問題詳情
27. Which of the following best describes directional selection?
(A) Two or more phenotypes are common and drive diversity.
(B) It occurs when one extreme phenotype has an advantage over all other phenotypes.
(C) Larger individuals in a population have higher rates of survival than average and small individuals.
(D) All of the above.
(E) B and C are correct.
(A) Two or more phenotypes are common and drive diversity.
(B) It occurs when one extreme phenotype has an advantage over all other phenotypes.
(C) Larger individuals in a population have higher rates of survival than average and small individuals.
(D) All of the above.
(E) B and C are correct.
參考答案
答案：B
難度：非常困難0.142857
統計：A(0),B(1),C(1),D(0),E(3)
內容推薦
- 3 針對鬱血性心臟衰竭病患接受運動訓練時，下列那些生理變化的敘述，表示可能有心臟功能惡化的情形？①急性肺水腫造成心搏過速 ②第三心音之發生 ③肺部囉音（pulmonary rales）之發生 ④ 脫水
- Collenchyma cells can be recognized by(A) lignin in the cell walls.(C) their unevenly thickened
- "Which of following characteristics can distinguish protostome from deuterostome development
- 'When an illuminated rod or cone stimulates a horizontal cell, the horizontal cell inhibits
- 2 下列有關各階段心臟復健主要目的之敘述，何者錯誤？(A)第一階段：穩定病人的情況，致力減少危險因子 (B)第二階段早期：評估心血管系統對運動之反應 (C)第二階段後期：增加運動、活動的耐受力 (D)
- Which of the following is NOT a force that changes gene frequencies for populations?(A) mutation.
- Which of the following is a correct sequence of processes that takes place when a flowering plant
- 10要確保機具設備之良好狀況下列何者正確(A)定期檢查(B)保持刀具之銳利(C)保持機具清潔(D)潤滑用油不必考慮黏度。
- 五、試說明原生動物在環工上的意義。（20 分）
- 四、試繪圖說明河川自淨作用之過程（BOD、DO、氮之濃度變化）與微生物種類之變化。（20 分）
內容推薦
- 2 冠狀動脈繞道手術後之病患於接受運動訓練後，其生理相關機能改善之敘述，下列何者正確？①可增進最大攝氧量的改善，其中又以訓練前攝氧量高者改善最為明顯 ②改進周邊系統，相對降低心 臟作功率 ③改善中樞效
- 4 心肌梗塞後植入人工節律器病患，有關執行運動計畫及其可能成效之敘述，下列何者正確？①手搖機比腳踏車適合 ②在住院期，可用一般心肌梗塞後之訓練標準，如心跳之訓練強度為基準 ③可 用血壓反應訂定運動訓
- 22 如圖所示，穩態時電容C1所儲存的能量為多少焦耳？(A) 10(B) 5(C) 5(D) 1
- In a ___ distribution, many sample plots will contain few or no individuals while other plots wi
- What do budding and fragmentation have in common?(A) Both are types of asexual reproduction. (B)
- 3 依據下列患者之心射出率（ejection fraction），何者應考慮心臟移植？(A) 50% (B) 40% (C) 35% (D) 20%
- 5 下列那些症狀是主動脈閉鎖不全（aortic regurgitation）之臨床特點？① S2 心雜音 ②左心室擴大 ③左心室舒張末期壓（end-diastolic pressure）高 ④肺水腫
- Consider this pathway: bitter molecules → G-protein→ phospholipase C → IP3 →raised [Ca2+]→ cellu
- 6 T10 完全脊髓損傷的患者，下列那些呼吸功能之敘述是正確的？①肋間肌完全正常 ②腹肌完全正常 ③肺總容積量不變 ④咳嗽功能正常 (A)①②③④ (B)僅①②③ (C)僅③④ (D)僅③
- 四、有位試驗者設計了一個田間試驗，此試驗包含有兩個參試因子分別以 A, B 表示，A 因子有四個變級 a1, a2 , a3 , a4 ，B 因子則有三個變級 b1 , b2 , b3 ，一共有 12
- Vhich of the following is a land plant that produces flagellated sperm and has a sporophyte-domi
- 'Which of the following processes is most directly driven by light energy?(A) Creation of a
- The thick band of nerve fibers that connect the right and left cerebral hemispheres in placental
- 9 依據美國紐約心臟學會對心臟病人之治療分級，如病人於一般活動不需限制、但應避免不尋常出力 或競賽性之活動，其分級屬第幾級？ (A)第 A 級 (B)第 B 級 (C)第 C 級 (D)第 D 級
- Which of the following is INCORRECTLY paired?(A) hair cell-mechanoreceptor. (B) muscle spindle-me
- 4 王先生的動脈血液氣體分析的結果如下：PaCO2 = 45 毫米汞柱，pH < 2，PaO2 = 75 毫米汞柱，HCO3 = 20 mEq/L，判讀應為： (A)呼吸性酸中毒 (B)呼吸
- 'Which of the following does NOT occur during the Calvin cycle?(A) carbon fixation. (B) oxi
- The capillary system that serves the loop of Henle, is called(A) vas deferens. (B) macula densa.
- Groups of plant or animal subpopulations which are spatially isolated but exchange individuals i
- V{nich of the following statements concerning the components of ATP synthase on inner membrane of
- The immediate, direct effect of auxin in cell elongation, according to the acid growth hypothesi
- 'Which of the following statements is most compatible with the "source-sink" conc
- 'Which of the following occurs when a skeletal muscle fiber contracts?(A) The myosin head i
- Which of the following situations dose NOT increase species diversity in a cornmunity?(A) predat
- What is the reason for fluid being forced out of systemic capillaries at the arteriole end?(A) Th