A tea bag can model a cell. The fabric of the bag represents the cell membrane.
In part of the model, materials move out of the bag and into the water. Which
of the following cell processes does this best model?
O A. A vacuole opens to release substances into the area outside the
cell
O B. Small molecules easily pass between the phospholipids in the cell
membrane.
O C. Substances move from an
high concentration
of low concentration to an area of
O D. Transport proteins use energy to push large molecules across the
cell membrane

In the human body fibrinogen is necessary for sealing cuts and stopping the loss of blood. since fibrinogen is made of chains of amino acids it is an example of which type of organic molecule

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.

{answer found. it's (3 ) }which statement describes the cell cycle? (1)the cell cycle is a process in which one cell divides into four genetically different cells. (2)the cell cycle is a process in which one cell divides into two genetically different cells. (3)the cell cycle is a process in which one cell divides into two genetically identical cells. (4)the cell cycle is a process in which one cell divides into four genetically identical cells.