Question

step 3 - the etc
the final step of cellular respiration is the electron transport chain (etc) and chemiosmosis. these two
processes rely on each other to convert the high - energy electrons from the previous stages into atp. the
etc is a series of proteins found in the inner membrane in the mitochondria. they accept the electrons
from the electron carriers nadh and fadh₂ and use some of the electrons energy to pump hydrogen
ions (h⁺) across the inner membrane. these h⁺ ions will be used in chemiosmosis

1. step 3 of cellular respiration includes the

and

1. the etc is powered by high - energy

dropped off by electron carriers nadh and fadh₂

1. the etc pumps

ions across the membrane.
flow of electrons

Explanation:

Question 33

From the text, Step 3 of cellular respiration (the final step) includes the electron transport chain (ETC) and chemiosmosis, as stated "the electron transport chain (ETC) and chemiosmosis".

The text says "These two processes rely on each other to convert the high - energy electrons from the previous stages into ATP" and "They accept the electrons from the electron carriers NADH and FADH₂", so the ETC is powered by high - energy electrons.

The text mentions "use some of the electrons’ energy to pump hydrogen ions (H⁺) across the inner membrane", so the ETC pumps hydrogen (H⁺) ions across the membrane.

Answer:

electron transport chain (ETC); chemiosmosis

Question 34