8 Which of the following best describes the electron transpo

8) Which of the following best describes the electron transport chain in cellular respiration A) a chain of glucose molecules located in the cristae B) a collection of enzymes used to make ADP C) a series of proteins located in the cytoplasm group of enzymes that create a concentration gradient to create ATP D) a 9) When i not present, muscle cells switch to lactic acid fermentation. A) Glucose C) ATP D) oxygen B) Carbon Dioxide 10) Which of the following intermediary metabolites enters the citric acid cycle and is formed, in part, by the removal of a carbon (co2 from one molecule of pyruvate? D) glyceraldehydes-3-phosphate A) oxaloacetate E) acet CoA B) citrate C) lactate 11) Where does glycolysis take place? C) mitochondrial inner membrane A) cytosol B) mitochondrial intermembrane D) mitochondrial outer membrane E) mitochondrial matrix space

Solution

8) D a group of enzymes that create a concentration gradient to create ATP

EXPLINATION

Electron transport chain used NADH AND FADH2 to make a proton gradient in the intermembrane space of mitochondria ... this proton gradient generates the EMF and the protons are made to pass through the ATPASE enzyme , for flow of 3 protons across the ATPASE one ATP molecule is produced

9) D) oxygen

Since in absense of oxygen metabolism will switch from aerobic to anaerobic respiration also called fermentation

10 E) acetyl -coA ...

The step is catalysed by pyruvate decarboxylase ... which removes carbon diodxide from pyruvate

11 A) cytosol

FACT BASED QUESTION HAS NO EXPLINATION JUST TO BE REMEMBERED ...

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