Genomic DNA associated with nuclear packing proteins in chromosomes is called:
A. centromere
B. histone
C. chromatin
D. centrosome
Genomic DNA associated with nuclear packing proteins in chromosomes is called: A. centromere B. histone C....
In eukaryotes, genomic DNA is wrapped around the histone complex to make chromatin. The direct contacts between DNA and the histone beads interfere bindings of the transcriptional factor proteins to their cognate sequence elements, decreasing gene activities. To increase transcriptional activity of the affected genes, the RSC/CRC complex remodels chromatins such that the ________ sequences can be amenable to formation of the transcriptional initiation complex. Select one: a. TBP-binding and TAP-binding b. Shine-Dalgarno c. start codons d. All of these...
Which of the following hypothesizes that the physical and functional status of a certain region of genomic chromatin is dependent upon the patterns of specific histone posttranslational modifications and/or DNA methylation status? a. PTM hypothesis b. Nuclear body hypothesis c. Epigenetic code d. Genetic code
3. Persistence length of DNA and energy cost of bending DNA around histone proteins (a) DNA is stiff because it is a double helix. At room temperature in dilute solution the persistence length of DNA is found to be p-50 nm. Using this persistence length, find the bending spring constant of DNA (b) In chromosomes, DNA molecules are wrapped tightly around histones. Consider wrapping a DNA molecule around a full circle, estimate the energy cost of bending DNA around the...
Identify the most accurate term related to chromatin remodeling. DNA is associated with proteins to form. A is compsed of DNA wrapped around an octamer of histone proteins. An activator can increase transcription by attracting a to the region. Addition of (-COCH_3) groups to histone amino terminal tails results in a/an in gene expression. Removal of acetyl groups from histones results in a/an in gene expression.
Modeling Mitosis and Meiosis Across 2. A structure consisting of microtubule fibers and associated proteins. 3. Gametes contain one copy of each chromosome or one full set (n) and are considered 7. A specialized type of cell division that produces gametes 10. The division of the cytoplasm. 12. Reproductive cells that transmit genes Down 1. Location on chromosomes where microtubules bind during spindle formation. 2. All cells of the body except gametes. 4. Since humans have two full sets of...
The sites of the histone modifications occur on the _______ part of the histone proteins because _____ and thereforce the modifications can be recognized by the proteins that might alter chromatin A. Alpha helicies/these regions are extended away from the nucleosome B. Alpha helicies/ these regions are buried in the interior of the nuclueosome C. Amino terminal/ these regions are buried in the interior of the nuclueosome D. Amino terminal/ these regions are extended away from the nucleosome
QUESTION 1 A nucleosome consists of A. a cluster of histone proteins that are wrapped around the DNA double helix. B. two peptides each of histones H2A, H2B, H3 and H4, wrapped by the DNA double helix. the DNA polymerase complex and the Okazaki fragments of approximately 200 bases in C. length. D. clusters of ribosomal large subunits and small subunits bound to the DNA double helix. E. one of each of the 5 types (H1 - H4) of histone...
Which of the following is NOT a DNA binding protein? Choose one: O A. histone proteins O B. ribosomal proteins O C. transcription factors O D. RNA polymerase
ton is not an energy dependent process in (B)) Falls eukaryotes 43. Histone methylation is associated with Falls gene activation gene silencing Following histones are required during transcription (A) H2A and 2B (B) H3 (C) H4 (D) All of the above (E) H2AZ (c) induction (D) All of the above (E) None of the above 35. 4. DNA methylation silences gene expression AD True (B) Fall Leucine residues in lucine zipper proteins provides h ydrophobic interaction for dimerization (A) True...
Alterations of chromatin of DNA structure that are stable and inheritable in offspring via DNA methylation or alteration of histone proteins is referred to as _____ changes. A. epigenetic B. sensitivity C. mutational D. genetic