2. 試述胡瓜嵌紋病毒(Cucumber mosaic virus)之病毒顆粒形態、核酸特性、傳播方式與防治策略。(7 分)

3. 若有感染病毒的珍貴植株，請說明如何將其病毒去除，然後保存所獲得之無病毒材料？(5 分)

4. 何謂 viral silencing suppressor？在植物病毒感染過程中有何重要性？(6 分)

四、線蟲學 (共 25 分)：1. 少數植物抗病基因已知能抵抗植物寄生性線蟲，對於世界上三大重要病原 Heterodera sp., Globodera sp., Meloidogyne sp., 請各舉一抗病基因，並說明其相關作用機制。(15 分)。

2. 植物寄生性線蟲時常與其他微生物共同影響植物的生長。若欲探討線蟲、細菌、作物三者間的交互作用，試設計一個實驗，並說明該實驗如何能驗證你的假說。(10 分)。

一、The figure below shows a block with mass m = 0.400 kg sits on a frictionless air track, connected to a spring with force constant k = 10.00 N/m (equilibrium position, x = 0). You pull on the block, stretching the spring 0.100 m} (x = 0.100), and release it from rest. The block moves back toward its equilibrium position. What is its x-velocity when x = 0.080 m? 【Hint】: 1. Hooke's law: $F_{x} = -kx$ . 2. Work by a spring force: $W_{s} = \frac{1}{2} kx_{i}^{2} - \frac{1}{2} kx_{f}^{2}$ .

二、The figure below shows an accident. Car A slid into the rear of car B,which was stopped at a red light along a road headed down a hill. Theslope of the hill is . The cars were separated by distancem when the driver of car A put the car into a slide (it lackedany automatic anti-brake-lock system), and that the speed of car A at theonset of braking was m/s. With what speed did car A hit carB if the coefficient of kinetic friction was 0.60? 【Hint】: 1. the magnitude of the free-fall acceleration $g = 9.8 \, \mathrm{m/s}^2$ . 2. $\sin 12^{\circ} \approx 0.20$ ; $\cos 12^{\circ} \approx 0.98$ . 3. $v = v_{0} + at$ . 4. $S = v_{0}t + \frac{1}{2} at^{2}$ . 5. v2= v02 + 2aS .

(a) Before collision

(b) After collision

四、Use a Punnett square to predict the offspring in a cross between (a) adwarf pea plant (homozygous recessive) and a tall pea plant(heterozygous). What is the phenotypic ratio of the offspring? (b) a tallpea plant (heterozygous) and a tall pea plant (heterozygous). What is thegenotypic ratio of the offspring?

五、When a student mixes 50 mL of 1.0 M (= 1.0 mol/L) HCL and 50 mL of 1.0 M NaOH in a coffee-cup calorimeter, the temperature of the resultant solution increases from 21.0°C to 27.5°C. Calculate the enthalpy change for the reaction in kJ/mol HCl, assuming that the calorimeter loses only a negligible quantity of heat, that the total volume of the solution is 100 mL, that its density is 1.0 g/mL, and that its specific heat is 4.18 J/g-K.

110年 - 110 國立臺灣大學_碩士班招生考試_植物病理與微生物研究所甲組:植物病原微生物學#101840

108年 - 108 國立臺灣大學_碩士班招生考試試題：植物病原微生物學#139920

107年 - 國立臺灣大學107學年度碩士班招生考試試題 植物病原微生物學#139917

106年 - 106 國立臺灣大學_碩士班招生考試試題：植物病原微生物學#139915