Which statement best explains how the number of mitochondria in a cell relates to the specialization of a cell? A. Muscle cells
are easily destroyed. Since mitochondria are protein factories, they aid in the rebuilding of muscle cells. B. Muscle cells function in movement. Since cellular respiration releasing ATP occurs in the mitochondria, the muscle cells have a steady supply of energy. C. Muscle cells must function as a unit. Mitochondria serve as the link between muscle cells, which enable them to carry out the function of moving the skeleton. D. Mitochondria aid in the transport of nutrients through the cell. Since muscle cells require a steady supply of energy, many mitochondria are needed for this job.
B is the correct option because, in a cell, <u>only mitochondria</u> generate and provide <u>energy</u> for muscle movement.
Explanation:
Mitochondria are known as a powerhouse of the cell because they perform <u>cellular respiration</u> and <u>generate energy as an ATP</u> (Adenosine Triphosphate) molecule. <u>Muscle cells function in movement and burn more energy that's why they have many mitochondria to fulfill energy demands.</u>
On the other hand, options <u>A, C, and D are not correct options </u>because mitochondria do not perform other services such as acting as protein factories, linker cells, nutrients transportation. The activities are performed by other organelles.
This type of molecule is the MOST common energy source for all cells and enters the cell by facilitated diffusion. The molecule is the molecule ATP or the Adenosine Triposphate which is made in the mitochondria of cells.
<span>RNA polymerase starts the transcription of a gene into mRNA by binding to a specific DNA sequence region called a promoter. RNA polymerase moves past the promoter until it reaches the start sequence of the gene to be transcribed in a 5 to 3 direction.</span>
