OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The mitochondria would begin making oxygen
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The mitochondria would begin making glucose
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The mitochondria would produce limited ATP
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The mitochondria would prevent enzyme production
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Detailed explanation-1: -If oxygen is present, the pathway will continue on to the Krebs cycle and oxidative phosphorylation. However, if oxygen is not present, some organisms can undergo fermentation to continually produce ATP.
Detailed explanation-2: -Without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration.
Detailed explanation-3: -In the absence of oxygen cells will utilize anaerobic respiration to generate ATP. The two types of anaerobic respiration are ethanol fermentation and lactic acid fermentation. These processes regenerate the electron carriers NAD. Anaerobic respiration is similar to aerobic respiration in that they both generate ATP.
Detailed explanation-4: -Hypoxia diminishes ATP utilization by downregulating protein translation and the activity of the Na-K-ATPase. Hypoxia diminishes ATP production in part by lowering the activity of the electron transport chain through activation of the transcription factor hypoxia-inducible factor-1.