WorksheetsElectron Transport Chain (ETC)
Total questions: 12
Worksheet time: 6mins
Which of the following is an electron donor for Complex II in electron transport chain?
NAD+
FADH2
NADH
FAD
How do mitochondria keep the chemiosmotic gradient that the electron transport chain relies on?
They bring protons from the cytoplasm into the cell
Scaffold proteins transport protons into the intermembrane space
They constantly pump protons into the intermembrane space
They export protons into the cytoplasm
What is the main job of the electron carriers in cellular respiration?
Transport electrons and hydrogen atoms to the electron transport chain
Provide the reactants for the process of cellular respiration
Capture energy throughout the process of cellular respiration
During electron transport, protons are pumped out of the mitochondrion at each of the major sites except for ______
Complex I
Complex II
Complex III
Complex IV
The ETC makes water. To make this water, where do the hydrogen atoms come from?
Glucose
Oxygen
Pyruvate
NADH and FADH2
The protein pumps in the ETC are arranged in order of ____ electronegativity
Increasing
Decreasing
Protons are pumped out of the _________ in the ETC
Matrix
Cristae
Intermembrane space
Mitochondrion
NADH dehydrogenase, the first stop in the electron transport chain, is located in which of the following areas?
Cell wall
Intermembrane space
Cytosol
Inner mitochondrial membrane
Cytochrome oxidase_________
Uses H2O as a substrate
Produces HOOH as a product
Cannot function if oxygen is absent
Accepts electrons from hydrogen ions
Name two mobile carriers that are involved in Electron Transport Chain
Ubiquinone
Plastocyanin
Plastoquinone
Cytochrome c
A drug is introduced into cells. This drug entirely stops the flow of electrons via the electron transport chain
Oligomycin
Dinitrophenol
Cyanide
Methotrexate
If a hole was created in the inner mitochondrial membrane the result would be less ATP created from ETC
True
False
