Humber Admissions Practice Test

What is phagocytosis commonly referred to as?

1. Cell drinking

2. Cell eating

3. Cell division

4. Cell signaling

The correct answer is: Cell eating

Phagocytosis is commonly referred to as "cell eating" because it describes the process by which certain cells, often immune cells, engulf and digest large particles, such as pathogens or dead cells. This process is crucial for maintaining health and defending the body against infections. During phagocytosis, a cell extends its membrane around the target particle, ultimately enclosing it in a vesicle, which then fuses with lysosomes to break down the material inside. In contrast, phrases like "cell drinking" refer to a different process known as pinocytosis, where cells take in small amounts of liquid and dissolved substances. "Cell division" pertains to the process of cell replication, while "cell signaling" involves the communication between cells through chemical messengers. Each of these terms represents distinct biological processes separate from the fundamental concept of phagocytosis.