{"id":5450,"date":"2024-04-15T02:13:44","date_gmt":"2024-04-15T02:13:44","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=5450"},"modified":"2024-04-15T02:13:44","modified_gmt":"2024-04-15T02:13:44","slug":"the-three-carbon-molecules-broken-down-from-six-carbon-molecules-of-glucose-during-the-first-step-in-the-process-of-nutrition-inall-organisms-is-called-a-butane-b-ethane-c-pyruvate-d-methane","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-three-carbon-molecules-broken-down-from-six-carbon-molecules-of-glucose-during-the-first-step-in-the-process-of-nutrition-inall-organisms-is-called-a-butane-b-ethane-c-pyruvate-d-methane\/","title":{"rendered":"The three-carbon molecules broken down from six-carbon molecules of glucose during the first step in the process of nutrition inall organisms is called A. butane B. ethane C. pyruvate D. methane"},"content":{"rendered":"

[amp_mcq option1=”butane” option2=”ethane” option3=”pyruvate” option4=”methane” correct=”option3″]<\/p>\n

The correct answer is C. pyruvate.<\/p>\n

Pyruvate is a three-carbon molecule that is formed when glucose is broken down in the first step of cellular respiration. It is then used in the Krebs cycle, which is a series of chemical reactions that produce energy.<\/p>\n

Butane is a four-carbon molecule, ethane is a two-carbon molecule, and methane is a one-carbon molecule. These molecules are not involved in the process of cellular respiration.<\/p>\n

Here is a diagram of the glycolysis pathway, which is the first step in cellular respiration:<\/p>\n

As you can see, glucose is broken down into two pyruvate molecules. These pyruvate molecules are then used in the Krebs cycle, which is the next step in cellular respiration.<\/p>\n","protected":false},"excerpt":{"rendered":"

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