Answer:
A. people from different cultures and living at different times can contribute to scientific knowledge.
Explanation:
B) They supply the body’s cells with oxygen
The Central Nervous System is made up of the brain and the spinal cord.
Answer:
C.)He believed landing a man on the moon would show the Soviet Union that the US was more powerful
Explanation:
This was the time of the Cold War, and America and the Soviet Union were rivals.
Answer:
Acetylation of histone tails is a reversible process.
DNA is not transcribed when chromatin is packaged tightly in a condensed form.
Methylation of histone tails in chromatin can promote condensation of chromatin.
Acetylation of histone tails in chromatin allows access to DNA for transcription.
Eukaryotic chromatin structure is a highly complex assembly which needs to be simplified in order to undergo process of transcription. Eukaryotic chromatin structure is highly condensed in nature and DNA cannot be access for transcription. Actylation of histone tails is a process in which breaks the bond of attraction between adjacent nucleosomes. It results in chromatin being condensed attains a loose form. Transcription of DNA can occur in a loose chromatin. Methylation can promote condensation or decondensation of chromatin structure depending upon the methyl group present in the histone.
