2017 DSE Bio 討論區

Q6 and Q7 ？
成日唔識做呢啲how evidence supports hypothesis

呢d係幾絕望...
好難教。因為關邏輯事，唔係知識事

How abt q6

Q6 and Q7 ？
成日唔識做呢啲how evidence supports hypothesis

呢d係幾絕望...
好難教。因為關邏輯事，唔係知識事

How abt q6

ciliary muscle contract, suspensory ligament slackened, lens thickened when looking at close objects

Q6 and Q7 ？
成日唔識做呢啲how evidence supports hypothesis

呢d係幾絕望...
好難教。因為關邏輯事，唔係知識事

How abt q6

ciliary muscle contract, suspensory ligament slackened, lens thickened when looking at close objects

But he has long sight wor

Q6 and Q7 ？
成日唔識做呢啲how evidence supports hypothesis

呢d係幾絕望...
好難教。因為關邏輯事，唔係知識事

How abt q6

ciliary muscle contract, suspensory ligament slackened, lens thickened when looking at close objects

But he has long sight wor

有long sight 代表佢眼球focus唔啱位 應該唔會影響佢ciliary muscle d reflex

Q6 and Q7 ？
成日唔識做呢啲how evidence supports hypothesis

呢d係幾絕望...
好難教。因為關邏輯事，唔係知識事

How abt q6

ciliary muscle contract, suspensory ligament slackened, lens thickened when looking at close objects

But he has long sight wor

有long sight 代表佢眼球focus唔啱位 應該唔會影響佢ciliary muscle d reflex

But long sight is due to thin lens

呢d係幾絕望...
好難教。因為關邏輯事，唔係知識事

How abt q6

ciliary muscle contract, suspensory ligament slackened, lens thickened when looking at close objects

But he has long sight wor

有long sight 代表佢眼球focus唔啱位 應該唔會影響佢ciliary muscle d reflex

But long sight is due to thin lens

thinner (than normal) lens can still recoil to a thicker shape, it is a comparative sense;
and it is more often caused by shorter-than-normal eyeballs i think

係咪意思即係natural selection同speciation係完全無關係？

唔係，係有關係
但唔係因為natural selection 令到某一species 變成另一種

佢只係令same species 變到更adapted to environment

即係最重要的只係variation同isolation mechanism係咪

Isolate 完果environmental condition一樣都得

假如你講緊speciation，唔係。

咁即係點阿 可唔可以教下speciation個mechanism同flow ？ 我本書寫的同巴打講果啲完全唔同 好亂

Speciation 2015DSE考左(Paper 1B Q10(b))
我上面post左，你睇一睇先。



Answer by HKEAA:
- Separation of continents resulted in isolation of the two groups of ancestors (1)
- Each isolated group was subjected to a different set of environmental conditions (1)
- As a result, the adaptive traits specific to those environmental conditions were selected by natural selection/they evolved differently from each other due to natural selection (1)
- Their genetic compositions/make up became so different that they could no longer interbreed (to produce fertile offsprings). (1)

2015 DSE Paper 1B Q10

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

唔係，係有關係
但唔係因為natural selection 令到某一species 變成另一種

佢只係令same species 變到更adapted to environment

即係最重要的只係variation同isolation mechanism係咪

Isolate 完果environmental condition一樣都得

假如你講緊speciation，唔係。

咁即係點阿 可唔可以教下speciation個mechanism同flow ？ 我本書寫的同巴打講果啲完全唔同 好亂

Speciation 2015DSE考左(Paper 1B Q10(b))
我上面post左，你睇一睇先。



Answer by HKEAA:
- Separation of continents resulted in isolation of the two groups of ancestors (1)
- Each isolated group was subjected to a different set of environmental conditions (1)
- As a result, the adaptive traits specific to those environmental conditions were selected by natural selection/they evolved differently from each other due to natural selection (1)
- Their genetic compositions/make up became so different that they could no longer interbreed (to produce fertile offsprings). (1)

我答到依題阿 但係佢有講natural selection 所以當巴打講話natural selection 同speciation係冇直接關係 只係make better adapted species 的時候好亂

即係最重要的只係variation同isolation mechanism係咪

Isolate 完果environmental condition一樣都得

假如你講緊speciation，唔係。

咁即係點阿 可唔可以教下speciation個mechanism同flow ？ 我本書寫的同巴打講果啲完全唔同 好亂

Speciation 2015DSE考左(Paper 1B Q10(b))
我上面post左，你睇一睇先。



Answer by HKEAA:
- Separation of continents resulted in isolation of the two groups of ancestors (1)
- Each isolated group was subjected to a different set of environmental conditions (1)
- As a result, the adaptive traits specific to those environmental conditions were selected by natural selection/they evolved differently from each other due to natural selection (1)
- Their genetic compositions/make up became so different that they could no longer interbreed (to produce fertile offsprings). (1)

我答到依題阿 但係佢有講natural selection 所以當巴打講話natural selection 同speciation係冇直接關係 只係make better adapted species 的時候好亂

係有關係
但唔係單純因為natural selection <> new species
係因為各自各受唔同既selection pressure 情況

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

Presbyopia 先會lose elascity of lens

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

pretty sure the physiological responses of ciliary muscles and lens are the same in long-sightedness and short-sightedness

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

pretty sure the physiological responses of ciliary muscles and lens are the same in long-sightedness and short-sightedness

即係一樣會thinner , but not as thin as normal ppl?

