Palm Beach State College Biology Discussion

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Chapter 8.4 – Chapter 8 Discussion

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Using the information in Chapter 8 answer the following questions:

  1. Describe the basic principles of bioenergetics in animal cell.
  2. How is the flow and transformation of energy different in photosynthetic cell?
  3. What is the role of ATP and enzymes in energy production and/or starage?

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter 8 materials.
  • Your original post should be a minimum of 150 words.

Chapter 12.5 – Chapter 12 Discussion

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The continuity of life is based on heritable information in the form of DNA, for this discussion please answer the following.

  1. Explain how the process of Mitosis makes and transfers DNA information to produce genetically identical daughters cells

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter 12 materials.
  • Your original post should be a minimum of 150 words.

Chapter 13.5 – Chapter 13 Discussion

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Many species can reproduce either sexually or asexually. Explain what you think might be the evolutionary significance of the switch from asexual to sexual reproduction that occurs in some organisms when the environment becomes unfavorable.

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter 13 materials.
  • Your original post should be a minimum of 150 words.

Chapter 14.4 – Chapter 14 Discussion

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Over the past half-century, there has been a trend in the US and other countries for people to marry and start families later in life than did their parents and grandparents. What effect might this trend have on incidence (frequency) of late-acting dominant lethal alleles in population?

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter 14 materials.
  • Your original post should be a minimum of 150 words.

Chapter 16.7 – Chapter 16 Discussion

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Describe how the structure of DNA is correlated with its role as the molecular basis of inheritance

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter materials.
  • Your original post should be a minimum of 150 word

Chapter 17.5 – Chapter 17 Discussion

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Some mutations result in proteins that function well at one temperature but are nonfunctional at a different (usually higher) temperature. Siamese cats have such e “temperature-sensitive” mutation in a gene that makes dark pigment for fur. The mutation results in a breed’s distinctive point markings, and lighter body color. Using information from this chapter, explain the pattern of cat’s fur pigmentation.

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter materials.
  • Your original post should be a minimum of 150 words.

Chapter 22.5 – Chapter 22 Discussion

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Explain how changes to organisms physical environment are likely to result in evolutionary change. Use an example to support your reasoning.

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter materials.
  • Your original post should be a minimum of 150 words.

Chapter 23.7 – Chapter 23 Discussion

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Sickle-cell disease is a genetic disorder that causes abnormal structure of hemoglobin molecule and interferes with its ability to transport oxygen. Although the sickle-cell disease is lethal if not treated, in some regions sickle-cell allele can reach frequencies as high as 15/20%. How can such a harmful allele be so common?

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter materials.
  • Your original post should be a minimum of 150 words.

Chapter 24.5 – Chapter 24 Discussion

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Explain the biological basis for assigning the human population to a single species. Can you think of a scenario by which a second human species could originate in the future?

To receive full credit for this discussion:

  • Begin contributing to the discussions as soon as you study Chapter materials.
  • Your original post should be a minimum of 150 words.
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