BIO340 Midterm #1 | ACTUAL EXAM 2025 LATEST UPDATED |
COMPLETE QUESTIONS WITH 100% RATED CORRECT ANSWERS |
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The two chromosomes in each of the 22 homologous pairs in our cells - (answers)show identical
banding patterns after staining
what are the three functional elements required for replication and stable inheritance of
chromosome - (answers)origins of replication, centromeres, telomeres
in which phase of the eukaryotic cell cycle is the DNA in its most highly condensed form? -
(answers)M phase
which of the following is true regarding heterochromatin in a typical mammalian cell? -
(answers)Heterochromatin is characterized by its high degree of compaction
in the beads on a string model, the bead is made up of: - (answers)8 histone proteins
the chromatin remodeling complexes play an important role in chromatin regulation in the
nucleus. They.. - (answers)All of the above.
- can slide nucleosome on DNA
-Have ATPase activity
-interact with histone chaperones
-can remove or exchange core histone subunits
There are five major types of histones in eukaryotic cells. One of these is not part of the structure
of nucleosomes and is thought to participate in forming the 30 nm condensed chromatin fiber.
which histone is this? - (answers)H1
, Nucleosomes that are positioned like beads on a string over a region of DNA can interact to form
higher orders of chromatin structure. which of the following factors can contribute to the
formation of the 30nm chromatin fiber from these nucleosome? - (answers)All of the above
- interaction that involve the histone tails of neighboring nucleosomes
-interactions of the linker histone H1 with each nucleosome
-binding of proteins to DNA or the histones
-ATP-dependent function of chromatin remodeling complexes
the acetylation of lysine on the histone tails.. - (answers)can be performed on methylated lysine
only after they are first demthylated
Lamprush chromosomes.. - (answers)are thought to have a structure that is relevant to
mammalian chromosomes in interphase
A specific general transcription factor recognizes the TATA box in RNA polymerase II
promoters. It is.. - (answers)the first protein to bind to DNA during the formation of the pre-
initiation transcription complex of RNA polymerase II
the TATA sequence is found only several nucleotides away from the start site of transcription.
This is most probably relates to which of the following? - (answers)the number of hydrogen
bonds between A and T in DNA make it easier for the two DNA strands to separate
During transcription of DNA to RNA: - (answers)an RNA polymerase must first bind to a
promoter sequence
which of the following is directed by transcription activators in eukaryotic cells in order to
provide a more accessible DNA for transcription machinery? - (answers)Nucleosome
remodeling'
histone removal, replacement,modification
after the first and before the second chemical step of RNA splicing the intron of the pre-mRNA -
(answers)Is covalently connected to the 3'exon and has an internal branch in the shape of a lariat
COMPLETE QUESTIONS WITH 100% RATED CORRECT ANSWERS |
GET IT A+
The two chromosomes in each of the 22 homologous pairs in our cells - (answers)show identical
banding patterns after staining
what are the three functional elements required for replication and stable inheritance of
chromosome - (answers)origins of replication, centromeres, telomeres
in which phase of the eukaryotic cell cycle is the DNA in its most highly condensed form? -
(answers)M phase
which of the following is true regarding heterochromatin in a typical mammalian cell? -
(answers)Heterochromatin is characterized by its high degree of compaction
in the beads on a string model, the bead is made up of: - (answers)8 histone proteins
the chromatin remodeling complexes play an important role in chromatin regulation in the
nucleus. They.. - (answers)All of the above.
- can slide nucleosome on DNA
-Have ATPase activity
-interact with histone chaperones
-can remove or exchange core histone subunits
There are five major types of histones in eukaryotic cells. One of these is not part of the structure
of nucleosomes and is thought to participate in forming the 30 nm condensed chromatin fiber.
which histone is this? - (answers)H1
, Nucleosomes that are positioned like beads on a string over a region of DNA can interact to form
higher orders of chromatin structure. which of the following factors can contribute to the
formation of the 30nm chromatin fiber from these nucleosome? - (answers)All of the above
- interaction that involve the histone tails of neighboring nucleosomes
-interactions of the linker histone H1 with each nucleosome
-binding of proteins to DNA or the histones
-ATP-dependent function of chromatin remodeling complexes
the acetylation of lysine on the histone tails.. - (answers)can be performed on methylated lysine
only after they are first demthylated
Lamprush chromosomes.. - (answers)are thought to have a structure that is relevant to
mammalian chromosomes in interphase
A specific general transcription factor recognizes the TATA box in RNA polymerase II
promoters. It is.. - (answers)the first protein to bind to DNA during the formation of the pre-
initiation transcription complex of RNA polymerase II
the TATA sequence is found only several nucleotides away from the start site of transcription.
This is most probably relates to which of the following? - (answers)the number of hydrogen
bonds between A and T in DNA make it easier for the two DNA strands to separate
During transcription of DNA to RNA: - (answers)an RNA polymerase must first bind to a
promoter sequence
which of the following is directed by transcription activators in eukaryotic cells in order to
provide a more accessible DNA for transcription machinery? - (answers)Nucleosome
remodeling'
histone removal, replacement,modification
after the first and before the second chemical step of RNA splicing the intron of the pre-mRNA -
(answers)Is covalently connected to the 3'exon and has an internal branch in the shape of a lariat
