A scientist was studying the production of a protein that was released by an animal cell into a culture medium, she found that the protein only appeared in the culture medium after the added a few drops of a hormone to the cell. Before adding the hormone, she labelled the protein inside the cell with a fluorescent dye and looked at the cell under the lgiht microscope. The dye was seen in flattened sheets and tube. like structures throughout the cell, and in stacks of flattened sac-like structures. after adding the hormone, the dye was aslo seen as small dots clustered against the cell membrane, Which statement most likely explains these observations?

Options

A. The hormone stimulates protein synthesis in the cell vacuole, the protein is then passed to the Golgi apparatus, and eventually passess through the cell membrane by passive diffusion.
B. The hormone triggers the synthesis of the protein in the endoplasmic reticulum and it is then secreted outside of the cell via channel proteins in the cell membrane
C. The protein is made in the endoplasmic reticulum, is passed to the Golgi appartus and is secreted through hormone-stimulated exocytosis.
D. The protein is made in the Golgi apparatus, is passed to the endoplasmic recticulum and is secreted through hormone-stimulated pinocytosis.

Answer

C

Explanation

Hormones bring about their characteristic effects on target cellls by modigying cellular activity. The given expertiment shows that the hormone is a releasing hormone which has increased the secretion of protein product in the target cell.