Biology, 06.05.2020 22:59 destinyhammons12345
What affect do PCB’s have on Tomcod embryos?
a) PCB’s cause the pancreas to become toxic
b) PCB’s cause the heart to be smaller and not beat properly
c) PCB’s cause the liver to break down leading to death
d) PCB’s cause brain to swell
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 11:30, kmchippps
According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes
Answers: 3
What affect do PCB’s have on Tomcod embryos?
a) PCB’s cause the pancreas to become toxic
...
a) PCB’s cause the pancreas to become toxic
...
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