CELL RESPIRATION
STRUCTURE OF THE MITOCHONDRION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A smooth outer membrane and highly permeable inner membrane.
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A relatively permeable smooth outer membrane only.
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A roughly folded outer membrane with high permeability to small molecules and smooth inner membrane.
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A smooth outer membrane and folded inner membrane.
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Detailed explanation-1: -Mitochondrion possesses double membrane as its covering. The outer smooth surface and the inner membrane forms infoldings called as cristae, which increases surface area for more formation of energy in the form of ATP.
Detailed explanation-2: -The inner membrane of the mitochondrion folds inwards, forming the cristae. This folding allows a greater amount of membrane to be packed into the mitochondrion.
Detailed explanation-3: -The outer mitochondrial membrane fully surrounds the inner membrane, with a small intermembrane space in between. The outer membrane has many protein-based pores that are big enough to allow the passage of ions and molecules as large as a small protein.
Detailed explanation-4: -The membrane’s outside is largely smooth. Cristae, or extremely convoluted folds, are formed in the inner membrane. The surface area of the inner membrane is considerably increased by the cristae.
Detailed explanation-5: -The smooth outer membrane holds numerous transport proteins, which shuttle materials in and out of the mitochondrion The outer membrane is 60–70 Å thick and permeable to small molecules including salts, adenine and nicotinamide nucleotides, sugars and coenzyme.