Which statement about memory cells is true?

Question

Quizplus · Accepted Answer

Memory cells are responsible for the rapidity and efficiency of secondary immune responses. This is because memory cells are able to quickly differentiate into effector cells upon encountering the same antigen again, leading to a faster and more effective response.

Answer: A
 Division produces memory cells but not effector cells. During clonal expansion, B and T cells divide to produce both effector and memory cells. However, not all of the daughter cells produced during this process differentiate into effector cells. Instead, some differentiate into long-lived memory cells that can provide long-term protection against future infections.

Answer: E
 Memory cells do not divide at a rapid rate when not responding to an immunological challenge. While they may survive for many years, memory cells are largely quiescent and do not actively divide or proliferate unless they encounter their specific antigen. This helps to ensure that the immune system is not constantly generating unnecessary immune responses.

Which Statement About Memory Cells Is True