举一反三
- A plasma cell has developed from a B cell. Compared to the cell from which it was derived, the plasma cell A: displays more pMHC Class II B: is a more efficient antigen presenting cell C: recognizes different epitopes D: releases soluble immunoglobulins E: undergoes more efficient isotype switching
- 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
- In a typical communication between cells, the signaling cell produces a particular type of intracellular signal molecule that is detected by the target 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
- Animals, _______, and some fungi consist of diverse eukaryotic cell types, all derived from a single fertilized egg cell.
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The pluripotent stem cell of the bone marrow produces all blood cells through different lineages via induction of different differentiation pathways. Which one of the following is produced from the same cell line as RBCs A: NK-cells B: B-lymphocytes C: T-lymphocytes D: Basophils E: Platelets
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Which of the followings is Ser/Thr kinase? A: Protein kinase A B: MAPK C: Protein kinase C D: Protein kinase G E: MEK
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Which is one of the different types of the booth?
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Cell organelles are located within the ____ of the cell. A: nucleus B: cytoplasm C: Cell membrane D: lysosomes
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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.