Answer:
Carcinogenic
Explanation:
A carcinogenic substance is able to modify or damage the genome in a way which promotes the formation of cancerous cells. Cell cycle checkpoint proteins are very crucial for the progression of normal cell cycle. They check for any anomaly in their designated step and halt the process if it is detected. Repair mechanism is activated and cell cycle does not progress till the damage has been repaired.
Here, the pollutant alters the structure of these proteins such that they lose their function. They are not be able to stop cell cycle from progressing even if there is some damage in the genome. The cell divides and gives rise to more damaged cells. Eventually these cells lose their normal function and just keep dividing due to which their division rate becomes double of the normal rate. It can ultimately give rise to cancer which is why the chemical is carcinogenic.
<h2>Point mutation.</h2>
Explanation:
- The protein will be unchanged.
Mutation is defined as a change in nucleotide sequence of a gene. When a single nucleotide is inserted,deleted or substituted in a DNA sequence, then the resulting mutation is classified as point mutation.
A gene contains two region- intron region and exon region.
The region that codes for a particular protein is called the exon and the region that separates two exons and does not code for any protein is called the intron.
Most of the point mutations in the intron region are silent except if it is located at the splice site recognition sequence.
In the given situation the mutation is in the middle of the intron region so there is no chance of it being a splice site recognition sequence. Hence the protein will remain unchanged.
The Cretaceous Period was the last and longest period of the Mesozoic Era. It lasted 79 million years.
Answer:
Common examples include carbon, sulfur, oxygen, iron, copper, aluminium. Elements are represented by symbols. Compounds are substances made from atoms of different elements joined by chemical bonds. They can only be separated by a chemical reaction.
Explanation:
Substances can be categorised as either elements or compounds. Both of these are made up of atoms, the only difference is an element is made of one type of atom whereas compounds are made of two or more different types of atoms.
The answer is God and will always be God evolution has been continuosly proven to be flawed and just incorrect, I really dont know why they continue to teach it.
