Answers: 1
Biology, 22.06.2019 01:30
Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.
Answers: 1
Biology, 22.06.2019 13:10
Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.
Answers: 2
Biology, 22.06.2019 15:30
The process of replication is the same for all living things because
Answers: 1
Which of these statements best explains how oceans influence climate by storing heat?...
English, 27.03.2020 20:23
English, 27.03.2020 20:23
Mathematics, 27.03.2020 20:23
English, 27.03.2020 20:23
English, 27.03.2020 20:23
Chemistry, 27.03.2020 20:23
Mathematics, 27.03.2020 20:23
Health, 27.03.2020 20:23