The Cell Cycle, Mitosis And Meiosis

38 Questions | Total Attempts: 223

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The Cell Cycle, Mitosis And Meiosis

The Continuity of Life: Cellular Reproduction


Questions and Answers
  • 1. 
    How do the genes in DNA control cell function?
    • A. 

      Genes carry the instructions for cell division.

    • B. 

      Genes carry the instructions for making proteins.

    • C. 

      Genes carry the instructions for running the cell.

    • D. 

      Genes carry the instructions for mutating cells.

    • E. 

      Genes carry the instructions for copying DNA.

  • 2. 
    What is the most important difference between asexual reproduction and sexual reproduction?
    • A. 

      Asexually produced cells are genetically identical. Sexually produced cells are genetically unique.

    • B. 

      Asexual reproduction produces two daughter cells. Sexual reproduction produces one daughter cell.

    • C. 

      Asexual reproduction requires only one organism. Sexual reproduction requires two organisms.

    • D. 

      Asexual reproduction is more common than sexual reproduction.

    • E. 

      Asexual reproduction requires DNA replication. Sexual reproduction does not.

  • 3. 
    How do cells fit long pieces of DNA into a compartment as small as the nucleus?
    • A. 

      The DNA is wrapped around the nucleus.

    • B. 

      The DNA is shortened by abbreviating gene information.

    • C. 

      The DNA is wrapped around histones.

    • D. 

      The DNA is packaged inside centromeres.

    • E. 

      The DNA is cut into smaller pieces.

  • 4. 
    What word is used to describe the exact position of a gene on a chromosome?
    • A. 

      Allele

    • B. 

      Locus

    • C. 

      Histone

    • D. 

      Centromere

    • E. 

      Chromatid

    • F. 

      Telomere

  • 5. 
    What is the function of the telomere?
    • A. 

      Telomeres copy the DNA.

    • B. 

      Telomeres signal the cell when to begin division.

    • C. 

      Telomeres connect two sister chromatids after DNA replication.

    • D. 

      Telomeres contain unique genes.

    • E. 

      Telomeres prevent the ends of chromosomes from being damaged.

    • F. 

      Telomeres coil up the DNA to make it take up less room.

  • 6. 
    Martian invaders come to Earth to conduct tests on human biology students. A Martian tells you that, in his species, n = 62. Assuming their chromosomes are like human chromosomes, he then asks you how many chromosomes are present in each cell of his finger. How do you reply?
    • A. 

      31

    • B. 

      62

    • C. 

      124

    • D. 

      248

  • 7. 
    Compare the cells of a woman's leg muscle to the cells of a baby growing inside her womb. What is the most important difference between them?
    • A. 

      The cells of the woman's leg muscle are larger than the cells of the baby.

    • B. 

      The chromosomes in the cells of the woman's leg muscle are genetically identical to the rest of her body. The baby's cells contain only half of the mother's chromosomes.

    • C. 

      The cells of the woman's leg muscle have differentiated. The cells of the baby have not.

    • D. 

      The cells of the woman's leg muscle are less important than the cells of the baby.

    • E. 

      The cells of the woman's leg muscle are diploid. The cells of the baby are haploid.

    • F. 

      The cells of the woman's leg muscle are not dividing. The cells of the baby are dividing.

  • 8. 
    What must happen before a cell can begin mitosis?
    • A. 

      The chromosomes must be duplicated.

    • B. 

      The nuclear envelope must break up.

    • C. 

      The sister chromatids must be separated.

    • D. 

      The nucleus must divide in two.

    • E. 

      A mitotic spindle must form.

  • 9. 
    The centrosomes move away from each other and the nuclear envelope breaks up during which phase of mitosis?
    • A. 

      Interphase

    • B. 

      Telophase

    • C. 

      Prophase

    • D. 

      Anaphase

    • E. 

      Metaphase

  • 10. 
    The chromosomes line up in the center of the cell during which phase of mitosis?
    • A. 

      Anaphase

    • B. 

      Metaphase

    • C. 

      Telophase

    • D. 

      Interphase

    • E. 

      Prophase

  • 11. 
    The sister chromatids separate and begin moving toward opposite poles of the cell during which phase of mitosis?
    • A. 

      Metaphase

    • B. 

      Anaphase

    • C. 

      Prophase

    • D. 

      Telophase

    • E. 

      Interphase

  • 12. 
    The chromosomes arrive at the poles and nuclear envelopes form during which phase of mitosis?
    • A. 

      Prophase

    • B. 

      Metaphase

    • C. 

      Anaphase

    • D. 

      Telophase

    • E. 

      Interphase

  • 13. 
    At the end of the mitotic (M) phase, the cytoplasm divides in a process called _________________.
    • A. 

