for professor ryan

As you complete your weekly reading, answer the questions below.

Please review the following writing guidelines prior to answering the questions:

· For information on how to avoid plagiarism, please visit the Writing Center in the Student Success Center.

Part 1: Energy is the capacity to do work. Like our planes, trains, and automobiles, living organisms need energy to function.

After reading pages 76 – 77 in your textbook, explain how energy flows one-way from the environment into living organisms.

10 points

Answer:

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Part 2: For the numerous chemical reactions to occur in a living cell, enzymes are needed.

After reading pages 80 – 81 in your textbook, discuss how enzymes work. Include in your discussion the following terms: substrate, active site, enzyme, and activation energy.

10 points

Answer:

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Part 3: As these numerous chemical reactions occur in a cell, they take the form of either a linear pathway or a cycle.

After reading page 82 in your textbook, describe the linear pathway and a cyclic pathway.

10 points

Answer:

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Part 4: For cells to operate in metabolic pathways, they must move substances in and out.

After reading pages 84 – 87 in your textbook, define concentration and concentration gradient.

10 points

Answer:

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Part 5: The two major metabolic reactions that occur in cells are photosynthesis and cellular respiration. Photosynthesis only occurs in cells that can use the energy from sunlight to make chemicals, plant cells. Cellular respiration occurs in all cells.

After reading pages 64, 65, 97, and 112 in your textbook, describe the structure of the following.

10 points

Describe the structure of a chloroplast.

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5 points

Describe the structure of a mitochondria.

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5 points

Part 6: Photosynthesis is incredibly important for all life. It takes place within a chloroplast, and is the process that converts the energy of sunlight into chemical energy that is used to fuel life on earth.

After reading pages 97 –100 in your textbook, outline the reactions of the following.

10 points

Outline the light-dependent reactions of photosynthesis.

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5 points

Outline the light-independent reactions of photosynthesis.

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5 points

Part 7: We have learned that mitochondria are the powerhouse of all cells! The proper functioning of these complex structures is critical. Unfortunately, things can and do go wrong!

After reading pages 109 – 119 in your textbook, state which process (glycolysis, Krebs cycle, or Electron Transfer Phosphorylation) is not properly functioning in each scenario.

10 points

Carbon dioxide is not being produced.

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5 points

Hydrogen ions are not properly moving across the mitochondrial membrane.

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5 points

You will earn additional points if you correctly submit the worksheet to the assignment dropbox.

5 points

You will earn additional points if you use proper sentence structure, grammar and spelling.

5 points