Anwser
<span>Enzymes act as catalysts that remain unmodified as they increase the rate of a chemical reaction</span>
Answer:chemical reaction
Explanation:Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. They are vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism.
<span>What is the difference between a cell wall and a cell membrane
</span>
<span>D. The cell walls has a rigid structure. The cell membrane is flexible.
</span>
Answer: C. DNA or (Deoxyribonucleic acid )
Explanation: Deoxyribonucleic acid (DNA) has a unique role as the genetic material, which in eukaryotic cells is located in the nucleus.