Biology, 06.01.2021 05:50 zovav1oszg9z
The phospholipids of plasma membranes are amphipathic: they have both hydrophilic and hydrophobic regions. The hydrophobic
core of the plasma membrane helps some materials move through the membrane, while it blocks the movement of others. How
does the structure of the cell membrane help to enable its function?
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 01:30
Select three sports that require participants to be highly fit before the beginning a: snowboarding b: skydiving c: rock climbing d: bungee jumping e: free diving f: hiking
Answers: 1
Biology, 22.06.2019 02:00
Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat
Answers: 2
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