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Have-a-Java Quiz 10 - Electron Transport System:
 
1.The ETS (Electron Transport System) is located:
    A) in the matrix of the mitochondrion
    B) on the cristae of the mitochondrion
    C) on the outer membrane of the mitochondrion
    D) in the cytoplasm

 
2.The ETS receives electrons from:
    A) FADH2
    B) FAD
    C) NAD+
    D) ADP

 
3.Whan a component of the ETS receives electrons, it is said to be:
    A) neutralized
    B) hydrolyzed
    C) oxidized
    D) reduced

 
4.The mitochondrion is surrounded by ____ membranes.
    A) 1
    B) 2
    C) 3
    D) 4

 
5.As electrons travel down the ETS, they release:
    A) ADP
    B) ATP
    C) energy
    D) hydrogen ions

 
6.The energy released by electrons moving down the ETS causes the pumping of:
    A) ADP
    B) NAD+
    C) water
    D) H+

 
7.Hydrogen ions are pumped from the __________ to the ___________.
    A) matrix; intermembrane space
    B) matrix; cytoplasm
    C) cytoplasm; matrix
    D) cytoplasm; intermembrane space

 
8.H+ move down their concentration gradient by ___________ back into the matrix.
    A) osmosis
    B) facilitated diffusion
    C) simple diffusion
    D) active transport

 
9.When the H+ re-enter the matrix, they activate an enzyme called:
    A) cytochrome oxidase
    B) pepsin
    C) protease
    D) ATP synthase

 
10.The final electron acceptor is:
    A) oxygen
    B) carbon dioxide
    C) NAD+
    D) FAD

 
11.When electrons are transferred to oxygen at the end of the ETS, they also unite with H+ to produce:
    A) carbon dioxide
    B) glucose
    C) water
    D) ADP

 
12.Cyanide is a metabolic poison that stops the ETS by directly blocking the actions of:
    A) NAD+
    B) NADH
    C) ATP synthase
    D) cytochrome oxidase

 
13.Each NADH entering the ETS from Kreb's cycle produces:
    A) 1 ATP
    B) 2 ATP
    C) 3 ATP
    D) 4 ATP

 
14.Each FADH2 entering the ETS from Kreb's cycle produces:
    A) 1 ATP
    B) 2 ATP
    C) 3 ATP
    D) 4 ATP

 
15.Oxygen is needed in the ETS to:
    A) prevent a pile up of hydrogen ions
    B) prevent a pile up of NAD+
    C) prevent a pile up of electrons
    D) prevent a pile up of ADP



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