      Telophase

    • B. 

      Condensation

    • C. 

      Replication

    • D. 

      Cytokinesis

    • E. 

      Meiosis

  • 14. 
    Which of the following events occurs during prophase?
    • A. 

      Chromosomes line up in the center of the cell.

    • B. 

      The spindle microtubules form.

    • C. 

      Sister chromatids separate.

    • D. 

      The cell is divided in half.

    • E. 

      DNA replication occurs.

    • F. 

      The cell grows.

  • 15. 
    Which specific structure must separate during anaphase in order for sister chromatids to begin moving toward opposite poles?
    • A. 

      Centrioles

    • B. 

      Spindle microtubules

    • C. 

      Centromeres

    • D. 

      Telomeres

    • E. 

      Kinetochores

    • F. 

      Chiasmata

  • 16. 
    Which phase of mitosis comes last during cell division?
    • A. 

      Interphase

    • B. 

      Cytokinesis

    • C. 

      Anaphase

    • D. 

      Telophase

    • E. 

      G1

  • 17. 
    Which cellular structure contributes to the biggest difference between mitosis in plants and mitosis in animals?
    • A. 

      Cell wall

    • B. 

      Mitochondria

    • C. 

      Plasma membrane

    • D. 

      Centrioles

    • E. 

      Chloroplasts

  • 18. 
    Which of the following statements about the daughter cells of prokaryotic fission is true?
    • A. 

      Daughter cells of prokaryotic fission are haploid.

    • B. 

      Daughter cells of prokaryotic fission are diploid.

    • C. 

      Daughter cells of prokaryotic fission each have one-half of the parent cell's DNA.

    • D. 

      Daughter cells are clones of each other.

    • E. 

      Daughter cells of prokaryotic fission are smaller than a regular cell.

  • 19. 
    What do the three major checkpoints for cell division have in common?
    • A. 

      They all prevent cells from becoming haploid.

    • B. 

      They all focus on DNA and chromosomes.

    • C. 

      They all rely on Cdk proteins to stop the cell cycle.

    • D. 

      They all stop the cell from dividing when too small.

    • E. 

      They all stop the cell cycle before mitosis.

  • 20. 
    How are homologous chromosomes defined?
    • A. 

      Homologous chromosomes contain the same genes, but each gene is at a different locus.

    • B. 

      Homologous chromosomes contain the same alleles, but each allele is at a different locus.

    • C. 

      Homologous chromosomes contain the same genes and the same alleles.

    • D. 

      Homologous chromosomes contain the same alleles, but may contain different genes.

    • E. 

      Homologous chromosomes contain the same genes, but may contain different alleles.

  • 21. 
    What is the most important reason for sexual reproduction?
    • A. 

      Sexual reproduction creates new individuals of a species more quickly.

    • B. 

      Sexual reproduction is necessary to make new individuals of a species.

    • C. 

      Sexual reproduction results in better parental care than asexual reproduction.

    • D. 

      Sexual reproduction creates haploid organisms.

    • E. 

      Sexual reproduction creates genetically unique individuals.

  • 22. 
    Many science fiction books and movies have suggested that human cloning will be a dominant mode of reproduction in the future. Which of the following presents a good scientific argument against this practice?
    • A. 

      We cannot properly test the effects of human cloning on an individual and it would be irresponsible to attempt such testing.

    • B. 

      Reproduction by generating clones occurs only in lab settings and not in nature. There must be significant disadvantages to it.

    • C. 

      The large percentage of species making use of sexual reproduction suggests that maintaining genetic variation is important for the evolutionary success of a species.

    • D. 

      Human cloning is wrong because each child is unique and this would create a society in which many people were identical.

    • E. 

      Human clones have never existed and we cannot predict how their presence would affect our society.

  • 23. 
    Meiosis starts with a single diploid cell and produces
    • A. 

      Eight haploid cells.

    • B. 

      Four haploid cells.

    • C. 

      Four diploid cells.

    • D. 

      Two diploid cells.

    • E. 

      Two haploid cells.

  • 24. 
    A cell preparing to undergo meiosis duplicates its chromosomes during
    • A. 

      Interphase

    • B. 

      Anaphase

    • C. 

      Metaphase

    • D. 

      Prophase

    • E. 

      Meiosis II

  • 25. 
    During prophase I of meiosis,
    • A. 

      There are two daughter cells, each with 23 chromosomes.

    • B. 

      There are four haploid daughter cells.

    • C. 

      Homologous chromosomes stick together in pairs.

    • D. 

      Chromosome pairs are positioned in the middle of the cell.

    • E. 

      The homologous chromosomes separate and move towards opposite poles.

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