Which is the correct order of the steps of glucose oxidation in eukaryotes? glyc

Question

Which is the correct order of the steps of glucose oxidation in eukaryotes? glycolysis > electron transport chain > ATP synthesis > citric acid cycle glycolysis > citric acid cycle > ATP synthesis > electron transport chain glycolysis > citric acid cycle > electron transport chain > ATP synthesis glycolysis > electron transport chain > citric acid cycle > ATP synthesis Which of the following statements about mitochondria is FALSE? The most abundant protein in the outer mitochondrial membrane is a porin needed for the movement of ions and small hydrophilic molecules. Although proteins are imported into the mitochondria, proteins encoded by the mitochondrial genome are not exported to the cytoplasm. Mitochondria are thought to be evolutionarily derived from eubacteria. Mitochondria contain their own genome, which encodes all genes required for proper mitochondrial function. Which of the following regarding glucose catabolism is NOT true? In the absence of oxygen, glycolysis is followed by fermentation, which is required to regenerate NAD+ for continued glycolysis. Oxygen is required for the maximal production of ATP from a glucose molecule. Glycolysis is primarily regulated at the step catalyzed by phosphofructokinase-1. The end products of glycolysis are six molecules of carbon dioxide, six molecules of water and 6 NADH and 2 FADH2. Which of the following does NOT provide evidence for the endosymbiont hypothesis for mitochondrial origin? mitophagy structure of mitochondrial ribosomes mitochondrial DNA sequences mitochondrial double membrane Which of the following statements regarding glucose oxidation is FALSE? Electron pairs donated by NADH lead to the synthesis of more ATP than do electron pairs donated by FADH₂. The citric acid cycle metabolizes acetyl-coA to carbon dioxide and generates many high energy electrons. Electron transport begins with NADH and FADH₂ and reduces molecular oxygen to water while building a proton gradient across the mitochondrial inner membrane. All four stage of aerobic glucose oxidation occur on the inner mitochondrial membrane. Which is the correct order of the steps of glucose oxidation in eukaryotes? glycolysis > electron transport chain > ATP synthesis > citric acid cycle glycolysis > citric acid cycle > ATP synthesis > electron transport chain glycolysis > citric acid cycle > electron transport chain > ATP synthesis glycolysis > electron transport chain > citric acid cycle > ATP synthesis

Explanation / Answer

1.Which is the correct order of the steps of glucose oxidation in eukaryotes?

glycolysis > citric acid cycle > electron transport chain > ATP synthesis

2.Which of the following statements about mitochondria is FALSE?

The most abundant protein in the outer mitochondrial membrane is a porin needed for the movement of ions and small hydrophilic molecules.

the outer motochondrial membrane is highly permeable, it does not require transport protein for transport of ions and hydrophilic molecules.

3. Which of the following regarding glucose catabolism is NOT true?

The end products of glycolysis are six molecules of carbon dioxide, six molecules of water and 6 NADH and 2 FADH2.

because the end products of glycolysis are 2 ATP and 2 NADH molecules.

4.Which of the following does NOT provide evidence for the endosymbiont hypothesis for mitochondrial origin?

mitophagy, it occurs only in yeast and animals, it is a selective degradation of mitochondria by autophagy.

5.Which of the following statements regarding glucose oxidation is FALSE?

All four stage of aerobic glucose oxidation occur on the inner mitochondrial membrane.

glycolysis occurs in cyosol or cytoplasmic matrix in both eukaryotes and prokaryotes.

kreb cycle : in prokaryotes( cytosol) and in eukaryotes( mitochondrial matrix)

oxidative phophorylation : prokaryotes (plasma membrane) and in eukaryotes(inner mitochondrial membrane)

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