Communication between cells is mediated by cell signaling molecules and ( ).
A: Cell receptor
B: Antibody
C: Enzyme
D: Electric signal
A: Cell receptor
B: Antibody
C: Enzyme
D: Electric signal
举一反三
- Which of the following cell signaling molecules does the neurotransmitter belong to? ( ) A: Chemical signal B: Gas molecules C: Optical signal D: Electric signal
- In a typical communication between cells, the signaling cell produces a particular type of intracellular signal molecule that is detected by the target cell.
- 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.
- In __________________ signaling, a cell-surface-bound signal molecule binds to a receptor protein on an adjacent cell. During embryonic development, for example, such signaling method allows adjacent cells that are initially similar to become specialized to form different cell types. A: endocrine B: contact-dependent C: paracrine D: neuronal
- 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