Analyse the statements and pick up the right one regarding mitochondri...
Explanation:
The correct answer is option 'A': The outer membrane is porous while the inner membrane is deeply folded.
Overview of Mitochondria:
Mitochondria are double-membraned organelles found in most eukaryotic cells. They are often referred to as the "powerhouses" of the cell because they are responsible for generating most of the cell's energy in the form of ATP (adenosine triphosphate) through cellular respiration.
Mitochondrial Membranes:
Mitochondria have two membranes: an outer membrane and an inner membrane. These membranes play different roles in the functioning of mitochondria.
1. Outer Membrane:
- The outer membrane of mitochondria is relatively smooth and porous.
- It contains large channels called porins that allow the passage of small molecules and ions.
- These porins facilitate the exchange of metabolites between the cytoplasm and the mitochondrial intermembrane space.
- The outer membrane acts as a barrier between the cytoplasm and the inner components of the mitochondria.
2. Inner Membrane:
- The inner membrane of mitochondria is highly folded, forming structures called cristae.
- These folds increase the surface area of the inner membrane, providing more space for enzymes and proteins involved in ATP production.
- The inner membrane is impermeable to most ions and polar molecules, creating a concentration gradient that drives ATP synthesis.
- It contains proteins that are essential for the electron transport chain and ATP synthesis.
Comparison of Outer and Inner Membranes:
- The outer membrane is porous, allowing the passage of small molecules and ions.
- The inner membrane is deeply folded, increasing its surface area for ATP production.
- The length of the outer membrane is not directly related to the length of the inner membrane.
- Both membranes serve different functions and are not equal in length.
Conclusion:
In conclusion, the correct statement regarding mitochondrial membranes is that the outer membrane is porous while the inner membrane is deeply folded. This distinction in structure allows mitochondria to efficiently carry out their role in energy production within the cell.
Analyse the statements and pick up the right one regarding mitochondri...
Analysis of Mitochondrial Membranes
- Outer Mitochondrial Membrane: The outer mitochondrial membrane is quite porous because of the presence of many integral proteins known as porins. These proteins form channels that allow the free diffusion of molecules and ions up to a certain size, including small proteins.
- Inner Mitochondrial Membrane: The inner mitochondrial membrane is deeply folded, forming structures known as cristae. These folds increase the surface area of the membrane, thereby enhancing the ability of the mitochondria to produce ATP (adenosine triphosphate), which is the energy currency of the cell.
- Length of Membranes: The statement that the outer membrane is longer than the inner membrane is not correct. The length of the membranes is not a distinct feature of mitochondria. Instead, the inner membrane has more surface area due to its folds or cristae.
- Number of Membranes: Mitochondria are double-membraned organelles. They have an outer membrane and an inner membrane, separated by an intermembrane space. The statement that mitochondria mostly have a single membrane is incorrect.
So, based on the analysis, the correct statement regarding mitochondrial membranes is "The outer membrane is porous while the inner membrane is deeply folded".the inner membrane has more curls and turns compared to outer membrane , you can also take reference of brain(it has many curls and turns(neurons) and many experts say that our brains' neurons are much longer in length of our inner intestine(inner intestine measures 7 meters)).
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