13. what is flagella?
14. what is cilia?
15. what is a local infection?
16. what is a systemic infection?
17. what is binary fission?
18. which virus is most commonly spread in the salon through nippers or razors?
19. what does hiv stand for?

Question

Accepted Answer

### Question 12: What is flagella?
# Brief Explanations:
Flagella are long, whip - like appendages found on some cells (e.g., bacteria, sperm cells). They are used for locomotion, helping the cell move through its environment. In prokaryotes, bacterial flagella are made of flagellin and rotate like a propeller, while in eukaryotes, they have a more complex microtubule - based structure and move in a wave - like motion.
# Answer:
Flagella are long, whip - like cellular appendages that enable cell movement (e.g., in bacteria, sperm) through rotation (prokaryotes) or wave - like motion (eukaryotes).

### Question 14: What is cilia?
# Brief Explanations:
Cilia are short, hair - like structures that extend from the surface of many eukaryotic cells. They can be motile or non - motile. Motile cilia (e.g., in the respiratory tract) beat in a coordinated manner to move substances like mucus or to propel the cell. Non - motile cilia (primary cilia) act as sensory organelles, detecting signals from the cell's environment.
# Answer:
Cilia are short, hair - like cellular structures; motile cilia move substances/cells, non - motile (primary) cilia sense the environment.

### Question 15: What is a local infection?
# Brief Explanations:
A local infection is an infection that is confined to a specific, limited area of the body. For example, a boil on the skin is a local infection. The pathogenic microorganisms and the associated inflammatory response are restricted to that particular region, and do not spread widely throughout the body.
# Answer:
A local infection is an infection confined to a specific, limited area of the body (e.g., a boil on the skin).

### Question 16: What is a systemic infection?
# Brief Explanations:
A systemic infection is an infection that spreads throughout the body via the bloodstream or lymphatic system. Pathogenic microorganisms and the associated immune response affect multiple organs or systems. For example, sepsis is a severe systemic infection where the infection spreads throughout the body, causing a systemic inflammatory response.
# Answer:
A systemic infection is an infection that spreads throughout the body (via blood/lymph) affecting multiple organs/systems (e.g., sepsis).

### Question 17: What is binary fission?
# Brief Explanations:
Binary fission is a form of asexual reproduction in prokaryotes (e.g., bacteria) and some single - celled eukaryotes (e.g., amoeba). The cell duplicates its genetic material and then divides into two approximately equal - sized daughter cells. In bacteria, the circular chromosome replicates, and the cell membrane and cell wall grow inward to separate the two new cells.
# Answer:
Binary fission is an asexual reproduction process (in prokaryotes/eukaryotic microbes) where a cell divides into two equal daughter cells after replicating its genetic material.

### Question 18: Which virus is most commonly spread in the salon through nippers or razors?
# Brief Explanations:
Hepatitis B virus (HBV) is commonly spread in salons through contaminated nippers or razors. HBV is a blood - borne virus, and if these tools are not properly sterilized and come into contact with infected blood (e.g., from a client's cut) and then used on another client, it can transmit the virus. Other blood - borne viruses like Hepatitis C can also be spread, but HBV is more common in such settings due to its stability outside the body.
# Answer:
Hepatitis B virus (HBV) is most commonly spread in salons via contaminated nippers/razors.

### Question 19: What does HIV stand for?
# Brief Explanations:
HIV stands for Human Immunodeficiency Virus. This virus attacks the immune system, specifically the CD4 + T cells, and can lead to acquired immunodeficiency syndrome (AIDS) if left untreated.
# Answer:
HIV stands for Human Immunodeficiency Virus.

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Question 12: What is flagella?

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Question 14: What is cilia?