Mitosis and the cell cycle: แบบฝึกหัด

• a.Growth of the organism
• b.Production of genetically identical daughter cells
• c.Production of haploid gametes for sexual reproduction
• d.Repair of damaged tissues

• a.

  Interphase followed by Prophase

• b.

  Anaphase followed by Telophase

• c.

  Metaphase followed by Anaphase

• d.

  Prophase followed by Metaphase

• a.Metaphase; followed by the separation of sister chromatids to opposite poles during anaphase.
• b.Anaphase; followed by the chromosomes decondensing and the nuclear envelope reforming during telophase.
• c.Metaphase; followed by the cell membrane pinching in to divide the cytoplasm during cytokinesis.
• d.Prophase; followed by the chromosomes lining up at the equator during metaphase.

• a.

  It regulates body temperature; it is hard to treat because PET scans cause damage to brain tissue.

• b.

  It is responsible for complex thought; it is hard to treat because CT scans cannot penetrate the skull.

• c.

  It coordinates muscle activity and balance; it is hard to treat because it is located in the cerebral hemispheres.

• d.

  It controls unconscious activities like heart rate; it is hard to treat because it is physically inaccessible and deep within the brain.

• a.

  The myelin sheath; the signal crosses the dendron via diffusion.

• b.

  The effector; the signal crosses the axon via electrical impulses.

• c.

  The sensory receptor; the signal crosses the reflex arc via hormones.

• d.

  The relay neurone in the CNS; the signal crosses the synapse via neurotransmitters.

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