Of the metabolic pathways listed below, which is the only pathway found in all organisms?

     Question 1
Of the metabolic pathways listed below, which is the only pathway found in all organisms?

   A.    the citric acid cycle
   B.    fermentation
   C.    the electron transport chain
   D.    cellular respiration
   E.    glycolysis

Question 2
     A small amount of ATP is made in glycolysis by which of the following processes?

   A.    attachment of a free inorganic phosphate group to ADP to make ATP
   B.    transfer of electrons and hydrogen atoms to NAD+
   C.    transport of electrons through a series of carriers
   D.    transfer of a phosphate group from a fragment of glucose to ADP by substrate-level phosphorylation
   E.    harnessing energy from the sun

   Question 3    
     Which one of the following best describes the electron transport chain?

   A.    Acetyl CoA is fully oxidized to carbon dioxide
   B.    Electrons are passed from one carrier to another, releasing a little energy at each step
   C.    Glucose is broke down to a three-carbon compound in preparation for the citric acid cycle
   D.    Electrons are pumped across a membrane by active transport
   E.    Hydrogen atoms are added to carbon dioxide to make an energy-rich compound

Question 4
     During respiration in a eukaryotic cell, reactions of glycolysis occur ________________.

   A.    in the intermembrane space of the mitochondrion
   B.    across the inner membrane of the mitochondrion
   C.    in the cytosol
   D.    in the matrix of the mitochondrion
   E.    in the inner membrane of the mitochondrion

Question 5
     Most of the ATP produced in cellular respiration comes from which of the following processes?

   A.    the citric acid cycle
   B.    reduction of NADH
   C.    substrate-level phosphorylation
   D.    oxidative phosphorylation
   E.    glycolysis

Question 6 text   
     In the overall process of glycolysis and cellular respiration, ___________ is oxidized and _______________ is reduced.

   A.    ATP...oxygen
   B.    carbon dioxide...water
   C.    glucose...ATP
   D.    oxygen...ATP
   E.    glucose...oxygen

Question 7 text   
     During respiration in a eukaryotic cell, reactions of the citric acid cycle occur _______________.

   A.    in the intermembrane space of the mitochondrion
   B.    in the cristae of the mitochondrion
   C.    in the cytosol
   D.    in the matrix of the mitochondrion
   E.    across the inner membrane of the mitochondrion

Question 8   
     The function of cellular respiration is to __________.

   A.    reduce carbon dioxide
   B.    extract carbon dioxide from the atmosphere
   C.    extract usable energy from glucose
   D.    produce carbohydrates
   E.    synthesize macromolecules from monomers

Question 9   
     

A molecule becomes more oxidized when it _____________________.

   A.    changes shape
   B.    gains a hydrogen ion
   C.    gains an electron
   D.    loses an electron
   E.    loses a hydrogen ion

Question 10
     Sports physiologists at an Olympic training center wanted to monitor athletes to determine at what points their muscles were functioning anaerobically. They could do this by checking for the buildup of which of the following compounds?

   A.    carbon dioxide
   B.    oxygen
   C.    ATP
   D.    ADP
   E.    lactate