Glycolysis: A Fundamental Process in Cellular Respiration

Where does glycolysis occur in prokaryotes and eukaryotes?

a) Cytoplasm; cytoplasm

b) Cytoplasm; mitochondria

c) Plasma membrane; mitochondria

d) Cytoplasm; plasma membrane

e) Plasma membrane; cytoplasm

Answer:

The correct answer is: Glycolysis occurs in the cytoplasm of both prokaryotes and eukaryotes.

In prokaryotes, such as bacteria, the entire process of glycolysis takes place in the cytoplasm. The cytoplasm is the gel-like substance that fills the cell and contains various organelles and enzymes necessary for cellular processes.

In eukaryotes, such as plants, animals, and fungi, glycolysis also occurs in the cytoplasm. The cytoplasm is where the initial steps of glycolysis occur, converting glucose into two molecules of pyruvate. These reactions do not require any specific organelles.

It is important to note that while glycolysis occurs in the cytoplasm of both prokaryotes and eukaryotes, there are subsequent steps in cellular respiration that differ between the two types of organisms. In eukaryotes, pyruvate is transported into the mitochondria for further processing, whereas in prokaryotes, the remaining steps of cellular respiration occur in the cytoplasm.

So, to summarize, glycolysis occurs in the cytoplasm of both prokaryotes and eukaryotes.