When B cells are activated by T-helper cells, they clone themselves and begin to secrete antibodies. Antibodies are large, Y-
shaped proteins that recognize specific antigens that may be associated with pathogenic bacteria or other cell types. Based on the
size and structure of antibodies, what best explains their export from activated B cells?
A)
via exocytosis
B)via active transport
C)via simple diffusion
D)
via facilitated diffusion

In exocytosis, large particles (proteins, neurotransmitters, waste material etc.) are surrounded by a phospholipid membrane in a vesicle; this attaches to the plasma membrae and is released into the extracellular space.

Further Explanation:

While cells facilitate the transport of molecules via movement across the cell membrane, there many different mechanisms. These include passive diffusion, facilitated diffusion, active and passive transport. However some very large molecules require specialized type of active transport in order to move across the membrane this includes endocytosis and exocytosis.

During endocytosis large molecules cells and cell fragments moved across the plasma membrane through a process of invagination; piece of the external cell membrane falls into itself and forms a small pocket that surrounds the target molecule, this breaks off from the membrane to form an intracellular vesicle. Different methods of endocytosis such as Phagocytosis, Pinocytosis and receptor-mediated endocytosis, take in cells, water and targeted substances respectively.

In exocytosis, large particles (proteins, neurotransmitters, waste material etc.) are surrounded by a phospholipid membrane in a vesicle. However, this membrane is formed in the cytoplasm, and attaches to the plasma membrane’s interior in a process opposite to endocytosis; material is removed from the cell and exported into the cell’s exterior called the extracellular space.

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

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