INTRODUCTION TO MICROSCOPY CELL BIOLOGY
MITOCHONDRIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Enzymes necessary for Krebs and link reactions, High H+ ion concentration and 70S ribosomes.
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Enzymes necessary for Krebs and link reactions, High H+ ion concentration and mitochondrial DNA.
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small 70S ribosomes, copies of looped mitochondrial DNA and enzymes necessary for Krebs and link reactions.
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small 70S ribosomes, copies of mitochondrial DNA in chromosomes and enzymes necessary for glycolysis.
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Detailed explanation-1: -Mitochondrial matrix possesses its own ribosomes (70S in nature). It synthesises some of its own structural proteins. New mitochondria, develop by division of pre-existing mitochondria.
Detailed explanation-2: -The matrix contains the deoxyribonucleic acid (DNA) of the mitochondrial genome and the enzymes of the tricarboxylic acid (TCA) cycle (also known as the citric acid cycle, or Krebs cycle), which metabolizes nutrients into by-products the mitochondrion can use for energy production.
Detailed explanation-3: -In eukaryotes, the Krebs cycle reactions take place in the mitochondrial matrix, a dense solution that surrounds the mitochondria crests: in addition to water, the matrix contains all the enzymes necessary for the biochemical reactions of the cycle, coenzymes, and phosphates.