Question

Each chromosome is a single molecule of ______ whose extraordinarily long length can be compacted by as much as ______-fold during ______ and tenfold more during ______. This is accomplished by binding to ______ that help package the DNA in an orderly manner so it can fit in the small space delimited by the ______. The structure of the DNA-protein complex, called ______, is highly ______ over time.

1) 10,000
2) chromosome
3) mitosis
4) 100
5) different
6) nuclear envelope
7) 1000
8) DNA
9) nucleolus
10) cell cycle
11) dynamic
12) proteins
13) cell wall
14) interphase
15) similar
16) chromatin
17) lipids
18) static

Answer 1

In eukaryotic cells, chromosomes are compacted by binding to proteins called histones and forming nucleosomes. This compacted structure allows the DNA to fit inside the nucleus. The DNA-protein complex is highly dynamic and changes during different stages of the cell cycle.

Step-by-step explanation:

In eukaryotic cells, each chromosome is a single molecule of DNA whose long length is compacted during certain stages of the cell cycle. The compaction is achieved by binding to proteins called histones that help package the DNA into structures called nucleosomes. These nucleosomes are further compacted into a 30-nm fiber, and during mitosis, the chromosomes are at their most compact state, approximately 700 nm in width. The overall structure of the DNA-protein complex is highly dynamic over time.

Each chromosome is a single molecule of DNA whose extraordinarily long length can be compacted by as much as 10,000-fold during mitosis and tenfold more during interphase. This is accomplished by binding to proteins that help package the DNA in an orderly manner so it can fit in the small space delimited by the nuclear envelope. The structure of the DNA-protein complex, called chromatin, is highly dynamic over time.