Answer:
Answer is C
Explanation:
Each cell has an identical copy of DNA with enzymes controlling the expression of specific genes leading to a variety of cells
Proteins. they are a string of amino acids
Answer:
Dissolved or gaseous substances have to pass through the cell membrane to get into or out of a cell. Diffusion occurs when particles spread. ... They move from a region where they are in high concentration to a region where they are in low concentration.
Explanation:
Mark me as brainliest and follow me
Answer:
Food is prevented from entering the trachea because C