compounds,bromine,aromatic amines,sodium Azide.
They exerts their negative effects
by disrupting gene expression sequence of transcription, translation, or changed the nucleotides sequence of the DNA leading to deletion, addition, subtraction of genetic bases.Some may make chromosomes to be unstable, disrupting the structure
Although some mutagens can cause cancer, that is they are mutagens. not all mutagens carcinogenic.This is because the Mutagenic effects depends on the metabolites present in the cells of the organisms.
Answer:
If something is at rest it will stay at rest UNTIL a force acts upon it same thing if it is moving it will go in a straight line unless an outside force is acted upon it
This law is also known as the law of inertia.
Answer:
sewage sludge
Explanation:
The solid material waste from waste water is called sewage
sludge
Answer:
d. All of these statements are true.
Explanation:
According to the "A Citizen's Guide to Radon" manual on the third page:
<em>"Radon comes from the natural (radioactive) breakdown of uranium in soil, rock and water and gets into the air you breathe. Radon can be found all over the U.S. It can get into any type of building—homes, offices, and schools—and </em><em>result in a high indoor radon level</em><em>. But you and your family are most likely to get your greatest exposure at</em><em> home</em><em>, where you </em><em>spend most of your time</em><em>."</em>
According to a study by Brazilian researchers, the greatest exposure to gas radon occurs indoors, such as tunnels, wineries, mines and homes. All of these environments are typical of developed countries that exploit environments to build cities and homes for the population.
Treatment of epilepsy is directed at stabilizing overexcited nerve membranes.
<h3><u>Explanation:</u></h3>
Epilepsy is a disease whose cause is unknown, but it occurs as the nerves get too excited in the brain due to some unknown cause, and causes the centers to conduct the nerve impulses restlessly, and gets in a tetani mode, which is epilepsy. The patient presents with idiopathic seizures and that too, aggravated by stress, tension etc.
Antiepileptic drugs like phenytoin sodium causes the change in sodium channels and pumps which releases the concentration difference on each side of the neural membrane, thereby reducing the potential difference between the two sides. Thereby it stabilizes the nerve membranes.
