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生物 高校生

32番の問題が全く分からないんですけどどうやって解くか教えてください。

D 遺伝暗号表 コドン codon mRNAの塩基配列が, タンパク質のアミノ酸配列を指定していることを学習した。 生 体内のタンパク質に含まれるアミノ酸は20種類存在するが, mRNAに含まれる4種類 の塩基配列で20種類のアミノ酸配列を指定できるのだろうか。 4種類のうちの3つの塩基で1個のアミノ酸を指定するのであれば、全部で64( 4 × 4 × 4 = 64) 通りであるから十分な数である。 この連続した塩基3個をトリプレットという。これらが20 種類のアミノ酸に対応している。 1960年ごろ、多くの研究者によって、それぞれのトリプレットがどのアミノ酸を指定するかが いでんあんごうひょう 突き止められ, 遺伝暗号表という表にまとめられた。 遺伝暗号表では, トリプレットがmRNA の塩基配列で表示され,各トリプレットをコドン (遺伝暗号の単位) という。 例えば, UGC のコ ドンの1番目がU, 2番目がG, 3番目がCの配列には, システイン (Cys) が対応する。 64 個のコドンのうち, 3個 (UAA, UAG, UGA) はアミノ酸に対応しておらず, そこで翻訳が しゅう し かいし 終了するため, 終止コドンという。一方, 翻訳の開始には, AUGが対応しており、開始コドンと いう。これは同時にメチオニン (Met) を指定するコドンでもある。 ▼表1 遺伝暗号表 コドンの1番目の塩基 A G UUU UUC UUA UUG CUU CUC CUA CUG AUU AUC AUA AUG GUU GUC GUA GUG U フェニルアラニン (Phe) ロイシン (Leu) ロイシン (Leu) イソロイシン (Ile) 開始コドン メチオニン (Met) バリン (Val) UCU UCC UCA UCG ACU ACC ACA ACG GCU CCU CCC プロリン (Pro) CCA CCG GCC GCA C GCG コドンの2番目の塩基 セリン (Ser) トレオニン (Thr) アラニン (Ala) UAU UAC UAA UAG CAU CAC CAA CAG AAU AAC AAA AAG GAU GAC GAA GAG A チロシン (Tyr) 終止コドン ヒスチジン (His) グルタミン (Gln) アスパラギン (Asn) リシン(リジン) (Lys) アスパラギン酸 (Asp) グルタミン酸 (Glu) UGU U C 終止コドン A UGG トリプトファン (Trp) G UGC UGA CGU CGC CGA CGG AGU AGC AGA AGG GGU GGC G GGA GGG システイン (Cys) アルギニン (Arg) セリン (Ser) アルギニン (Arg) グリシン (Gly) UC A GUC A GUCAG コドンの3番目の塩基

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英語 高校生

過去完了のalwaysは「昔からずっと」という意味だと思っていたのですが、解答では「それまでは」と書いていました。「それまでは」とはつまり「今は違う」ということでしょうか? また過去の出来事でのnowは「その時点を表す」という意味なので「そのとき」と訳せばいいと思っていたの... 続きを読む

1 演習 1 (問題→本冊: p.3) Sally had lived abroad most of her life, but at last she came back to England to live. She had always loved trees and flowers, and now she aimed to buy a small house in the country with a garden. 【全文訳】 サリーは人生の大方の期間, 外国暮らしをしていたが,ついにイギリスで暮 らそうと戻って来た。(それまでは)いつも木と花を愛していて, これから田舎に庭 付きの小さな家を買おうとした。 【解説】 述語動詞は had lived (過去完了), came (過去時制), had loved (過去完了), aimed (過去時制)。 (for) most of her life 「彼女の人生のほとんどの期間」は had lived を修飾, to live は副詞的用法 (目的) 「暮らすために」 で, came back 「戻った」 を修飾。 第2文の後半の now は物語の中などで 「今や, そこで」 の意味。 with a garden は GER house を修飾して 「庭のある家」。 came, aimed の2つの過去時制が 「基準時」 ( 19 課)。

未解決 回答数: 1
生物 高校生

生化学(生物)の問題です。分かるところは解いたのですが模範解答がなく、あっているか不安なので間違っていたら教えて頂きたいです。また、解いていないところは分からなかったので解答を教えてほしいです。大至急お願いしたいです🙇🏻‍♀️

問1 RNAとDNA の違いに関する以下の記述について、正しくないものはどれか? ① RNAの塩基にはウラシルがあるが、 DNAはチミンである。 ② RNAの糖はリボースであるが、 DNAはデオキシリボースである。 ③ RNAには5種類の塩基があるが、 DNAは4種類である。 ④ RNA は1本鎖であるが、 DNAは2本鎖である。 ⑤ RNA は、ヒトの染色体DNAよりも小さい。 問2 翻訳の際に、アダプターとして対応するのは次のうちどの分子か? ① アミノアシルtRNA合成酵素 ② tRNA 3 rRNA ④ mRNA ⑤ リボソーム 問3 転写について正しいものはどれか? ① mRNA のみを合成する。 ② リボソームを必要とする。 ③ tRNA を必要とする。 ④ 5'末端から3'末端へと RNA を合成する。 ⑤ 真核生物の細胞のみでの反応である。 問4 RNA に関する以下の記述のうち、正しくないものはどれか? ① mRNAはリボソーム上で作られる。 ② tRNA は翻訳時に使われる。 リボソーム ③ rRNA は翻訳時に使われる。 ④ すべてのRNA は転写によって作られる。 ⑤ mRNA tRNA、 rRNA のすべては、DNAを鋳型としている。 問55'-AUGAAAUCCUAG-3' という配列のmRNAがある。 鋳型DNAの配列はどれか? ①5'-TACTTTAGGATC-3' ② 5'-ATGAAATCCTAG-3' 3 5'-GATCCTAAAGTA-3' 4 5'-TACAAATCCTAG-3' ⑤ 5'-CTAGGATTTCAT-3'

