QuestionSBA
QuestionChoice
The histone octamer is positively charged so that it is attracted to the negatively charged double-stranded DNA.
10000540
e
Negatively charged double-stranded DNA wrapped around a negatively charged histone octamer
QuestionChoice
The DNA in a nucleosome is double-stranded - not single-stranded.
10000538
c
Negatively charged single-stranded DNA wrapped around a positively charged histone octamer
QuestionChoice
This structure is almost correct. However, the charges on the DNA and histone octamer are reversed. DNA is negatively charged and the histone octamer is positively charged.
10000537
b
Positively charged double-stranded DNA helix wrapped around a negatively charged histone octamer
QuestionChoice
A nucleosome is the basic structural unit of DNA packaging, and is the basis of how such long strands of DNA can fit within cell nuclei. They consist of negatively charged double-stranded DNA tightly wrapped around a positively charged core particle called a histone octamer - which is made up of eight histones.
10000536
a
Negatively charged double-stranded DNA helix wrapped around a positively charged histone octamer
QuestionChoice
The DNA in a nucleosome is double-stranded, not single-stranded, and the core particle is a histone octamer (eight histones), not a histone pentamer (five histones).
10000539
d
Negatively charged single-stranded DNA wrapped around a positively charged histone pentamer
Concept
Chapter
2693
3784
DNA
Topic
155
Structure and function
12654
Which of the following options correctly describes the structure of a nucleosome?
a