问答题

What functional roles do the ECM (细胞外基质)and cell wall share in common

【参考答案】

答: 功能上的共同点有: 维持细胞的形态、保持细胞的水分、具有抗压能力。

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判断题

Atrial natriuretic peptides(心钠肽) bind to a receptor that activates a G protein,which in turn activates guanylyl cyclase(鸟苷环化酶) to produce cyclic GMP which then activates a cyclic GMP-dependent protein kinase (PKG).

判断题

It is thought that extracellular ligand binding to a receptor tyrosine kinase activates the intracellular catalytic domain by propagating a conformational change across the lipid bilayer through the single transmembrane a helix.

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