Answer:
Cells that need to perform high amounts of work, such as muscle cells in the heart and legs, fat cells and liver cells. Mitochondria are organelles which contain their own DNA. Animal cells generally have approximately 1,000 to 2,000 mitochondria.
Explanation:
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Answer:
A promoter refers to a DNA sequence, that is, situated upstream of a gene and signals the start of transcription.
A repressor refers to a transcription factor that prevents transcription by combining with the operator site.
An insulator refers to an element that obstructs the signals between the promoters and enhancer.
A regulatory gene refers to a gene, which monitors the expression of one or more genes by preventing or encouraging transcription.
An inducer refers to a molecule that stimulates the synthesis of mRNA by disabling the protein, which inhibits the transcription.
An operator refers to a short sequence of DNA situated close to the promoter region, and is recognized by a repressor protein.
Cellular respiration occurs in animals and plants