within the trachea, the __ contains mucous glands that secrete mucus onto the epithelial surface through secretory ducts

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

Eutrophication caused by human nutrient pollution.

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? a) catalysis b) metabolism c) anabolism d) dehydration e) catabolism