The folds in the stomach lining are called rugae. On these rugae, you will find a thin line of mucous which helps protect the stomach lining. The innermost layer is called Simple Columnar Epithelium.
<u>Answer</u>: c. Carrying capacity is the maximum population size required for a particular species in a particular area to survive.
<u>Explanation</u>: this is an average population density level. If the population density is above this level, the number of individuals will decrease. If the population density is under this level, the number of individuals will increase until the carrying capacity is reached once more.
Bacterial flagellum is composed of protein flagellum which looks like hollow tube. It passes through protein rings (basal body rings) in the cell's membrane that act as bearings. Flagellum is long, filamentous and it rotates via motor which is located on the inner cell membrane. The motor is powered by proton motive force (flow of protons through the membrane due to a concentration gradient).
