Which of the following statements is TRUE?
A) In aerobic respiration, ATP is released in the very first reaction.
B) The process of glycolysis is restricted to anaerobic organisms.
C) Ribose is a substitute for glucose in some pathways.
D) Glycolysis occurs free in the mitochondria.
E) Enzymes lower the activation energy for each step in the chemical reactions in respiration.

Question

Quizplus · Accepted Answer

Enzymes are biological catalysts that lower the activation energy required for reactions to occur. This is true for all steps in the chemical reactions involved in respiration, whether it be aerobic or anaerobic. Option A is not true as ATP is not released in the very first reaction but towards the end of the entire process of respiration. Option B is not true as glycolysis is a universal process and occurs in both aerobic and anaerobic organisms. Option C is not true as ribose is a sugar molecule found in nucleotides, not a substitute for glucose in pathways. Option D is not true as glycolysis occurs outside the mitochondria in the cytoplasm of the cell.

Which of the Following Statements Is TRUE