we are not "made of stardust" we just are 40% stardust(an impressive amount seeing as the stardust atom is heavier than normal atoms).
Cells with large numbers of mitochondria have a high energy demand
Answer:
Cardiac muscle tissue
Explanation:
Myocardium or heart muscle is a special type of muscle (differ than striated and smooth) and it is the main tissue of the walls of the heart.
Heart muscle consists of individual heart muscle cells (cardiomyocytes) which are joined together by intercalated discs. It also contains collagen fibres and other substances that form the extracellular matrix.
Heart muscle has a "special" mode of contraction: action potential triggers the release of calcium ions from the cell's internal store, the sarcoplasmic reticulum.
The sender is.....Nucleotides. DNA is made of chemical building blocks called nucleotides.
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