Enzymes and antibodies are examples of . proteins. phospholipids. steroids. nucleic acids

Answer;

-Proteins

Explanation;

-Proteins are the most diverse biomolecules on Earth, performing many functions required for life. Protein enzymes are biological catalysts, maintaining life by regulating where and when cellular reactions occur.

-Structural proteins provide internal and external support to protect and maintain cell shape. For example, keratins are an important class of structural proteins found in the hair, skin, nails, and feathers of animals.

-Motility proteins provide the basis for cellular and whole organism movement, including muscle motor proteins that can move entire animals.

-Antibodies are proteins that are synthesized by an animal in response to the presence of a foreign substance in our body, called an antigen. They play a great role in the immune system, and are usually found in blood and other bodily fluids.

the endomembrane system i think

the answer is d p: cell, q: organ, r: organ system, s: tissue