The four types of macromolecules in cells are nucleic acids, lipids, proteins, and carbohydrates.
Explanation:
possible benefits of genetic engineering include:
More nutritious food
Tastier food
Disease- and drought-resistant plants that require fewer environmental resources (such as water and fertilizer)
Less use of pesticides
Increased supply of food with reduced cost and longer shelf life
Faster growing plants and animals
Food with more desirable traits, such as potatoes that produce less of a cancer-causing substance when fried
Medicinal foods that could be used as vaccines or other medicines
Answer:
Keratin serves important structural and protective functions, particularly in the epithelium. Some keratins have also been found to regulate key cellular activities, such as cell growth and protein synthesis
