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生物 大学生・専門学校生・社会人

至急お願いいたします🚨 生物の質問です。 ミトコンドリアの経路についての説明だと思うのですが、電子オーバーフローモデルと電子分布モデルの違いを教えていただきたいです。 また、どういう仕組みなのか、何故このように電子が流れるのかも教えていただきたいです。 UQ poolはユ... 続きを読む

(A) Electron overflow model (considered out-of-date) Alt UQ pool Alternative oxidase inactive. Alt No alternative pathway activity Cytochrome pathway unsaturated Cyt (B) Electron distribution model (reflects current thinking) UQ pool Cyt Alternative pathway active Cytochrome pathway saturated Alt Alternative oxidase active Alt UQ pool Cyt Cyt Figure 14.33 Two models for regulation of electron flow through the alternative oxidase. (A) In the electron overflow model, no appreciable electron transfer through the alternative pathway takes place until electron flow through the cytochrome pathway is at or near satu- ration. This could result from the effects of respirato- ry control, if the rate of mitochondrial ATP produc- tion exceeds its rate of utilization in the cytosol, or from some externally imposed stress, such as low temperature. Under such circumstances, the UQ pool becomes sufficiently reduced to allow electrons to flow through the alternative oxidase, the latter re- quiring that the UQ pool be 40% to 60% reduced to attain significant activity. (B) In the electron distribu- tion model, the alternative and cytochrome path- ways both show significant activity at low levels of UQ pool reduction, and electrons are distributed be- tween the two pathways on the basis of the relative activities of each pathway. The activity of the alter- native oxidase under these circumstances is thought to be regulated by the action of a-keto acids and by reduction/oxidation of the intermolecular disulfide bond, as well as by additional regulatory mecha- nisms not yet characterized.

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英語 高校生

添削をお願いしたいです!(画像が送りきれないので回答者の方が返信したら追加で送ります) 自分の解答↓ 短い時間、レンジで加熱すると心臓病のリスクを下げるフラボノイドを増加させることができるが、長い時間加熱したり多すぎる水の中で加熱するとむしろフラボノイドは低下してしまう。た... 続きを読む

一般に,電子レンジでの調理は,他の調理法に比べると栄養素 16 の保持には好ましいとされるが,調理時間が長かったり、多量の 水を使って調理したりするとブロッコリーでは心疾患のリスクを減らす フラボノイド類が減少するという報告がある。 ただ、食材によって栄養保 持の結果はさまざまであり,統一見解はない。電子レンジ調理にプラスチ ック容器を使うと, 可塑剤のフタラートなどの化学物質が溶け出すが, こうした物質は微量であってもホルモンや代謝系を乱すほか、 生殖問題や ぜんそく, ADHD との関連性など,さまざまな悪影響を及ぼすことが指 摘されている。また, 高温になる電子レンジでの加熱で分子の結合が変わ り,新たな高エネルギーの分子が作り出される。 これがDNA と反応し て突然変異を引き起こすとされており, ジャガイモを電子レンジ加熱した ことで,発がん物質として働くアクリルアミドが生成した例が報告されて いる。(400字以内)発 当 解答編

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英語 高校生

解いたのがあっているか教えて欲しいです。

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未解決 回答数: 1
英語 高校生

答えないです。軽く根拠と答え教えていただきたいです。

1 ()内に入る最も適切な語句を①~④から選びなさい。 (1) As far as I know, there are ( each 2 few (2) In developing countries, there are still a lot of villages with no 1 run 3 running ran (3) I didn't like the movie. It was not as ( 1 excited 2 exciting (4) I was so ( 1 disappoint (6) The company is planning a trip ( ) studies on the history of the region. 3 little ) when I heard the news 2 disappointed 3 disappointing and grolle Halid (5) Our office will not accept responsibility for items lost or ( 1 steal 2 stealing 3 stealth to go to swimming going swim (8) My sister ( 1 likes (7) Can I borrow something 1 to write (10) The student ( 1 what ) as I had expected. 3 excite (9) The singer is very talented and is sure 1 to win 2 won juo beatio )? I don't have a pen. 2 to write for (14) One reason 1 which (11) To my surprise, Paul gave me all the books ( 1 of 2 of which ) at a beautiful beach in Okinawa. 3 going to swimming CHE 3 to write with mundo ) the singing contest. ) he had. 3 that (13) Barcelona is the city () I spent last summer. 11 those 2 where 4 much lood a hell ) water. to pass the exam, for she spent a lot of time preparing for it. 2 is liking 3 likely nulol 3 which 4 have run Bürostuler e'an enw triguor (#****** to disappoint excitement Svi no es mob amse salt sven 4 stolen J - 4 what (12) There are only a few places around this area for children to play, (x) is 1 that 2 what 3 where E 4 is likely (東京電機大) idquodi L 4 to go swimming arbonogeek(岐阜聖徳学園大) 4 to write on COPY winning 4 3 for winning MAZSPRODAT ) had a temperature has gone to the nurse's room. lir)) (f (神戸松蔭女子学院大) 2 who 3 whom 4 whose VYSTIM 4 while is really a problem. 4 which (名城大) (日本大) 東京電機大) as C ESPERIEN (松山大) Kenji likes that class is that it is directly related to his dream for the future. 2 when na we 13 where ignoolew\ iady Soa 2 下線部のうち, 誤った英語表現を含むものを1つ選びなさい。 (福岡大) (甲南大) (S) ( 愛知学院大 ) og a spelliver to teriqeorts sil フェリス女学院大) 4 why X (1) Students who choose to 2 major in one of the Liberal Arts disciplines 3 will take courses 4 designing to foster independent thinking. (東北医科薬科大) (2) 1 After serving in the military, the man went back to his native village, 2 which he lived 3 among his Dk. \ ei, childhood friends 4 until he died. her family. (京都外国語大) (2 (2 (3) (5) (6) B D

未解決 回答数: 1
数学 高校生

赤く丸をしたbの問題で解答の方に二階微分した後の式がなぜ(-1/4)(-1/4)(H-27)になるのか分かりません。教えてください🙇‍♀️

QA At time t = 0, a boiled potato is taken from a pot on a stove and left to cool in a kitchen. The internal temperature of the potato is 91 degrees Celsius (°C) at time t = 0, and the internal temperature of the potato is greater than 27°C for all times t > 0. The internal temperature of the potato at time t minutes can be modeled by the function H that satisfies the differential equation dH (H- (H-27), where H(t) is dt measured in degrees Celsius and H(0) = 91. (a) Write an equation for the line tangent to the graph of Hat t = 0. Use this equation to approximate the internal temperature of the potato at time t = 3. (b) Use 2017 APⓇ CALCULUS AB FREE-RESPONSE QUESTIONS (a) dH d²H dt² to determine whether your answer in part (a) is an underestimate or an overestimate of the internal temperature of the potato at time t = 3. (c) For t < 10, an alternate model for the internal temperature of the potato at time 7 minutes is the function -= − (G - 27)²/3, where G(t) is measured in degrees Celsius dG G that satisfies the differential equation dt and G(0) = 91. Find an expression for G(t). Based on this model, what is the internal temperature of the potato at time t = 3 ? 564 at (21-27) - == 2-16 To = - = (H(3)-27) 4 -64 = HB)-27 -37 = H (3) (b) _d²fi © 2017 The College Board. Visit the College Board on the Web: www.collegeboard.org. GO ON TO THE NEXT P

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