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生物 高校生

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Test II PROBLEM SOLVING Directions: Answer the question and show your complete solution in the separate paper. 1. Suppose the cells lining of your cheeks can completely di vide every 24 hours. Assuming no cells die in the process, how many cheek cells will be there after 7 days if you started with 5 cheek cells? 2. If an organism has 15 pairs of homologous chromosomes, how many chromosomes will each daughter cell have after telophase of mitosis? Test I. Complete the concept in mitosis has the Cell division Purpose of which have occurs in through (10. condeneed which Includes or noncondensed which include 5。 温 a loop of DNA which Includes (in order) which form sister 9. during 12. (13. 14. which is followed by 15. which Is followed by (16. which includes (in order). 17. 19. >(20. What's New In meiosis the cell goes through similar stages in mitosis and uses similar strategies to organize and separate chromosomes. However, the cell has a more complex task in meiosis. It still needs to separate sister chromatids (the two halves of a duplicated chromosome), as in mitosis. But it must also separate homologous chromosomes, the similar but non-identical chromosome pairs an organism receives from its two parents. These goals are accomplished in meiosis using a two-step division process. Homologue pairs separate during a first round of cell division, called meiosis I. Sister chromatids separate during a second round, called meiosis III. Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase. Stages of Meiosis I In meiosis I, homologous chromosomes are separated into two cells such that there is one chromosome (consisting of

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英語 高校生

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1日本語に合うように、 ()内の語句を並べかえて英文を完成させなさい。 1.チケットを手に入れるために, 朝とても早く行列に並んだ。 I stood in line very early in the morning ( to/ in/a ticket / get / order)。 2.半年ぶりにジュリアと会った。 I saw Julia (months / six / time / for / in/ the first ). 3.ダニエルが間もなくシカゴに引っ越すと聞いてとても悲しい。 I'm(hear / sad / that / to / very ) Daniel is moving to Chicago soon. 2 日本語に合うように, ( )に適切な語を入れなさい。 1.繁華街に行くには地下鉄に乗るとよい。 You should take the subway ( 2. 熱がある。さらに悪いことには, 咳もひどい。 I have a fever.( ),I have a bad cough, too. 3. 幸運にも,私たちは渋滞を避けることができた。 ), we were able to avoid the traffic jam. 4. ビルは両手をポケットに入れたまま, 立ち話をした。 Bill stood talking( ) his hands ( ホコ 3日本語に合うように, 下線部に適切な語句を補いなさい。 1. 皿を洗いながら, 母と私は旅行について話をした。 My mother and I talked about the trip, 2. 雲に覆われていたので, 空は暗くどんよりとして見えた。 tov oe the sky looked dark and dull. 3. 親せきに会うために家族で広島に行った。 (relatives) My family went to Hiroshima 4.交通機関の発達により, 1日で日本のほとんどどこへでも行くことができる。 (advances) We can go almost anywhere in Japan withina day in transportation. Partl Lesson /

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