How a cell reacts to a signal depends on the set of intracellular signaling molecules each cell-surface receptor produces and how these molecules alter the activity of effector proteins, which have a direct effect on the behavior of the target cell.
举一反三
- In a typical communication between cells, the signaling cell produces a particular type of intracellular signal molecule that is detected by the target cell.
- Communication between cells is mediated by cell signaling molecules and ( ). A: Cell receptor B: Antibody C: Enzyme D: Electric signal
- Which of the following cell signaling molecules does the neurotransmitter belong to? ( ) A: Chemical signal B: Gas molecules C: Optical signal D: Electric signal
- Which of the following cells constitutively express MHC class II molecules? ( ) A: macrophage B: dendritic cell C: Langerhans cell D: B cell E: thymic epithelial cell
- Mitosis is the normal process (by which) a cell divides, (each) new cell (ending) up with (a) same number of chromosomes as the parent cell.（） A: by which B: each C: ending D: a