Question

Explain how the reading connects to the concept of MOLECULES?





All the cells of the body take in molecules from food and air—including glucose, amino acids, and oxygen—in order to both release the energy the cells need to be provided with the raw materials for growth and repair. Although molecules are tiny, they still vary immensely in scale. Protein molecules and starch molecules are larger molecules that must be broken down into smaller molecules to enter the circulatory system and thus the cells. Glucose, amino acids, and oxygen molecules are much smaller molecules. The food we eat is primarily composed of varying proportions of carbohydrates, proteins, and fats. These components of food play an essential role in human metabolism. Fiber, another very important component of food aids in digestion.

Answer 1

Answer:

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Explanation:

Beginning with energy sources obtained from their environment in the form of sunlight and organic food molecules, eukaryotic cells make energy-rich molecules like ATP and NADH via energy pathways including photosynthesis, glycolysis, the citric acid cycle, and oxidative phosphorylation.

Answer 2

Answer:

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