年級

科目

問題的種類

Clearnote

動態消息
公開筆記
Q&A
讚
自然科學 大學

想請問懂微生物的大大～空白和打星號的題目🙏

9 1. (0)目前最小,構造最簡單之微小生物為(A)細菌(B)乳酸菌(C)徵菌(D)病 毒2. (b)微生物之大小約為(A)1-10mm (B)1-10um (C)1-10mm (D)1-10m 3. (D)下列何者非真菌類(A)酵母菌(B)靈芝(C)徵菌(D)乳酸菌 4. (b )下列何者非真核生物(A)酵母菌(B)人類(C)大腸桿菌(D)靈芝 5. (b)生物之五界不包括(A)動物界(B)細菌界(C)植物界(D)真菌界(E)原生生 物界 1. D)下列哪一位科學家用自製之國微鏡觀察生物?(A)李斯特(B)李文霍克 (C)巴斯德(D)柯霍 2. (b)“腐肉生姐”之論述屬於(A)生源論(B)自然發生說(C)進化論(D)生命 來自另一生命物質 3. (C)吃細菌之病毒稱為(A)AIDS 病毒(B)菌病毒(C)嗜菌體(D)濾過性病毒 4. (C)存在大腸桿菌中,且常被用來執行基因工程之一圓形小的DNA),叫做 (A)擬核區(B)染色體(C)質體(D)基因 5. (C)下列哪一位科學家提出生源論?(A)虎克(B)李文霍克(C)巴斯德(D)柯霍 1. (b)英國科學家佛萊明研究金黃色葡萄球菌時受徽菌污染因而發現何種抗生 素(A) streptomycin (B) penicillin (C) tetracycline (D) erythromycin 2. (2)英國科學家佛萊明研究哪種微生物時因時受徽菌污染因而發現抗生素 (A)大腸桿菌(B)酵母菌(C)病毒(D)金黃色葡萄球菌 1. (V ) 下列哪一位科學家建立疾病的細菌根源說?(A)虎克(B)李文霍克(C)巴 斯德(D)柯霍 2. (2)微生物之科學命名包括”屬名”及(A)真名(B)科名(C)株名(D)種名 3. (0 DDNA 雙螺旋結構是由科學家Watson 與下列何者所發表?(A)Pasteur (B) Koch (C) Fleming (D) Crick 4. (C)吃細菌之病毒稱為(A)AIDS 病毒(B)菌病毒(C)嗜菌體(D)濾過性病毒 5.(C)存在大腸桿菌中,且常被用來執行基因工程之一圓形小的 DNA,叫做 (A)擬核區(B)染色體(C)質體(D)基因 (C)1. (10X 接目鏡與 400接物鏡下觀察菌體放大倍數為多少倍?(A)40 (B)100 (C)400 (D)1000 (b)2. 何種顯微鏡使用可見光當照明源,標本呈現在亮背景中?(A)暗視野顯 微鏡(B)亮視野顯微鏡(C)螢光顯微鏡(D)以上皆非 (*)1. 大腸桿菌之革蘭氏染色結果為(A)粉紅色(B)黃色(C)藍紫色(D)黑色 (四)2. 有外膜的細菌屬於(A) 革蘭氏陽性菌(B)革蘭氏陰性菌(C)酵母菌(D)徵 菌·革蘭氏染色時依序需要哪四種試劑處理? (B)1.下列哪一種細菌之超微結構不在細胞壁外面(A)鞭毛(B)細胞膜(C)線毛 (D)夾膜 (C)1.下列對原核細胞與真核細胞之描述何者為非?(A)原核細胞無細胞核(B) 真核細胞有細胞壁(C)原核細胞沒有細胞壁(D)真核細胞含細胞核 次

尚未解決 回答數: 0
社會科學與法律 大學

經濟學 第二章 The Economic Problem 主要想請教第十九題的c和d 僅先致謝沈

malaria cases on the y-axis. On your graph, (1) Draw a marginal cost curve and a marginal benefit curve that are consistent with Bruno Moonen's opinion. (ii) Identify the quantity of malaria eradicated that achieves allocative efficiency. 1 ? Gains from Trade Use the following data to work Problems 18 and 19. Fadi can produce 10 baklavas (a Turkish pastry) or 250 bars of chocolate an hour. Hania can produce 30 baklavas or 90 bars of chocolate an hour. 18. a. Calculate Fadi's opportunity cost of a baklava and Hania's opportunity cost of a baklava. b. If each spends 30 minutes of each hour baking baklavas and 30 minutes producing chocolate, how many baklavas and chocolate bars does each produce? c. Who has a comparative advantage in produc- ing (1) baklavas and (ii) chocolate bars? 19. a. Draw a graph of Fadi's PPF and Hania's PPF and show the point at which each produces when they spend 30 minutes of each hour producing baklavas and 30 minutes producing chocolate bars. b. On your graph, show what Fadi produces and what Hania produces when they specialize.

