To solve this problem, we need to analyze each statement regarding mitochondria and identify the incorrect one. Let's examine each option:$\newline \bullet$Option 1: Outer membrane is permeable to monomers of carbohydrates, fats, and proteins.$\newline$ - The outer membrane of mitochondria contains porins, which make it permeable to small molecules such as monomers of carbohydrates, fats, and proteins.$\newline$ - Therefore, this statement is correct.$\newline \bullet$Option 2: Enzymes of the electron transport chain are embedded in the outer membrane.$\newline$ - The enzymes of the electron transport chain are actually embedded in the inner mitochondrial membrane, not the outer membrane.$\newline$ - Therefore, this statement is incorrect.$\newline \bullet$Option 3: Inner membrane is convoluted with infoldings.$\newline$ - The inner membrane of mitochondria is highly convoluted, forming structures known as cristae.$\newline$ - These infoldings increase the surface area for biochemical reactions.$\newline$ - Therefore, this statement is correct.$\newline \bullet$Option 4: Mitochondrial matrix contains a single circular DNA molecule and ribosomes.$\newline$ - The mitochondrial matrix does indeed contain a single circular DNA molecule and ribosomes, allowing it to synthesize some of its own proteins.$\newline$ - Therefore, this statement is correct.$\newline$Based on the analysis, the incorrect statement is Option 2: Enzymes of the electron transport chain are embedded in the outer membrane.