Methotrexate kills some types of cancer cells by inhibiting _____________________, an enzyme that produces a compound required for DNA synthesis during cell division.
举一反三
- Which of the following about cell cycle is NOT true？（ ） A: We can get the synchronization of the cells by blocking DNA synthesis by TdR. B: Cytokinesis of animal cells is mediated by a contractile ring of actin and myosin II filaments. C: Meiosis II is similar to meiosis I. D: According to the characteristics of cell division, cell groups can be divided into three types, such as Cycling cells, Terminally Differentiated cells and Quiescent cell.
- EGCG can inhibit the growth of cancer cells or induce apoptosis of cancer cells through multiple pathways, among which the key mechanism is achieved mainly through ( ). A: anti-angiogenesis B: blocking the growth cycle of cancer cells C: inhibiting the expression of some transcription factors D: regulating cell-related signal transduction mechanism
- Communication between cells is mediated by cell signaling molecules and ( ). A: Cell receptor B: Antibody C: Enzyme 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.
- The enzyme closely related to the synthesis of RNA primer is: A: DNA pol α B: DNA pol γ C: DNA pol I D: DNA pol III