尚未解決 回答數: 1
數學與統計 大學

請問這題這樣寫正確嗎~

19. Length of Calls to the IRS. According to the IRS, taxpayers calling the IRS in 2017 waited 13 minutes on average for an IRS telephone assister to answer. Do callers who use the IRS help line early in the day have a shorter wait? Suppose a sample of 50 callers who placed their calls to the IRS in the first 30 minutes that the line is open during the day have a mean waiting time of 11 minutes before an IRS telephone assister answers. Based on data from past years, you decide that it is reasonable to assume that the standard deviation of waiting times is 8 minutes. Using these sample results, can you conclude that the waiting time for calls placed during the first 30 minutes the IRS help line is open each day is significantly less that the overall mean waiting time of 13 minutes? Use a = .05.

待回答 回答數: 0
自然科學 大學

一直算都錯😖，求解

Problem: relative to 丸 Is om always smaller than zz, larger than we orthe same Ph as uu, or does it have sorme other shed k 中 Telationship? COTn- TeaS,。 (4 Lisa rushes down onto a subway 7? 1the Platform to find her train already 主 leparting. She stops and watches b the cars go by. Fach car is 8.60 m ( 語 long. The first moves past her in 站 1.50 sand the second in 1.10 5. 實 Find the constant acceleratlion Of 時 則 thetralin. With )eSlt CHALLENGE PROBLEMS np lt hes is 42. Two thin rods are fastened to ~e on the inside of a cCircular TIng as shown in Figure P2.42. One rod of length Dis vertical, and 17th the other of lenoth 了 makes an
待回答 回答數: 0
數學與統計 大學

33題，有人可以幫我列算式就好嗎 是波氏分配（卜瓦松分配）題目

CHMAPTER 6 smen er replacem es, muff plecitlons w 1r 同 the numper oftransmissf sen0C7 polsson 昌關 dmwpute 4 o Shop. The! te dett Ave/lino's Aut 字 ee 3 stributlon le butlon ls the an summary, the Polsson dis 呈ty dlstob n summar OP 4 needed to construct a Poiss 4 on aa random variable, desl9! errors, or other r: ellhood t 的 elikeli nedthejkelJncoo 同 on nsurance Company ge 1 polic surar From actuary taples, Washington 2 gten nsurance aty 』 age 25 wi qie within the next year is pay ity they wi 25-year-ojg men this year' whatis the probabilty 3 JjnaPoisson distributionn 三0.4 a. What is the probapility thatx三0 b. What is the probability thatx > 0? 32. 全a Poisson distributionh 二4 a. What is the probapbility thatx 三 2? b. What js the probapbiljty thatx 生 2? f experience, c. What js the probability thatx> 2? m her years ol 還 officer at Coast Bank and Trust. Fro ble to repay 9 inot bea she estimates that the probability is .025 that an applicant wi hs or her jnstajiment loan. Last month she made 40 1 父 What js the probability that three loans will be 和 sfaulted? 紀 What js the probability that at least three loans will be del tthe rate oftwo per Automobijles arrive at the Elkhart exit ofthe Indiana Tol 同 ibution minute. Tne distribution of arrivals approximates a Poisson distri 了人 a.- What is fhe Probabifity that no automopbiles arrive in a particular uiar Pp. what js fhe Propabjlity that at least one automobile arrives during mrnute? 5 站5 estimated that 0.5% ofthe Callers to the Customer Service department of Dell Jnc. wil receive a busy signal. whatis the probability that oftoday's 1,200 callers at reast 5 received a Pbusy signal? 。 生如e past schools jn Los Angeles Couni year for weafher enmergencies. What is 1 Counfy wi close for 4 days next year? 24 ty have closed an average of 3 days each he probability that schools in Los Angeles opapjlity distribution js a !ting apjjty associated wjth each Out( discrete propapjjity distribution can aSsume only certain values. The main features are: _The sum offhes probabilties is 1.00. The probapijlity ofa particular outcome is between 0.00 and 1.00. Jheoutcomes are mutually exclusive. ontinuous djsfribution can assume an jmfnite number ofvalues within a speecsi iean and variance ofa probability distribution are Computed as follows, mean js equalto: Come- ific rang variance js egqual to:
待回答 回答數: 0