MCDB 101B MIDTERM EXAM |GUARANTEED ACCURATE ANSWERS
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Course
MCDB 101B
Institution
MCDB 101B
Function of histone proteins in DNA - ACCURATE ANSWERS help package DNA into chromatin
Function of nonhistone proteins in DNA - ACCURATE ANSWERS structure, replication, segregation, and gene expression
What charge is histone - ACCURATE ANSWERS positive, basic
What 4 types of histones form ...
MCDB 101B MIDTERM EXAM |
GUARANTEED ACCURATE
ANSWERS
Function of histone proteins in DNA - ACCURATE ANSWERS✔✔
help package DNA into chromatin
Function of nonhistone proteins in DNA - ACCURATE ANSWERS✔✔
structure, replication, segregation, and gene expression
What charge is histone - ACCURATE ANSWERS✔✔ positive, basic
What 4 types of histones form the nucleosome - ACCURATE
ANSWERS✔✔ H2A, H2B, H3, and H4
What are 2 types of nonhistone proteins - ACCURATE ANSWERS✔✔
1. Scaffold
2. Kinetochore (CENP-E)
What is the function of the scaffold protein - ACCURATE
ANSWERS✔✔ structural backbone
What is the function of the CENP-E protein - ACCURATE
ANSWERS✔✔ to power chromosome moments along the spindle
during cell division
, What do CENP-E proteins do during anaphase - ACCURATE
ANSWERS✔✔ move separated sister chromatids toward the spindle
poles
What is the fundamental unit of chromosomal packaging - ACCURATE
ANSWERS✔✔ nucleosomes
What does the linker DNA do? How many bp form the linker DNA -
ACCURATE ANSWERS✔✔ connects one nucleosome to the next; 40
bp
What are 2 models that explain the different levels of compaction in
DNA - ACCURATE ANSWERS✔✔ 1. Nucleosome supercoiling
2. Radial loop-scaffold model
What is the short arm of a chromosome? Whats the long one? -
ACCURATE ANSWERS✔✔ p (petite) is short
Q (queue) is long
What does fluorescent in Situ Hybridization (FISH) do? - ACCURATE
ANSWERS✔✔ helps geneticists characterize genomes
Whats the difference between heterochromatin and euchromatin? -
ACCURATE ANSWERS✔✔ heterochromatin=darker bands due to
tighter packing at these regions
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