If the following are placed in the order of occurrence, which would be the third step?
a. Diapedesis
b. Digestion
c. Formation of a phagosome
d. Formation of a phagolysosome
e. Margination

검증된 단계별 안내

First, understand the sequence of events in the process of phagocytosis, which is how immune cells like neutrophils or macrophages engulf and destroy pathogens.

Identify the initial steps where immune cells move toward the site of infection: margination (e) is when leukocytes move to the blood vessel walls, followed by diapedesis (a), where they squeeze through the vessel walls into the tissue.

Next, the immune cells encounter the pathogen and engulf it, leading to the formation of a phagosome (c), which is a vesicle containing the ingested particle.

After the phagosome forms, it fuses with a lysosome to create a phagolysosome (d), where digestive enzymes break down the pathogen.

Finally, digestion (b) occurs inside the phagolysosome, where the pathogen is degraded by enzymes.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Phagocytosis Process

Phagocytosis is a cellular mechanism where immune cells engulf and destroy pathogens. It involves sequential steps including recognition, attachment, ingestion, and digestion of microbes, essential for innate immunity.

Diapedesis and Margination

Margination is the process where white blood cells move toward the blood vessel walls, followed by diapedesis, where they squeeze through the vessel walls to reach infection sites. These steps precede phagocytosis.

Phagosome and Phagolysosome Formation

After engulfing a pathogen, the immune cell forms a phagosome, a vesicle containing the microbe. This then fuses with a lysosome to form a phagolysosome, where digestive enzymes break down the pathogen.

If the following are placed in the order of occurrence, which would be the third step?a. Diapedesisb. Digestionc. Formation of a phagosomed. Formation of a phagolysosomee. Margination