the functions of the extracellular matrix include a. supporting differentiation. b. inducing morphogenesis. c. binding growth hormones. d. all of the above
protein levels of cdk catalytic subunits fluctuate during cell cycle.
潘光旦早年参加的“大江会”基本主张是（ ）。
a lipid bilayer is the fundamental structural component of all cell membranes
growing microtubule ends are normally stabilized by
which of the following proteins is involved in formation of actin bundles in microvilli by providing crosslinks between actin filaments
in the epithelial cells of the gut na -linked symporters in the apical (absorptive) domain of the plaa membrane and na -independent transport proteins in the basolateral domain bring about the ___________________ of absorbed solutes.
制作1个二十面体花球，发挥创意将其装饰美观
which of the following is not the morphological characteristics of senescent cells?
which of the following is not one of the main components of the cell theory?
in regarding to the three basic complex that establishing the apical basal polarity of epithelial cells, which of the following statements is correct?
按多缸发动机各缸作功间隔应相等的原则，四缸四冲程发动机其作功间隔角为（）。
proteoglycans are a. located exclusively at the cell surface. b. glycoproteins that contain glycosaminoglycans. c. highly positively charged. d. located exclusively in the extracellular matri
the major families of cell surface adhesion molecules include a. cadherins and selectins. b. integrins. c. the ig-superfamily. d. all of the above