49. 假設植物細胞膜上所產生及維持的質子梯度（proton gradient）被一個化學物質所 干擾而破壞，請問下列各個過程，何者不受此化學物質的直接影響？
(A)韌皮部的裝載過程（loading）
(B)氣孔的打開
(C)光合作用
(D)木質部的運送過程。

45. 蛋白體學（proteomics）遭遇了一些特殊的挑戰，下列敘述何者錯誤？ (A)人類中的蛋白質數目可能超過其基因的數目 (B)一個細胞中的蛋白質會因細胞類型的不同而有所不同 (C)蛋白質的結構和化學特性會有極端的差異 (D)以上皆非。

46. 下列對“探針”（probes）的敘述，何者錯誤？ (A)它們是單股的 DNA 片段（segments）或 RNA 片段 (B)其是與有興趣的 DNA 片段使用相同的限制酶（restriction enzyme）而產生 的 (C)通常探針必需用放射性同位素或螢光劑來標定 (D)在許多情況下，從一個生物取得的探針可用來標示出其它生物中與其同源 的 DNA 片段（homologous DNA segment）。

47. 下列對於細胞誘導作用（induction）的敘述，何者錯誤？ (A)誘導訊息（signals）幾乎通常都是小的碳水化合物 (B)誘導作用通常包括轉錄作用的調控 (C)誘導作用可能包括剌激細胞進行死亡、分裂或生長 (D)誘導作用包括細胞間的溝通（communication）。

48. 在一個大而進行有性生殖的族群中，某一對偶基因的頻率從 60%降至 20%，從這 種改變，可以很有邏輯地推測在這個環境裏： (A)這個對偶基因與一個致死對偶基因連鎖 (B)這個對偶基因降低了它的適當性（fitness） (C)這個對偶基因直接進行了突變 (D)隨機的過程（random processes）改變了對偶基因的頻率。

50. “從研究現代原核生物，我們可以絕對地確認新陳代謝途徑（metabolic pathways） 是如何演化的。”這個陳述： (A)是對的，因為所有化石証據顯示古代的原核生物與現代原核生物非常相像 (B)是錯的，因為我們沒有古代新陳代謝途徑的証據 (C)不可能去評斷，因為古代的原核生物全部死亡了 (D)是錯的，因為我們對早期新陳代謝途徑的瞭解通常都是假設性的。

51 Your web application requires the adding and deleting of many session attributes during a complex use case. A bug report has come in that indicates that an important session attribute is being deleted too soon and a NullPointerException is being thrown several interactions after the fact. You have decided to create a session event listener that will log when attributes are being deleted so you can track down when the attribute is erroneously being deleted. Which listener class will accomplish this debugging goal? (A) Create an HttpSessionAttributeListener class and implement the attributeDeleted method and log the attribute name using the getName method on the event object. (B) Create an HttpSessionAttributeListener class and implement the attributeRemoved method and log the attribute name using the getName method on the event object. (C) Create an SessionAttributeListener class and implement the attributeRemoved method and log the attribute name using the getAttributeName method on the event object. (D) Create an SessionAttributeListener class and implement the attributeDeleted method and log the attribute name using the getAttributeName method on the event object.

52 You have a use in your web application that adds several session-scoped attributes. At the end of the use case, one of these objects, the manage attribute, is removed and then it needs to decide which of the other session-scoped attributes to remove. How can this goal be accomplished? (A) The object of the manager attribute should implement the HttpSessionBindingListener and it should call the removeAttribute method on the appropriate session attributes. (B) The object of the manager attribute should implement the HttpSessionListenar and it should call the removeAttribute method on the appropriate session attributes. (C) The object of the manager attribute should implement the HttpSessionBindingListener rind it should call the deleteAttribute method on the appropriate session attributes. (D) The object of the manager attribute should implement the HttpsessionListener and it should call the deleteAttribute method on the appropriate session attributes.

53 A JSP includes computations that might cause an exception. Scripting is not permitted by your IT Certification Guaranteed, The Easy Way! 21 company coding standards. You do not want the user to see an exception stack trace. What should you do? (A) Include a page directive at the top of the page indicating a JSP that is to be used when the exception arises. (B) Include an isError tag surrounding the JSP elements that might cause the exception. (C) Include a try/catch block surrounding the JSP elements that might cause the exception. (D) Nothing is needed, JSP pages handle exceptions cleanly. (E) Include a handler for this exception in the standard error handling page.

複選題54 Given the annotation for MyServlet: @WebServlet{"/abc") @ServletSecurity (value=@HttpConstraint) public class Myservlet extends Httpservlet { Which two are true? (Choose two) (A) No protection of user data must be performed by the transport. (B) All user data must be encrypted by the transport. (C) Access is to be denied independent of authentication state and identity. (D) Only authenticated users are to be permitted. (E) Access is to be permitted independent of authentication state and identity.

55 A servlet wishes to indicate that it is unable to initialize at the present time, but that the initialization might succeed at some future time. Which is true? (A) This cannot be expressed. A servlet either initializes correctly or fails. (B) This expression is not necessary. If a servlet fails to initialize, the container will try again later each time a request is received that attempts to invoke that servlet. (C) The servlet should delay until it is ready to complete initialization successfully. (D) The servlet should throw an UnavailableException (E) The servlet should throw a servletException