46. During the β-oxidation of the given fatty acid,, which metabolite could be correct?

(A) ①③⑤
(B) ⑤
(C) ②③⑤
(D) ②④⑤
(E) ①②③④⑤

47. Which biological molecule plays key role to transport long chain fatty acids into mitochondrial matrix? (Five different molecules provided) (A)(B) (C)(D)(E)

48. You extract RNA from liver cells and then carry out an agarose gel electrophoresis of the liver RNA. The RNA fragments are then transferred to an RNA-binding membrane (nitrocellulose or nylon) using capillary action. Next, you hybridize a probe for gene X to the RNA on the membrane. Which of the following statements regarding your experiment is true? (A) You are trying to determine how many copies of Gene X are in liver cells. (B) You are trying to determine if Gene X is expressed in liver cells. (C) You are trying to determine if the Gene X protein is present in liver cells. (D) You are trying to determine the chromosomal location of Gene X. (E) You are trying to determine whether Gene X has a mutant sequence.

49. Suppose the lac repressor of E. coli is mutated so that it never binds to the operator. Which of the following is true? (A) Glucose digesting enzymes are never produced. (B) Lactose digesting enzymes are never produced. (C) Lactose digesting enzymes are always produced. (D) The result depends on the concentration of glucose. (E) None of the above.

50. The Nobel Prize in Physiology or Medicine 2009 was awarded jointly to Blackburn, Greider and Szostak for the discovery that chromosomes are protected by telomeres and the enzyme telomerase is highly correlated with aging and cancer in animals. Which of the following statements regarding telomere and telomerase is correct? (A) Telomerase is a DNA exonuclease. (B) Telomerase is an RNA polymerase. (C) Embryonic cells possess long telomeres and high telomerase activity. (D) Telomeres are longer and telomerase is inactive in cancer cells. (E) Telomeres are longer and telomerase is highly active in somatic cells.

1. 下列哪一種輻射偵檢器因二次電子的嚴重氣體增殖，導致產生許多重覆的假訊號，故需要作淬熄(Quenching)？ (A)半導體偵檢器 (B)蓋革計數器 (C)無機閃爍偵檢器 (D)游離腔

2. 以 X 光照射哺乳類細胞，當它接受 1 Gy 的劑量，所產生的雙股斷裂與單股斷裂的比值為多少？ (A) 0.004 (B) 0.04 (C) 0.4 (D) 4

3. 某校正射源 A 之計測值為 18000 及射源 B 之計測值為 9000，則 A 與 B 之計測值比值及標準差為何？ (A) 2 ± 0.026 (B) 2 ± 0.013 (C) 2 ± 0.052 (D) 2 ± 1.414

4. 下列何者的半化期最長？ (A)(B)(C)(D)

5. 加馬射線在屏蔽中可能經過二次或多次散射才抵達偵檢器位置，這種效應通常可以利用增建因數來修正，請問增建因數與下列特性何者無關？ (A)加馬射線的能量 (B)加馬射線的強度 (C)屏蔽物質的厚度 (D)屏蔽物質的原子序

6. 下列關於氣體偵檢器的敘述何者正確？ (A)游離腔的靈敏度較蓋革計數器高 (B)游離腔的操作電壓較蓋革計數器低 (C)比例計數器常用之 P-10 氣體之組成為 10% Ar + 90% CH4 (D)比例計數器無法偵測阿伐(α)

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