NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following structures is used to propel bacteria through fluid:
A
Nucleus
B
Ribosome
C
Plasmid
D
Flagellum
Explanation: 

Detailed explanation-1: -The bacterial flagellar motor is powered by the transmembrane electrochemical gradient of ions, namely ion motive force (IMF) and rotates the flagellar filament to generate thrust to propel the cell body.

Detailed explanation-2: -Bacterial flagella propel the cell by rotating, and this rotation is regulated in response to information transmitted by chemoreceptors on the surface of the cell. Rotation is driven by a motor anchored in the cell membrane.

Detailed explanation-3: -The Basal Body It is responsible for the propelling of the filament portion of the flagellum. During flagellum assembly, flagellar proteins travel from the cytoplasm to their location. The basal body is essential for this process.

Detailed explanation-4: -The bacterial flagellum is a motile organelle composed of thousands of protein subunits. The filamentous part that extends from the cell membrane is called the axial structure and consists of three major parts, the filament, hook, and rod, and other minor components.

There is 1 question to complete.