Answer: Substances which can cause cancer are known as carcinogens.
Explanation:
the process of cancer development is called carcinogenesis. Certain carcinogenic chemicals are associated with an increased risk of specific cancers due to chronic exposure.
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Answer:
organ: reproduction of self
Explanation:
Emergent properties are defined as the properties that arises when different system components working together and it do not represent property of an individual.
Self reproduction of an organ is not an emergent property because it is representing an individuals property and do not show any interaction with other level of organisation.
Hence, the correct answer is "organ: reproduction of self ".
The correction option is B.
DNA is the genetic material in living organisms and it is the basis for inheritance. DNA molecule is made up of nitrogenous bases, deoxyribose sugars and phosphate groups. In order for the genetic information in the DNA molecules to be preserved, the components of the DNA must be arranged in the correct order without any any error. Thus, for the nitrogenous bases inside the DNA molecule, they must be correctly paired with one another.
Answer:
The correct answer will be option-D
Explanation:
RNA or ribonucleic acid is the nucleic acid which was formed in the primordial time. The RNA molecule acts as an enzyme called ribozyme and also acts as the genetic material of a few viruses.
The RNA is composed of nucleotide monomer where each nucleotide is made of a ribose sugar, a phosphate group and the nitrogenous base adenine, uracil, cytosine and guanine.
Thus, option-D is the correct answer.
Answer:
B. nitrogen-fixing
Explanation:
Nitrogen fixing bacteria are able to change pure nitrogen into ammonia compounds.
Nitrogen fixing bacteria are found in the soil close to the root of leguminous plants. They are get their own nutrition by chemosynthesis.
- They take nitrogen from the atmosphere in form of nitrogen gas.
- The nitrogen gas is converted into fixed nitrogen compounds such ammonia.
