80.表皮生長因子受體（epidermal growth factor receptor, EGFR）基因突變是肺癌常見的突變之一，該基因的突變最常發生在下列那個區域？ (A)酪胺酸激酶區域（tyrosine kinase domain） (B)穿膜區域（transmembrane domain） (C)膜外區域（extracellular domain） (D)表皮生長因子結合區域（EGF binding domain）

80.表皮生長因子受體（epidermal growth factor receptor, EGFR）基因突變是肺癌常見的突變之一，該基因的突變最常發生在下列那個區域？
(A)酪胺酸激酶區域（tyrosine kinase domain）
(B)穿膜區域（transmembrane domain）
(C)膜外區域（extracellular domain）
(D)表皮生長因子結合區域（EGF binding domain）

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統計： A(1053), B(80), C(43), D(541), E(0) #2973554

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B1 · 2022/07/28

#5573999

想一下誰是EGFR的活化部位tyros...

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4. A mass spectrometer works by ionizing atoms or molecules, and then accelerating them through oppositely charged plates. The mass is obtained by (A) measuring the force of impact on a detecting screen, and then calculating the mass using force = mass × acceleration. (B) suspending the ions in an applied electric field, and then calculating mass by the setting the downward gravitational force equal to the upward electrostatic force. (C)measuring the magnitude of deflection as the ions pass through a magnetic field to obtain the charge-to-volume ratio, and then calculating the mass from that ratio. (D) measuring the time it takes for the ions to hit the detector at a known distance to calculate the acceleration, and then calculating mass from force = mass × acceleration. (E) all are not correct.

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