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- 1. Multiple ChoiceWith regard to their chromosomes, what is a major difference between prokaryotes and eukaryotes?Eukaryotes are diploid while prokaryotes are haploid.Prokaryotes have DNA located in their cytoplasm, while all the DNA in eukaryotic cells is located inside a membrane bound nucleus.Eukaryotes have linear chromosomes while most prokaryotes contain a single circular chromsome.Prokaryotes compact their DNA to a high degree while eukaryotes maintain the chromosomes in an uncompacted state.
- 2. Multiple ChoiceCellular division is important for which of the following processes?Growth of a multicellular organism.Growth of a multicellular organism.Reproduction of a unicellular organism.A and C only.
- 3. Multiple ChoiceWhich of the following is a correct description for mitosis?Cell division of prokaryotic cells.A sorting mechanism which accompanies cell division in eukaryotic cells.A mechanism which reduces chromosome number from diploid to haploid during gamete formation.The process whereby a eukaryotic cell is created from a prokaryote.
- 4. Multiple ChoiceWhat is the major difference between sexual and asexual reproduction?Sexual reproduction does not require cell division.Asexual reproduction cannot occur in diploid species.Asexual reproduction cannot occur in eukaryotes.Asexual reproduction produces offspring identical to the parent.
- 5. Multiple ChoiceWhere do the spindle fibers connect to the chromosomes?To the centromereTo the kinetochoreTo the centrioleTo the centrosomes
- 6. Multiple ChoiceWhich of the following events does not occur during prophase?Condensation of chromosomes.Formation of the mitotic spindle.Fragmentation of the nuclear membrane.Duplication of the DNA.
- 7. Multiple ChoiceWhat change occurs in chromosome structure between G1 and G2 phases of interphase?By G2, they have become more tightly condensed.Chromosomes in G2 contain two linear pieces of DNA while those in G1 have only one.They begin to be more actively transcribed in G2 than G1.Chromosomes in G2 have a centromere which was not present in G1.
- 8. Multiple ChoiceWhat is a restriction point?A point at which a cell is prevented from proceeding through the cell cycle.A point at which a cell has become committed to proceeding through the cell cycle to cell division.A point at which the cell density in a population has become too high and none of the cells are allowed to divide.
- 9. Multiple ChoiceAt the end of mitosis, the cell has divided into two daughter cells.TrueFalse
- 10. Multiple ChoiceThe best way to identify an X-linked trait in fruit flies is that the trait affects one sex more often than the other.TrueFalse
- 11. Multiple ChoiceGenes on the X or Y chromosomes in humans are not always inherited in a different pattern than are genes on the autosomes.truefalse
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