Isolate 完果environmental condition一樣都得

假如你講緊speciation，唔係。

咁即係點阿 可唔可以教下speciation個mechanism同flow ？ 我本書寫的同巴打講果啲完全唔同 好亂

Speciation 2015DSE考左(Paper 1B Q10(b))
我上面post左，你睇一睇先。



Answer by HKEAA:
- Separation of continents resulted in isolation of the two groups of ancestors (1)
- Each isolated group was subjected to a different set of environmental conditions (1)
- As a result, the adaptive traits specific to those environmental conditions were selected by natural selection/they evolved differently from each other due to natural selection (1)
- Their genetic compositions/make up became so different that they could no longer interbreed (to produce fertile offsprings). (1)

我答到依題阿 但係佢有講natural selection 所以當巴打講話natural selection 同speciation係冇直接關係 只係make better adapted species 的時候好亂

係有關係
但唔係單純因為natural selection <> new species
係因為各自各受唔同既selection pressure 情況

Natural selection 點都有
但令到new species 係個source of selection pressure 唔同

Natural selection 只係令生物better adapted

呢個邏輯黎，要搞清楚

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

pretty sure the physiological responses of ciliary muscles and lens are the same in long-sightedness and short-sightedness

即係一樣會thinner , but not as thin as normal ppl?

as long as the ciliary muscles are not completely dysfuntional, i guess yes
and myopia has so many different causes dse won't ask sth like this la lol

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

pretty sure the physiological responses of ciliary muscles and lens are the same in long-sightedness and short-sightedness

即係一樣會thinner , but not as thin as normal ppl?

as long as the ciliary muscles are not completely dysfunctioned, i guess yes
and myopia has so many different causes dse won't ask sth like this la lol

Isolate 完果environmental condition一樣都得

假如你講緊speciation，唔係。

咁即係點阿 可唔可以教下speciation個mechanism同flow ？ 我本書寫的同巴打講果啲完全唔同 好亂

Speciation 2015DSE考左(Paper 1B Q10(b))
我上面post左，你睇一睇先。



Answer by HKEAA:
- Separation of continents resulted in isolation of the two groups of ancestors (1)
- Each isolated group was subjected to a different set of environmental conditions (1)
- As a result, the adaptive traits specific to those environmental conditions were selected by natural selection/they evolved differently from each other due to natural selection (1)
- Their genetic compositions/make up became so different that they could no longer interbreed (to produce fertile offsprings). (1)

我答到依題阿 但係佢有講natural selection 所以當巴打講話natural selection 同speciation係冇直接關係 只係make better adapted species 的時候好亂

係有關係
但唔係單純因為natural selection <> new species
係因為各自各受唔同既selection pressure 情況

Natural selection 點都有
但令到new species 係個source of selection pressure 唔同

Natural selection 只係令生物better adapted

呢個邏輯黎，要搞清楚

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

pretty sure the physiological responses of ciliary muscles and lens are the same in long-sightedness and short-sightedness

即係一樣會thinner , but not as thin as normal ppl?

as long as the ciliary muscles are not completely dysfunctioned, i guess yes
and myopia has so many different causes dse won't ask sth like this la lol

Thanks gay bb
Love u
Rmb me? That's on9 person asking Down syndrome lol

假如你講緊speciation，唔係。

咁即係點阿 可唔可以教下speciation個mechanism同flow ？ 我本書寫的同巴打講果啲完全唔同 好亂

Speciation 2015DSE考左(Paper 1B Q10(b))
我上面post左，你睇一睇先。



Answer by HKEAA:
- Separation of continents resulted in isolation of the two groups of ancestors (1)
- Each isolated group was subjected to a different set of environmental conditions (1)
- As a result, the adaptive traits specific to those environmental conditions were selected by natural selection/they evolved differently from each other due to natural selection (1)
- Their genetic compositions/make up became so different that they could no longer interbreed (to produce fertile offsprings). (1)

我答到依題阿 但係佢有講natural selection 所以當巴打講話natural selection 同speciation係冇直接關係 只係make better adapted species 的時候好亂

係有關係
但唔係單純因為natural selection <> new species
係因為各自各受唔同既selection pressure 情況

Natural selection 點都有
但令到new species 係個source of selection pressure 唔同

Natural selection 只係令生物better adapted

呢個邏輯黎，要搞清楚

咁係咪即係有natural selection，先有speciation？ 咁recall翻我條問題，(1)唔係岩咩

Which of the following are necessary for speciation?

(1) the competition within a species
(2) the existence of variation within a species
(3) different populations of a species being isolated for a long time

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

pretty sure the physiological responses of ciliary muscles and lens are the same in long-sightedness and short-sightedness

即係一樣會thinner , but not as thin as normal ppl?

as long as the ciliary muscles are not completely dysfunctioned, i guess yes
and myopia has so many different causes dse won't ask sth like this la lol

Thanks gay bb
Love u
Rmb me? That's on9 person asking Down syndrome lol

of coz lol i'm so bored
don't wanna revise
that's why i here

咁唔差在問埋

Short sighted 既人a pair of antagonistic muscle in cillary is under prolonged contraction
-> loses the flexibility

咁short sighted 既人睇遠野，will lens become thinner ?

pretty sure the physiological responses of ciliary muscles and lens are the same in long-sightedness and short-sightedness

即係一樣會thinner , but not as thin as normal ppl?

as long as the ciliary muscles are not completely dysfunctioned, i guess yes
and myopia has so many different causes dse won't ask sth like this la lol

Thanks gay bb
Love u
Rmb me? That's on9 person asking Down syndrome lol

of coz lol i'm so bored
don't wanna revise
that's why i here

Can u leave telegram ?
想瘋狂問你😍