객관식
Where is insulin produced in the human body?
152
views
10. Cell Signaling
Introduction to Cell Signaling
객관식
In the context of cell signaling and chromatin structure, how many total polypeptide chains are present in a single nucleosome core particle?
A
2
B
8
C
16
D
4
검증된 단계별 안내1
Understand the structure of a nucleosome core particle: A nucleosome consists of DNA wrapped around a core of histone proteins. The histone core is made up of eight polypeptide chains.
Recall the composition of histones: The histone core is formed by two copies each of four types of histones: H2A, H2B, H3, and H4. This totals to 8 polypeptide chains.
Visualize the arrangement: The histones are organized in pairs, forming a histone octamer. DNA wraps around this octamer to form the nucleosome.
Relate the polypeptide chains to the nucleosome core particle: Since each histone protein is a polypeptide chain, the total number of polypeptide chains in the nucleosome core particle is 8.
Confirm the answer: Based on the structure and composition of the nucleosome core particle, the correct number of polypeptide chains is 8.
관련 영상
관련 실천
