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化学 高校生

(2)の問題で解答と自分で書いたものが少し違うのですが、これは間違いですか?

解 らなる。 に多く含 ”の エクセル 多糖類の分子式 CH₂C H2N ( ものを()といい, 半合成繊維に分類される。 セルロースを水酸化ナトリウムで処理し、 二硫化炭素を反応させたのち,希硫酸中に 押し出して繊維にしたものを(*)という。 (熊本大改) ヒドロキシ基に注目すると [C6H7O2 (OH)317 と表される。 (1)(ア) グリシン (イ) L (ウ) 必須 (2) COOH H 570 α-アミノ酸 タンパク質を構成するα-アミノ酸は約20種類が 知られており, R を側鎖として図1のように表すことができる。 (ア) を除く α-アミノ酸は不斉炭素原子をもつためL体とD体の鏡像異性体 (光学異性体) が存在するが, 生体内ではほとんど(イ) 体が使われてい る。また,9種類のα-アミノ酸はヒト体内では合成できないため、食 物から摂取しなければならず, (ウ) アミノ酸といわれる。 (1) 文中の (ア)~ (ウ)に適当な語句を答えよ。 (2)図2は,D体のアラニンを表している。 L体の構造を図2にならっ臨腸や て記せ。 ただし, ■は紙面の手前, 11111は紙面の向こう側を示している。 2CH.N K ア)をアセトンに溶かしたあと、 OH H (HOO グリシン以外のアミノ酸は不斉炭素原子をもち, L体とD体 の鏡像異性体が存在する。 天然に存在するアミノ酸はほとんどL体であるが,近年D体の 存在や役割が少しずつ報告されている。 鏡 COOH 1 DICT C CH 3 CH3C H NH2 H2N D 体のアラニン L体のアラニン LARGU エクセル アミノ酸のD体とL体では,密度や融点など物理的性質は 同じであるが, 生体への作用が異なる。 COOH (1) H-CH-COOH (2) (+) CH₂-CH-COOH HOOO-HOH 27 天然高分子化合物 271 BYFFRINKUPA グリシン HN HOO H-CH-COOH NH, 不斉炭素原子がない H R-C-COOH NH2 α-アミノ酸の構造 HOOO-R-CH-COOH 1 NH2 図 1 H D体のアラニン 図2 CHN Rはアミノ酸側鎖とよばれ る。 グリシン以外のアミノ 酸は赤字のC原子が不斉 炭素原子になる。 COOH CHCH3 NH₂

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英語 高校生

全文訳お願いします!

4 20 科学 420 words Chapter 1 The recipe for making any creature is written in its DNA. So last year, when 1-1 geneticists* published the near-complete DNA sequence of the long-extinct woolly mammoth, there was much speculation about whether we could bring this giant creature back to life. 5 東京理科大学 Creating a living, breathing creature from a genome* sequence that exists only in a computer's memory is not possible right now. But someone someday is sure to try it, predicts Stephan Schuster, a molecular biologist at Pennsylvania State University and a driving force behind the mammoth genome project. So besides the mammoth, what other extinct beasts might we bring back to life? Well, 12 10 it is only going to be possible with creatures for which we can recover a complete genome Without one, there is no chance. And usually when a creature dies, the (1) - DNA in any flesh left untouched is soon destroyed as it is attacked by sunshine and bacteria. sequence. There are, however, some circumstances in which DNA can be preserved. If your 15 specimen froze to death in an icy wasteland such as Siberia, or died in a dark cave or a really dry region, for instance, then the probability of finding some intact stretches of DNA is much higher. Even in ideal conditions, though, no genetic information is likely to survive more than a million years. - so dinosaurs are out and only much younger remains are likely to yield good-quality DNA. "It's really only worth studying specimens that are less than 100,000 years old," says Schuster. The genomes of several extinct species besides the mammoth are already being sequenced, but turning these into living creatures will not be easy. "It's hard to say that something will never ever be possible," says Svante Pääbo of the Max Planck Institute 25 for Evolutionary Anthropology in Germany, "but it would require technologies so far removed from what we currently have that I cannot imagine how it would be done." But then (3) 50 years ago, who would have believed we would now be able to read the instructions for making humans, fix inherited diseases, clone mammals and be close to creating artificial life? Assuming that we will develop the necessary technology, we have 30 selected ten extinct creatures that might one day be resurrected. Our choice is based not just on practicality, but also on each animal's "charisma" - just how exciting the prospect of resurrecting these animals is. 1-3

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英語 高校生

どなたか教えて頂きたいです🙇‍♀️

れる) い いる いる) いる) /201 る) る) =) ① History is studied by many people. When was the job finished ? 仕事はいつ終わりましたか. ② The park is cleaned by the students. These cards are sent by Mary. → ④ French is spoken in Canada. ⑤ The song was sung by Britney. → ⑥ The two girls were introduced to you by Misaki. 「~される「~された]」 の文を 「~されるか [~されたか]」 という文に書きかえなさい. This bookie read by many children. is this book read by many children ? ⑦ The ball was hit by Ichiro. ⑧ These flowers were grown by Keiko. ① Where( ② What time ( ③ When( ④ Why ( ⑤ What ( 6 When ( ⑦ How ( ⑧ Which dictionary ( 日本語に合うように,< >内の動詞を使って文を完成させなさい. Where( was ) the man ( seen ) by Yuri? <see> ) the bird ( ) the dogs ( ) the trees ( ) the desks ( ) ( ) the castle ( ********* 受身形の疑問文 ) the story ( ) ( by many people ? 月 by Keiko ? by the students ? by Mary? in Canada? by Britney? 日 /16 to you by Misaki ? by Ichiro ? )by your father ? 〈cook〉 )?〈build> 2² ( ) by the writer? (write) (どこで見られたか) ) in Japan? (see) (どこで見られるか) ) to the park every morning? (take) (何時に連れて行かれるのか) ) down? (cut) (いつ切り倒されたのか) __) over there? <move> (なぜ向こうに動かされたか) (何が料理されたか) (いつ建てられたか) )by the man ?〈buy〉 どのようにして書かれたか) (どの辞書が買われたか )

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