<h2>
Answer:</h2>
<u>reactants, </u> <u>products</u>
<u>catalyst</u>
<u>activation energy</u>
<u>enzymes</u>
<h2>
Explanation:</h2>
Chemical reactions convert <u>reactants</u> to <u>products</u>. In nonliving systems, the presence of a(n) <u>catalyst </u>allows the reaction to proceed very quickly and have a lower <u>activation energy</u>. In living systems, this function is carried out by proteins called <u>enzymes</u>.
Yea you are right. Animal cells do not have cell walls though plant cells do have cell walls
To increase the absorption of nonheme iron in beans, you can eat a portion of food with vitamin C alongside the beans.
<h3>What are vitamins?</h3>
Vitamins are certain micronutrients that may help to absorb other nutrients (e.g., minerals) in the body.
Vitamins are micronutrients that can be classified as fat-soluble vitamins and water (hydrophilic) soluble vitamins.
Vitamin C is required for the formation of blood vessels, muscle and cartilages in the body.
Learn more about vitamins here:
brainly.com/question/9348916
Plants use Photosynthesis for food and nutrients and produce oxygen in the progress