問題詳情
15. In a hypothetical situation, the genes for sex pilus construction and for tetracycline resistance are located together on thesame plasmid within a particular bacterium. If this bacterium readily performs conjugation involving a copy of thisplasmid, then the result should be ____.
(A) the rapid spread of tetracycline resistance to other bacteria in that habitat.
(B) the subsequent loss of tetracycline resistance from this bacterium.
(C) the production of endospores among the bacterium's progeny.
(D) the temporary possession by this bacterium of a completely diploid genome.
(E) a transformed bacterium.
(A) the rapid spread of tetracycline resistance to other bacteria in that habitat.
(B) the subsequent loss of tetracycline resistance from this bacterium.
(C) the production of endospores among the bacterium's progeny.
(D) the temporary possession by this bacterium of a completely diploid genome.
(E) a transformed bacterium.
參考答案
答案:A
難度:適中0.666667
統計:A(4),B(0),C(0),D(0),E(2)
內容推薦
- Which of the following descriptions about "regulating of enzyme activity in metabolism"
- The eyes of mammalian and octopus are similar in structure and function. Which of following hypo
- 以下有關植物葉子泌液作用的描述,何者正確?(A) 土壤水分充足時,根壓是葉片出現泌液作用主要的原動力(B) 泌液作用是植物根部吸收的水經由導管或假導管向上運送到葉片後,水由氣孔以液態滲出葉表(
- 關於生物個體之基因體,下列何者正確?(A) 各種生物個體之基因體 DNA 中四種鹼基比例相同 (B) 真核生物之基因體 DNA 含有許多重複性序列(C) 真核生物基因體中的基因密度通常比原核生
- Bacteria is one of major group of prokaryotes, which of the following description about "bac
- Which of the following descriptions about "toxin in the environment" is INCORRECT?(A) T
- 有一機械工廠即將以吊車進行機具搬遷,請問吊車在吊起車床時,應採下列哪一螺栓,再以吊車進行搬遷作業? (A)環首螺栓(B)貫穿螺栓(C)地腳螺栓(D)T形螺栓
- 在沒有使用其它輔具之下,單獨使用一般型之游標卡尺來測量,請問哪一種無法量測?(A)螺紋節徑(B)階級深度(C)孔內徑(D)圓桿外徑
- Which statement about variation is true?(A) All new alleles are the result of nucleotide variabi
- Which sex determination system is suitable for the following descriptions?There is only one type
內容推薦
- 1982 年分子生物學家 Tomas Cech 和其同事,在原生動物纖毛蟲發現有些 _______片段具有生物酶催化的特性,被稱為_____。(A) DNA: helicase (B) DNA
- 葡萄糖代謝反應中,下列何種反應會產生最多 CO2 ?(A) 醣解作用(glycolysis) (B) 檸檬酸循環(the citric acid cycle)(C) 電子傳遞鏈(electro
- 下列哪一種選殖載體(cloning vector) 可以攜帶較大的嵌入 DNA 片段?(A) 質體(plasmid) (B) 噬菌體(bacteriophage)(C) 噬質體(cosmid)
- Mendel's observation of the segregation of alleles in gamete formation has its basis in whi
- 將仙人掌的葉片加水磨碎,取其濾液,測量其 pH 值,下列哪一個時間取下的葉片,pH 值最低?(A) 上午 6 時 (B) 中午 12 時 (C) 下午 6 時 (D) 子夜 12 時
- 機械力學中,1牛頓爲使質量1 kg之物體產生多少之加速度所需之力?(A) 0.98 mm/sec2 (B) 8 mm/sec2(C) 0.98 m/sec2 (D)8 m/sec2
- 一個 tRNA 帶有補密碼子(anticodon) 3’-UAC-5’,請問它會攜帶何種胺基酸以供應蛋白質之合成?(AUG: Met﹔CAU:His﹔UAC: Tyr﹔GUA: Val)(A)
- Abnormal chromosomes are frequent in malignant tumors. Errors such as translocations may place a
- C4 植物與 CAM 植物進行光合作用,有何相似之處?(A) 兩者都僅用到光系統 I (photosystem I)(B) 這兩類植物都不是用 Rubisco 當作固碳的第一個酵素(C) 這兩
- A new species of plant could be originated by hybridization coupled with ________(A) autopolyplo
- 下列有關摩擦的敘述何者正確?(A)將滑動接觸改爲滾動接觸可增加摩擦力 (B)摩擦力的方向恆與物體運動方向相同 (C)摩擦力的大小與接觸面積無關 (D)摩擦力的大小與相對滑動速度的大小有關
- 下列有關蕨類植物的敘述,何者正確?(A) 配子體需依靠孢子體存活 (B) 具有明顯的直立莖(C) 減數分裂發生在孢子囊內 (D) 受精作用不需要外在水分做為媒介
- 有關單位之敘述,下列何者錯誤?(A)lμm=0.001 m(B)牛頓是力的單位(C)1KW=1000瓦特(D)N/mm2爲應力之單位
- 人體基因體解序後,預測具有編碼功能的基因數目為 25,000~30,000,但人體產生的蛋白質種類超過 10 萬,下列哪些機制可解釋其原因?甲、三位一體的基因密碼子(triplet codon
- RFLP analysis can be used to distinguish between alleles based on differences in which of the fo
- 裝礦泉水之寶特瓶的材料一般是採用哪種塑膠?(A)PVC(B)PET(C)PP(D)ABS
- 下列何種構造為種子植物所具有,但不出現在任何蕨類植物或苔蘚植物中?(A) 假根 (B) 子葉 (C) 假導管 (D) 篩管細胞
- The volume enclosed by the plasma membrane of plant cells is often much larger than the correspo
- —般工廠硏磨碳化鎢刀具等特硬材料,宜選用下列何種砂輪?(A)褐色氧化鋁砂輪(B)白色氧化鋁砂輪(C)綠色碳化矽砂輪(D)鑽石砂輪
- Overexploitation encourages extinction and is most likely to affect ____.(A) most organisms that
- 依據CNS規定,投影採用第一角法時,正投影中的俯視圖應置於前視圖的哪個方位?(A)左方(B)右方(C)下方(D)上方
- 在機械業的術語中,EDM是指何種加工的縮寫?(A)放電加工(B)電槳加工(C)電子束加工(D)超音波加工
- You are observing a population of lizards when you notice that the number of adults has increase
- In the thylakoid membranes, what is the main role of the antenna pigment molecules?(A) concentra
- 一般若要測量一公差爲±0.05mm的車床製階級零件,採用下列何種量具較爲適宜?(A)分厘卡(B)鋼尺(C)游標卡尺(D)三次元測量儀