MCQ
The gene that causes cancer upon mutation is called as:
- AMutagene
- BOncogene
- CPlasmagene
- DNone of the above
Explanation:
Mutagens are physical/ chemical/ biological agents that can cause heritable changes in genetic material (mutation), for example, UV rays, X-rays, formaldehyde, etc. Oncogenes are the mutated form of genes that mostly govern the process of cell growth. But the mutated form disturbs cell division and cause cancer. These genes, directly or indirectly, control the rate of cell growth. For example, Bcl-2. that codes for apoptosis inhibitor but the mutated form causes B-cell cancers. A self-replicating independent hereditary gene that is present in the cytoplasm is called as plasma gene.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(a)$. Presence of histones
$(b)$. Nature of histone
$(c)$. Nature of nucleotide
$(d)$. Linear form of genetic material
$(1)$ Zooplanktons are primary producers in an aquatic ecosystem.
$(2)$ Decomposition is largely an oxygen requiring process.
$(3)$ In a natural ecosystem, fishes, wolf, etc. are carnivore.
$(4)$ The amount of energy decreases in each successive trophic level.