[DSE生物2018］Bio討論區

[url]個學校名搞到我有d不安 [/url]

簡單啲諗，extensor係一舊一收縮就會令你肢體伸直(extend)嘅肌肉；flexor係一舊一收縮就會令你肢體屈曲(flex)嘅肌肉。Bicep姐係二頭肌，拗手瓜果陣谷起果舊，係flexor嘅一種。Tricep姐係三頭肌，你舉高手就係靠佢嘅contraction係extensor嘅一種。做多啲呢類pastpaper吧。

*舉高之餘仲要伸直，唔係hea舉

依家應唔應該揀啲大熱topic重做ce/al by topic?
定係重做dse

做DSE卷，唔識就睇返書學返

重問

pupil嘅constriction係reflex action controlled by medulla oblongata，唔involve cerebrum的
(好似係)

想知5想上5星 個分別係邊？
溫哂書，做哂dse， ce by topic mc 但無睇過AL既話，淨低呢幾日係咪寧願做多次Dse就算？完全唔知做咩先可以進步。。

我係啊sir份notes都見過呢句，不過wiki就話大部分意見都指出唔太prevent implantation。
你強行用pure logic諗點解prevent implantation，可以咁諗：↑progesterone leads to inhibition of LH secretion, which then leads to yellow body degeneration, which then leads to lower progesterone (& estrogen), which then leads to breakdown of uterine lining. Thus cannot have implantation.

熟DSE先，係咪真係做就自己選擇。我自己會節省時間，諗完之後即刻望marking睇下自己啱唔啱

同埋NOS個到應該係背左啲statement 先？呢個就係5上5星既分水嶺？

我就係retaker黎 冇sba

可以背，因為唔多，但背NOS statement係其次，反而係要elaborate難，可以睇返DSE pastpapers，佢係有啲keyword要你寫到，例如experiment, observation, creativity...
至於係咪分水嶺，其實唔係，每年考得兩三分，而且又唔係一個大topic

咁都係同樣做法姐，take嗰approximate然後計grade

完全唔明Law of independent assortment個原理係點

Q30
Q到R呢段period，條友都仲inhale緊喎。
Largest volume一定係當條友吸到盡，呼氣前嗰刹那，所以係R

Q18 你不如解釋吓你揀咩

q30 果道我做果時都錯左，之後再諗
inhalation的時候，因為air pressure < 760﹐所以air moves in
但你一邊加大thoracic cavity﹐air一邊入
呢個process應該去到pressure=760 就停
所以臨呼氣前一刻，vol of lung應該去到maximum

B

2nd law好似out syl左

有條pastpaper marking提過兩個gene要located on different chromosome﹐先可以independent assort
因為gene A的genotype 唔影響gene B的genotype
所以各有各諗

如果located on同一chromosome﹐當佢一個gene去諗(first law)
(如果唔計crossinv over)

1st meiotic cell division係separation of homologous chromosome喎，依家幅圖係separation of chromatids
其實如果你睇清楚題目嘅話應該就識做，依個cell係egg cell

係喎 thanks