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Chapter 8: Q2. (page 150)

Question: How would the processes of catabolism and anabolism relate to Figure 8.5c?

Short Answer

Expert verified

Catabolism is the breakdown of large molecules into smaller molecules. Catabolism is illustrated in the above figure, from top to bottom.

On the other hand, anabolism is the synthesis of larger molecules from smaller molecules. Anabolism is demonstrated as one moves from the bottom to the top of the figure.

Step by step solution

01

Metabolism

The chemical process that converts the food into energy is called metabolism.The energy produced is used to drive the cellular processes in the cell. Thus, metabolism is the life-sustaining process that occurs in all living organisms.

Metabolism is divided into two processes; catabolism and anabolism.

02

Catabolism in the figure

Catabolism is a type of metabolism in which larger or complex molecules are degraded to produce smaller or simpler molecules accompanied by the release of energy.

The process of catabolism is exemplified in the figure from top to bottom. This is because a large glucose molecule is broken down into simpler molecules.

03

Anabolism in the figure

Anabolism is a type of metabolism in which smaller and simpler molecules are used to synthesize large and complex molecules accompanied by energy storage.

The process of anabolism is exemplified in the figure from the bottom to the top. This is because the smaller molecules are used to produce glucose molecules.

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Most popular questions from this chapter

Question: If an enzyme is added to a solution where its substrate and product are in equilibrium, what will occur?

  1. Additional substrate will be formed.
  2. The reaction will change from endergonic to exergonic.
  3. The free energy of the system will change.
  4. Nothing; the reaction will stay at equilibrium.

Question: Explain what is happening in this photo in terms of kinetic energy and potential energy. Include the energy conversions that occur when the penguins eat fish and climb back up on the glacier. Describe the role of ATP and enzymes in the underlying molecular process, including what happens to the free energy of some of the molecules involved.

Which of the following has more free energy: glutamic acid + ammonia + ATP or glutamine + ADP + Pi? Explain.

Question: Choose the pair of terms that correctly completes this sentence: Catabolism is to anabolism as __________ is to _________.

  1. exergonic; spontaneous
  2. exergonic; endergonic
  3. free energy; entropy
  4. work;energy

Question: A researcher has developed an assay to measure the activity of an enzyme present in pancreatic cells growing in culture. She adds the enzyme鈥檚 substrate to a dish of cells and then measures the appearance of reaction products. The results are graphed as the amount of product on the y-axis versus time on the x-axis. The researcher notes four sections of the graph. For a short period of time, no products appear (section A). Then (section B) the reaction rate is quite high (the slope of the line is steep). Next, the reaction gradually slows down (section C). Finally, the graph line becomes flat (section D). Draw and label the graph, and propose a model to explain the molecular events occurring at each stage of this reaction profile.
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