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英語 高校生

間違ってるとこあったら教えてください

英語 6 次のグラフ及び英文を読み、1から3の質問の答えとして最も適当なものを,それぞれ①~④ 23 のうちから一つずつ選びなさい。 解答番号は Not very familiar 18% Somewhat familiar 25% Not familiar 7% 21 Survey on Esports - 7 - Very familiar 50% Kazuhiro's dream is to be a professional esports player in the future. Esports stands for electronic sports. It is a form of video game competition. Sometimes tournaments for money are held and many people watch them online. Kazuhiro's friends introduced him to esports a few years ago, and he quickly became one of the best players among his friends. He has also participated in many local esports tournaments with them, and their team always won first or second place. Because of this experience, he started thinking of becoming a professional esports player. In one of his classes, Kazuhiro had to make a newsletter for his assignment. He decided to do a survey on esports. He found that some of his classmates were not familiar with esports. So, he thought he would try promoting it in his high school. He held an esports event for his classmates at school. He was not sure whether anyone would come to this event, but to his surprise, many students attended and enjoyed his workshop. He showed them some of the most famous video games in esports. He also gave them some advice on how to win. Finally, he did a live esports demonstration and played against a friend in another country. After this, a lot of his classmates asked Kazuhiro about esports. He felt pleased and satisfied with what he did. Now, he not only wants to be a professional esports player, but also be a person who can promote it. Through esports, he has been able to make friends all over the world, and he wants to spread the joy to other people. 2023KN1A-14-008 1 According to the pie chart, which of the following is true? 0 Less than 50% of the students are familiar with esports. 2 More than 90% of the students are not familiar with esports. 3 Twenty-five percent of the students are not familiar at all with esports. 4 Seventy-five percent of the students are familiar with esports. 2 According to the passage, which of the following is true about Kazuhiro? He wants to be a professional esports player. He wants to create a new video game in esports. He has a negative image of esports. 4 He has already won a lot of money from playing esports. 2 3 3 According to the passage, which of the following is true about Kazuhiro? He got confused when his friends asked him questions about esports. 2 He held an event to teach his classmates about esports at his school. 3 He was disappointed because not many people came to his workshop. 4 He learned about a professional esports player from his classmates. - 8 21 英語 22 23 2023KN1A-14-00

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英語 高校生

間違ってるとこあったら教えてください

英語 7 次の英文を読み、1から4の ちから一つずつ選びなさい。 解答番号は 内に入れるのに最も適当なものを,それぞれ①~④のう 27 O others. 24 Nagisa was a nurse who was working in Zimbabwe, a country in Africa. One day, she got an email from her old high school homeroom teacher, Mr. Tamai. He wanted to ask was hesitant at first because she always had a fear of public speaking, she felt this would be a Nagisa to give his students a talk about what she was doing in Zimbabwe. Although Nagisa good chance to tell students about the joy of working abroad and helping people in need. The next time Nagisa went back to Japan, she visited Mr. Tamai's high school to speak with his students. She was very nervous, but to her relief, the students seemed to be very interested in her story. She talked about her job, her reasons for working in Zimbabwe, and both some good and bad things about working there. She shared her passion for helping After the talk, one of the students came to talk to Nagisa. He said, "I would like to work abroad and help people in the future like you, but I don't know what kind of job I would be able to do. Do you have any advice for me?" Nagisa said, "I think, doing something you like is the key. Keep doing it, and doors will open for you." (Ten years later) One sunny day, a group of Japanese farmers visited the village where Nagisa was living. They came to teach local people how to grow plants and vegetables. People in the village were eager to learn from them. Then, the youngest member of the farmers' group came to talk to Nagisa and said, "Hi, do you remember me? You gave a talk at my school ten years. ago. At that time, I liked growing plants and vegetables, but I didn't know how to use that to help others. You told me to keep doing what I liked and that has really opened doors for me to do what I'm doing now. Thank you." Hearing his words, Nagisa recognized who the young man was. She was surprised and pleased that her talk from ten years before was able to make a difference in this young man's life. 1 Nagisa was 24 a high school teacher. 2 afraid of public speaking. 3 scared of living abroad. 4 a doctor in Zimbabwe. 4 2 One thing Nagisa told Mr. Tamai's students was why she chose to work in Zimbabwe. how she learned a new language. 3 when she went to a high school in Africa. 4 what she did to impress local people. 3 One of the students said he wanted G (2) (3 to be a kind nurse like Nagisa. to teach Japanese culture in Africa. to open doors for other people. to help people overseas. 26 3 25 4 Ten years after her talk, Nagisa 27 made an appointment to meet one of her old friends in Africa. 2 became a farmer and taught local people how to grow vegetables. met one of Mr. Tamai's students again. 4 4 gave a small talk in her high school again.

未解決 回答数: 1