EVERYDAY SCIENCE

SCIENCE

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which are the two parts of the mitochondria?
A
Cytoplasm and thylakoid
B
Mitochondrial matrix and cristae.
C
Cristae and cytoplasm
D
Matrix and thylakoid
Explanation: 

Detailed explanation-1: -Mitochondria are surrounded by a double-membrane system, consisting of inner and outer mitochondrial membranes separated by an intermembrane space (Figure 10.1). The inner membrane forms numerous folds (cristae), which extend into the interior (or matrix) of the organelle.

Detailed explanation-2: -Cristae increase the surface area and have a variety of enzymes. Matrix – it is the space between the cristae. It is filled with a mitochondrial matrix. Matrix contains proteins, lipids, some ribosomes, RNA, DNA, ions etc.

Detailed explanation-3: -The matrix of a mitochondrion is the mitochondrion internal spaces enclosed by the inner membrane. Several of the steps in cellular respiration occur in the matrix due to its high concentration of enzymes.

Detailed explanation-4: -Structure of Mitochondria The structure comprises an outer membrane, an inner membrane, and a gel-like material called the matrix. The outer membrane and the inner membrane are made of proteins and phospholipid layers separated by the intermembrane space.

Detailed explanation-5: -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. The data in this study demonstrate that subunits e and g of the mitochondrial ATP synthase are involved in generating mitochondrial cristae morphology.

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