資訊推薦

• 26 某一梁具如圖之橫斷面，且已知其對形心軸 z 之慣性矩為 。若此橫斷面承受剪力 V=6 kN 作用，則最大剪應力為何？ (A) 0.465 MPa(B) 0.838 MPa(C) 0.931 M
• 【題組】20. (A) are(B) were(C) will be(D) would be
• 7. Which of the following statements about steroid receptors is false?(A)The receptors are localized
• 9. Proteins that are involved in the regulation of the cell cycle, and that show fluctuations in con
• 8. Place the following events of mitosis in the correct order. I. Sister chromatids align on the met
• 10. Which of the following statements about human sexual life cycle is false?(A)Gametes are the only
• 11. What was the most significant conclusion that Gregor Mendel drew from his experiments with pea p
• 12. In certain plants, tall is dominant to short. If a heterozygous plant is crossed with a homozygo
• 14. Individuals with the disorder xeroderma pigmentosum are hypersensitive to sunlight. This occurs
• 13. If one nondisjunction event occurs in meiosis II during gametogenesis, what will be the result a
• 【題組】21. (A) says(B) said(C) will say(D) would say
• 16. Alternative RNA splicing(A)is a mechanism for increasing the rate of transcription.(B)is a mecha
• 15. What is a ribozyme?(A)an RNA with enzymatic activity(B)an enzyme that modifies ribosomal RNA(C)
• 17. Which of the following statements about microRNAs is false?(A)MicroRNAs are short RNA molecules.
• 18. Which of the following statements describes proto-oncogenes?(A)Their normal function is to suppr
• 19. Muscle cells differ from nerve cells mainly because they(A)contain different genes.(B)express di
• 1. 2020 年 COVID-19 在全球肆虐，許多歐美經濟強國卻因醫療防護口罩欠缺，引發嚴重的社經安全問題。純就經濟因素考慮，這些國家口罩不足的現象，最適合以下哪種經濟地理概念來解釋？(A)工業慣
• 20. What are prions?(A)mobile segments of DNA(B)tiny molecules of RNA that infect plants(C) misfolde
• 21. The reason for using Taq polymerase for PCR is that(A)only minute amounts are needed for each cy
• 22. Why might the cricket genome have 11 times more base pairs than that of fruit fly?(A)The two ins
• 23. What characteristic of short tandem repeat DNA makes it useful for DNA fingerprinting?(A)The num
• 24. What is the correct sequence of the following events, under the influence of natural selection?1
• 25. In peas, a gene controls flower color such that R = purple and r = white. In an isolated pea pat
• 28. The chloroplasts of all of the following are thought to be derived from ancestral red algae, exc
• 26. The recessive allele that causes phenylketonuria (PKU) is harmful. What maintains the presence o