全是干货！IB生物重点词汇、IB生物重难知识点、IB生物答题技巧……全都在这里了！

题干：What is occuring in the cell cycle during interphase?

A.Centromeres split

B.DNA Replication

C.Nuclear membrane breaks down

D.Chiasmata form

解题技巧:看见 cell cycle 和interphase，选择关键词DNA Replication。

题干：Outline the mechanisms involved in the control of heartbeat.(3)

解题技巧:关键词为 control of heartbeat，三分所以要写三种control的点带关键词

关键词例子: SAN, brain medulla, adrenal gland

题干：Explain how nerve impulses travel along a neuron(8)

解题技巧:关键词为 nerve impulse 和 neuron，大题写步骤不用写段落，可用bullet point，八分的题至少有八个关键词。

关键词例子: action potential,threshold potential,depolarization,

repolarization,hyperpolarization,voltage-gated sodium channels,

localized currentsodium potassium pump

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