Smartworks MCQs I couldn't do Flashcards
Which is false?
A) Nucleosomes convert a DNA molecule into a chromatin thread about one-third the length of the initial DNA.
B) Nucleosomes can be seen in the electron microscope.
C) Nucleosomes are found only in mitotic chromosomes.
D) Nucleosomes represent the first and most fundamental level of chromatin packing.
E) A nucleosome consists of DNA wrapped around eight histone proteins, plus a short segment of linker DNA.
C) Nucleosomes are found only in mitotic chromosomes.
This is false, they are found in all
Identify which statement(s) is/are true regarding telomere characteristics.
A) Telomeres allow duplicated chromosomes to become separated into daughter cells during M phase.
B) Telomeres are found in all living cells.
C) Telomeres cap the ends of linear chromosomes and prevent them from being recognized by the cell as broken DNA in need of repair.
D) Telomeres contain repeated nucleotide sequences that are required to replicate the ends of linear chromosomes.
E) All of the above are true regarding telomere characteristics.
F) Only statements B and D are true regarding telomere characteristics.
G) Only statements C and D are true regarding telomere characteristics.
G) Only statements C and D are true regarding telomere characteristics.
The Encyclopedia of DNA Elements (ENCODE) project aims to discover functional elements in DNA. One technique employed is DNase-seq. This technique employs a DNase enzyme that digests accessible regions of chromatin, while inaccessible regions remain undigested. The undigested DNA is then sequenced. Which of the following is likely true of the DNase-seq results?
A. Unsequenced DNA is likely part of euchromatin.
B. Unsequenced DNA regions were likely bound to nucleosomes.
C. Centromeric DNA is likely to be sequenced in all samples.
D. The sequenced DNA will be the same from cell type to cell type.
A. Unsequenced DNA is likely part of euchromatin.
C. Centromeric DNA is likely to be sequenced in all samples.
