Read the given statements and select the correct option....

Read the given statements and select the correct option. Statement $1:$ In prokaryotes mitochondria are absent. statement $2:$ In prokaryotes mesosomes are present which help in respiration. (a) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1 . (b) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1 . (c) Statement 1 is correct and statement 2 is incorrect. (d) Both statements 1 and 2 are incorrect.

Read the given statements and select the correct option. Statement $1:$ In prokaryotes mitochondria are absent. statement $2:$ In prokaryotes mesosomes are present which help in respiration.
(a) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1 .
(b) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1 .
(c) Statement 1 is correct and statement 2 is incorrect.
(d) Both statements 1 and 2 are incorrect.

Key Concepts

Prokaryotic Cell Structure

Prokaryotic cells are simpler in organization compared to eukaryotic cells, lacking many of the membrane-bound organelles that characterize eukaryotes. This includes the absence of organelles like mitochondria and a defined nucleus, resulting in a more rudimentary compartmentalization for cellular processes.

Membrane-bound Organelles

Membrane-bound organelles are specialized subunits within eukaryotic cells, enclosed by lipid membranes, that perform dedicated functions such as energy production, protein synthesis, and metabolism. Their absence in prokaryotes necessitates that essential functions, like cellular respiration, occur at the cell membrane or within the cytoplasm.

Mesosomes

Mesosomes are infoldings or invaginations of the prokaryotic plasma membrane that were once thought to be involved in processes such as respiration or cell division. However, their existence and functional role have been subjects of debate, with many researchers now considering them as artifacts produced during the chemical fixation process in electron microscopy.

Cellular Respiration in Prokaryotes

In prokaryotes, cellular respiration takes place at the cell membrane rather than within mitochondria, as prokaryotes lack these organelles. This adaptation shows how prokaryotic cells modify existing structures to facilitate essential metabolic processes like energy production.

Transcript

Please give Ace some feedback