Staphylococcal food poisoning is called an intoxication disorder because the bacteria produce type III secretion system toxins. This is a type of gastrointestinal illness caused by infection with the staphylococcus aureus bacterium. it is one of the most common food-borne diseases and results from the ingestion of staphylococcal enterotoxins performed in food by enterotoxigenic strains of staphylococcus aureus.
Simple....
as you've learned... cells create tissue..tissue creates organs...organs create organ systems..and organ systems create organisms. They all work together to create something...
An example:
muscle cell-->>muscle tissue-->>heart-->>circulatory system-->>the circulatory system makes up a part of the body.
Thus, your answer.
Answer: The Answers are, A: happens all the time, D: can be caused by genetic drift, and E: can be caused by natural selection.
The endomembrane system is very important for synthesizing, processing, and movement of lipids and proteins in the cell.
The smooth ER function is mainly used for lipid synthesizing and processing, while the rough ER function is for protein synthesizing
hope this helps