核心酶（core enzyme)

RNA聚合酶核心酶(RNA polymerase core enzyme)

解释下列名词：RNA聚合酶的核心酶(RNA polymerase core enzyme)；δ因子(δfactor)；RNA聚合酶全酶(RNA polymerase noloenzyme)；启动子(promoter)；操纵子(operator)。

放线菌素D(actinomycin D)抑制的转录酶是

A．细菌的全酶(holoenzyme)；

B．细菌的中心酶(core enzyme)；

C．真核细胞的pol Ⅱ；

D．真核细胞的pol Ⅰ。

A、Chylomicrons are made inside intestinal cells and secreted into lymph, where they acquire apolipoproteins B and C.

B、The core of chylomicrons contains triacylglycerol and phospholipids.

C、The enzyme hormone sensitive lipase acts on chylomicrons to release fatty acids from triacylglycerol when they are bound to the surface of endothelial cells in blood capillaries.

D、Chylomicron remnants differ from chylomicrons in that they are smaller and contain a lower proportion of triacylglycerol.

E、Chylomicrons are taken up by the liver.

单体酶(monomeric enzyme)