Ch.9 HW ans key - eukaryotic cells Both of them contain...

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Ch. 9 HW ans key MCQ: 1) A 2) A 3) B T/ F: 1) F 2) T 3) T SQ: 1) Mitochondrial DNA and chloroplast DNAs have many similarities with eubacterial DNA. Most of them are small, circular and lack histone proteins. Antibiotics that inhibit eubacterial translation also inhibit mitochondrial and chloroplast translation. Both of them encode for tRNAs and rRNAs. Chloroplast DNA is larger and has many non-coding regions, which is usually not present in mitochondrial DNA. 2) Endosymbiotic theory states that mitochondria and chloroplasts originated from formerly free-living bacteria that became endosymbiotic within a larger
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Unformatted text preview: eukaryotic cells. Both of them contain genomes that encode for proteins, tRNA and rRNAs. DNA size, genome structure and sequence of these two is very similar to bacterial DNA. 3) Most anticodons of the mitochondrial tRNAs can pair with more than one codon. Therefore, wobbling at the third position of the codon still allows pairing. 4) A disorder arising from mitochondrial mutation demonstrates certain characteristics; 1) exhibit a maternal pattern 2) reflects a defect in energy production 3) must be a mutation in one or more mitochondrial genes Example: MERRF and LHON...
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