Multiple Choice
Which of the following is a sign of severe hypothermia?
23
views
41. Immune System
Immune System
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How does phagocytosis performed by immune cells differ from phagocytosis in protozoa?
A
Both immune cells and protozoa use phagocytosis exclusively for reproduction.
B
Protozoan phagocytosis involves the destruction of pathogens, whereas immune cell phagocytosis is for nutrient uptake.
C
Immune cells use phagocytosis only in the absence of pathogens, while protozoa use it only in the presence of pathogens.
D
Immune cell phagocytosis is primarily for defense against pathogens, while protozoan phagocytosis is mainly for nutrient acquisition.
Verified step by step guidance1
Understand the concept of phagocytosis: Phagocytosis is a process where cells engulf particles, such as pathogens or food, into a vesicle called a phagosome. This process is used by both immune cells and protozoa, but for different purposes.
Clarify the role of immune cells: In the immune system, phagocytosis is primarily performed by specialized cells like macrophages and neutrophils. These cells use phagocytosis to engulf and destroy pathogens, contributing to the body's defense mechanism.
Clarify the role of protozoa: Protozoa, which are single-celled organisms, use phagocytosis primarily for nutrient acquisition. They engulf food particles or other organic matter to sustain their survival and growth.
Compare the purposes: The key difference lies in the purpose of phagocytosis. Immune cells use it as a defense mechanism against pathogens, while protozoa use it as a method to obtain nutrients.
Conclude the distinction: Summarize that immune cell phagocytosis is primarily for defense against pathogens, whereas protozoan phagocytosis is mainly for nutrient acquisition, highlighting the functional differences between these two types of cells.
Related Videos
Related Practice
