Answer:
The answer is D a retrovirus inserts DNA into the host cells genes
<span>A messenger is required to translate the coding into actual physical proteins. You can't have proteins be directly built from DNA because it is fragile and meant as storage, not manufacturing, for a cell. RNA and tRNA are used to transfer the instructions from DNA to organelles designed for manufacturing.</span>
Cell, organism, heart, skeletal muscle, digestive system.
Fats <span>are the most highly concentrated source of energy in the body. It is broken down in cellular respiration.
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Answer:
there are more electrons than protons
Explanation: