Question

What is produced from the third stage of cellular respiration, the electron transport chain? A. NADH and water B. Water and ATP C. Pyruvate and ATP D. Carbon dioxide and NADH

Answer 1

Answer;

-ATP

Explanation;

Cellular respiration is the process by which plants and animals break down organic molecules such as glucose to obtain energy in the form of ATP, that is used to drive cellular activities such as transport and reproduction.

-The process takes place in three phases; glycolysis, kreb's cycle and the electron transport chain.

-Electron transport chain is the last stage of cellular respiration which builds up a surplus of hydrogen ions (protons) in the intermembrane space so that there will be a concentration gradient compared to the matrix of the mitochondria.  The concentration gradient is used to generate ATP (usable energy by the cell) through transfer of electrons.

Answer 2

The answer is B. Water and ATP.

The main function of electron transport chain (ETC) is a production of ATP. It takes electrons freed in the previous stages of cellular respiration. It is actually a series of oxidation-reduction reactions in which the oxygen is the final acceptor of electrons. As the result, water and ATP are produced.