AP BIOLOGY

Detailed explanation-1: -Phagocytosis of bacteria by Macrophages. Movement of Ca2+ ions out of cardiac muscle cells. Transportation of amino acids across the intestinal lining in the human gut. Secretion of proteins like enzymes, peptide hormones, and antibodies from different cells.

Detailed explanation-2: -Endocytosis and exocytosis are the bulk transport mechanisms used in eukaryotes. As these transport processes require energy, they are known as active transport processes.

Detailed explanation-3: -The sodium-potassium pump is the most prevalent and well-known example of active transportation. On the cell membrane, a sodium-potassium pump moves 3 sodium ions outside the cell and 2 potassium ions inside the cell per ATP.

Detailed explanation-4: -Both endocytosis and exocytosis are active transport processes.

Detailed explanation-5: -And the examples of endocytosis are the leukocytes, neutrophils and monocytes which engulf the foreign particles such as bacteria, etc. And the Metabolism of Cholestrol is a best example for receptor mediated endocytosis.