
Chapter 10!
Quiz by nichole stokes
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12 questions
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- Q1Binary fission in prokaryotes does not require the.....Separation of daughter cells by septum formationElongation of the cellReplication of DNAAssembly of the nuclear envelope45s
- Q2Chromatin is composed of ?RNA and proteinDNA and proteinSister chromatidsChromosomes45s
- Q3What is a nucleosome?A region of a chromosome made up of multiple loops of chromtinA region in the cell's nucleus that contains euchromatinA region of DNA wound around histone proteinsA 30-nm fiber found in chromatin45s
- Q4What is the role of cohesion proteins in cell division?They hold the DNA of the sister chromatids togetherThey help the cell divide into two daughter cellsThey organize the DNA of the chromosome s into highly condensed structuresThey connect mircotubules and chromosomes45s
- Q5The kinetochore is a structure that functions to...Aid in chromosomes cohesionConnect the centromere to microtubulesConnect centrioles to microtubulesAid in chromosome condensation45s
- Q6Separation of the sister chromatids occurs during....ProphasePrometaphaseTelophaseAnaphase45s
- Q7Why is cytokinesis an important part of cell division?It is responsible for the proper separation of the cytoplasmic contentsIt allows cells to halt at checkpointsIt triggers the movement of a cell through the cell cycleIt is responsible for the proper separation of genetic information45s
- Q8Cyclin-dependent kinases (Cdks) are regulated by.....The periodic destruction of cyclinsBoth a and b are correctBipolar attachment of chromosomes to the spindleDNA synthesis45s
- Q9Genetically, proto-oncogenes act in a dominant fashion. This is because....They act in a loss-of-function fashion to turn off the cell cycleThey act in a gain-of-function fashion to turn on the cell cycleThey require that both genomic copies are altered to affect functionThere is only one copy of each proto-oncogene in the genome45s
- Q10The metaphase to anaphase transition involves....Completing DNA replication of centromeres allowing chromosomes to be pulledNew force being generated to pull the chromatids apartLoss of cohesion between sister chromatidsAn increase in force on sister chromatids to pull them apart45s
- Q11The main difference between bacterial cell division and eukaryotic cell division is that....Eukaryotes mark their chromosomes to identify them and bacteria do notNone of the above is correctBacterial DNA replication and chromosome segregation are concerted processes but in eukaryotes they are separated in timeSince bacteria only have one chromosome, they can count the number of copies in the cell45s
- Q12In animals cells, cytokinesis is accomplished by a contractile ring containing actin. The related process in bacteria is.....Cytokinesis, which requires formation of a cell plate via vesicular fusionChromosome segregation, which also appears to use an actin-like proteinSeptation via a ring of FtsZ protein, which is a tubulin-like proteinSeptation via a ring of FtsZ protein, which is a actin-like protein45s