Answer:
A. DNA repair
Explanation:
The p53 protein acts as a tumor remover by controlling a set of genes required for the cell division. This protein protects the genome by <u>restricting abnormal cells to proliferate</u> avoiding the replication of damaged DNA. The first resource the protein uses and prometes is DNA repair and if the DNA has irreparable damage, t<u>he last resource used by this protein is</u><u> apoptosis</u>.
<span>It
considered that all terrestrial plant species that exist today have evolved
from Rhyniophyta (a type of spore plants, compiled by the most primitive forms
of vascular). Now terrestrial plants presents by the Moss family, psilotaceae, lycopsids,
class of the Horsetail, fern, gymnosperms and flowering plants. Based on the cladogram, It assumed that the
ancestors of all existing plants are algae, particularly green.</span>
Answer:
The correct answer is - Histones are positively charged.
Explanation:
Histone is an octamer that is made up of four proteins and each protein has 2 copies. These proteins are H2A, H2B, H3, and H4. Histone proteins are mainly made up of positively charged amino acids like arginine and lysine which gives histone proteins an overall positive charge.
This positive charge of histone plays important role in the binding of DNA around it because phosphate group present in the DNA makes DNA negatively charged molecules that are attracted by positively charged histone protein by electrostatic interaction.
This interaction results in the wrapping of DNA around the histone proteins and then compaction of DNA into chromatin. Therefore the right answer is- histones are positively charged.
Answer: Carbon fixation is the process by which inorganic carbon is added to an organic molecule. Carbon fixation occurs during the light independent reaction of photosynthesis and is the first step in the C3 or Calvin Cycle.
Answer:
dead fish.....................
