The universe contains:
a - few black holes
b - billions of galaxies
c - millions o...
Answers: 1
Biology, 22.06.2019 01:30, ayoismeisalex
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 18:00, rbrummitt6922
Does all the energy stored by the phytoplankton reach the top level of the pyramid
Answers: 1
Biology, 22.06.2019 22:30, jo17miapierre
The disease osteoporosis often results from insufficient intake of dietary calcium salts. of the three samples of bone you tested in exercise 7-2, which is the most similar to the bones in osteoporosis
Answers: 2
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English, 19.07.2019 07:00