In 1884, Elie Metchnikoff observed cells collected around a splinter inserted in a sea star embryo. This was the discovery of
a. blood cells.
b. sea stars.
c. phagocytosis.
d. immunity.
e. none of the above

검증된 단계별 안내

Understand the historical context: Elie Metchnikoff is known for his pioneering work in immunology, particularly related to how certain cells respond to foreign bodies.

Recall that Metchnikoff observed cells surrounding a splinter in a sea star embryo, which led to the identification of a specific cellular process.

Recognize that the process observed was the engulfing and digestion of foreign particles by cells, a fundamental immune response.

Identify the term for this process as 'phagocytosis,' which is the mechanism by which certain cells (phagocytes) ingest harmful particles, bacteria, or dead cells.

Conclude that the correct answer corresponds to the discovery of phagocytosis, which is option c.

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

Phagocytosis is the process by which certain cells, called phagocytes, engulf and digest foreign particles, bacteria, or dead cells. Elie Metchnikoff discovered this mechanism when he observed cells surrounding a splinter in a sea star embryo, highlighting a fundamental immune response.

Innate Immunity

Innate immunity is the body's first line of defense against pathogens, involving non-specific responses like phagocytosis. Metchnikoff's observation contributed to understanding how organisms naturally protect themselves without prior exposure to a pathogen.

Historical Contributions to Immunology

Elie Metchnikoff's work in 1884 was pivotal in immunology, as it identified cellular mechanisms of defense. Recognizing his discovery helps contextualize the development of modern immunology and the role of immune cells in protecting organisms.

In 1884, Elie Metchnikoff observed cells collected around a splinter inserted in a sea star embryo. This was the discovery ofa. blood cells.b. sea stars.c. phagocytosis.d. immunity.e. none of the above