The human mitochondrial genome encodes only 22 tRNAs, but at least 32 tRNAs are

Question

The human mitochondrial genome encodes only 22 tRNAs, but at least 32 tRNAs are needed for cytoplasmic translation. How are all codons in mitochondrial transcripts accommodated by only 22 tRNAs? The Plasmodium mitochondrial genome does not encode any tRNAs; how are genes of the Plasmodium mitochondrial genome translated? Which of the following characteristics of organelles (the mitochondria and chloroplasts) are explained by their origin as ancient bacterial endosymbionts? Select the two correct answers.

Explanation / Answer

1. By allowing the more flexible for basepairing inthe third positionof the codons .

2. By using the nuclear encoded t RNAs ,which are imported from the cytosol .

3. The possibility of the organelles to exist outside of the cell , The transcriptional and translational machinery .

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