Molecular Biology Exam questions
and answers graded A+
Short micro RNAs (miRNAs) - ANS✅✅are involved in regulation of gene expression
In eukaryotes, tandemly repeated genes encode - ANS✅✅rRNAs
All the following statements about heterochromatin except:
All the following statements about heterochromatin except:
It is a dark-staining area of a chromosome.
It is usually transcriptionally active.
It is often simple sequences of DNA.
It is a region of condensed chromatin. - ANS✅✅it is usually transcriptionally active
The less condensed form of chromatin is and the inactive form of chromatin is -
ANS✅✅Euchromatin/ Heterochromatin
If DNA structure is described as "beads-on-a-string," a "bead" is a [A]. - ANS✅✅nucleosome core
particle
Histone modifications play integral roles in chromatin condensation and function. Which of the
following is not considered to be a histone modification?
acetylation
methylation
phosphorylation
prenylation - ANS✅✅prenlyation
All of the following can be found in chromatin except:
DNA
RNA
histones
transcription factors - ANS✅✅RNA
and answers graded A+
Short micro RNAs (miRNAs) - ANS✅✅are involved in regulation of gene expression
In eukaryotes, tandemly repeated genes encode - ANS✅✅rRNAs
All the following statements about heterochromatin except:
All the following statements about heterochromatin except:
It is a dark-staining area of a chromosome.
It is usually transcriptionally active.
It is often simple sequences of DNA.
It is a region of condensed chromatin. - ANS✅✅it is usually transcriptionally active
The less condensed form of chromatin is and the inactive form of chromatin is -
ANS✅✅Euchromatin/ Heterochromatin
If DNA structure is described as "beads-on-a-string," a "bead" is a [A]. - ANS✅✅nucleosome core
particle
Histone modifications play integral roles in chromatin condensation and function. Which of the
following is not considered to be a histone modification?
acetylation
methylation
phosphorylation
prenylation - ANS✅✅prenlyation
All of the following can be found in chromatin except:
DNA
RNA
histones
transcription factors - ANS✅✅RNA
