2017 DSE Bio 討論區

Practice Paper MC Q22

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

Ans:(2)(3)


點解1錯？ 唔該哂

Speciation 意思「物種產生既過程」

2/3 你知，所以唔解

1: refer to infraspecific competition
- 因為種內間競爭，species less adapted to the competition 會拎得更少食物
- smaller chance of survival =/= speciation

唔係natural selection咩 select variations that are better adapted to the environment

唔係
有natural selection =/= speciation
Like 白班/黑班 butterfly in industrial revolution

Natural selection 係會令生物more adapted to the environment =/= a new species

Natural selection唔係係speication中需要咩 我睇書係咁講

個d 係already new species to become more adapted to the present environment

Same species but with different degree of phenotypic advantages

顛覆哂我學過成課evoultion的認知 乜唔係isolated-> selection -> different variations survive -> inherit -> accumulate -> x breed -> species 嫁咩 好亂阿

Practice Paper MC Q22

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

Ans:(2)(3)


點解1錯？ 唔該哂

Speciation 意思「物種產生既過程」

2/3 你知，所以唔解

1: refer to infraspecific competition
- 因為種內間競爭，species less adapted to the competition 會拎得更少食物
- smaller chance of survival =/= speciation

唔係natural selection咩 select variations that are better adapted to the environment

唔係
有natural selection =/= speciation
Like 白班/黑班 butterfly in industrial revolution

Natural selection 係會令生物more adapted to the environment =/= a new species

Natural selection唔係係speication中需要咩 我睇書係咁講

個d 係already new species to become more adapted to the present environment

Same species but with different degree of phenotypic advantages

顛覆哂我學過成課evoultion的認知 乜唔係isolated-> selection -> different variations survive -> inherit -> accumulate -> x breed -> species 嫁咩 好亂阿

你第一步答左自己
邏輯上
先：有isolation <> no interbreeding <> new species
後 : new species <> natural selection <> better new species

Natural selection 「唔會」令到有variation

Speciation 意思「物種產生既過程」

2/3 你知，所以唔解

1: refer to infraspecific competition
- 因為種內間競爭，species less adapted to the competition 會拎得更少食物
- smaller chance of survival =/= speciation

唔係natural selection咩 select variations that are better adapted to the environment

唔係
有natural selection =/= speciation
Like 白班/黑班 butterfly in industrial revolution

Natural selection 係會令生物more adapted to the environment =/= a new species

Natural selection唔係係speication中需要咩 我睇書係咁講

個d 係already new species to become more adapted to the present environment

Same species but with different degree of phenotypic advantages

顛覆哂我學過成課evoultion的認知 乜唔係isolated-> selection -> different variations survive -> inherit -> accumulate -> x breed -> species 嫁咩 好亂阿

你第一步答左自己
邏輯上
先：有isolation <> no interbreeding <> new species
後 : new species <> natural selection <> better new species

Natural selection 「唔會」令到有variation

你應該將mutation/ natural selection 個概念搞混左

Practice Paper MC Q22

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

Ans:(2)(3)


點解1錯？ 唔該哂

Speciation 意思「物種產生既過程」

2/3 你知，所以唔解

1: refer to infraspecific competition
- 因為種內間競爭，species less adapted to the competition 會拎得更少食物
- smaller chance of survival =/= speciation

唔係natural selection咩 select variations that are better adapted to the environment

唔係
有natural selection =/= speciation
Like 白班/黑班 butterfly in industrial revolution

Natural selection 係會令生物more adapted to the environment =/= a new species

Natural selection唔係係speication中需要咩 我睇書係咁講

個d 係already new species to become more adapted to the present environment

Same species but with different degree of phenotypic advantages

顛覆哂我學過成課evoultion的認知 乜唔係isolated-> selection -> different variations survive -> inherit -> accumulate -> x breed -> species 嫁咩 好亂阿

完全唔係 我可以晏啲講下 依家唔得閒
或者其他巴打講下

儘左力答你
希望你明

想問點解會知道個女人係大左肚？

ANS:B

energy requirement 明顯地高咗供給胎兒生長?

以Energy requirement 嚟推既話 Labour worker都得喎

幅圖可以咁樣睇：
1：energy 要多咗
2：鈣同維他命d都要多咗
其他都唔係有太大轉變

至於ans
A:無必要多啲2
C:無必要多啲1
D:無記錯係缺乏protein既disease，咁啫唔係好關事

而且

BB一路成長係要energy(growth and development)同埋鈣(例如form bone)

所以佢係最合理既答案

儘左力答你
希望你明

理解緊 thanks巴打

想問點解會知道個女人係大左肚？

ANS:B

energy requirement 明顯地高咗供給胎兒生長?

以Energy requirement 嚟推既話 Labour worker都得喎

幅圖可以咁樣睇：
1：energy 要多咗
2：鈣同維他命d都要多咗
其他都唔係有太大轉變

至於ans
A:無必要多啲2
C:無必要多啲1
D:無記錯係缺乏protein既disease，咁啫唔係好關事

而且

BB一路成長係要energy(growth and development)同埋鈣(例如form bone)

所以佢係最合理既答案

A有必要2， 因為labour
-> protein synthesis necessary to generate greater force

反而係A唔必要要vitamin D and calcium
雖則我諗唔明點解唔必要

求解釋Q11 13 21 23 34

Speciation 意思「物種產生既過程」

2/3 你知，所以唔解

1: refer to infraspecific competition
- 因為種內間競爭，species less adapted to the competition 會拎得更少食物
- smaller chance of survival =/= speciation

唔係natural selection咩 select variations that are better adapted to the environment

唔係
有natural selection =/= speciation
Like 白班/黑班 butterfly in industrial revolution

Natural selection 係會令生物more adapted to the environment =/= a new species

Natural selection唔係係speication中需要咩 我睇書係咁講

個d 係already new species to become more adapted to the present environment

Same species but with different degree of phenotypic advantages

顛覆哂我學過成課evoultion的認知 乜唔係isolated-> selection -> different variations survive -> inherit -> accumulate -> x breed -> species 嫁咩 好亂阿

完全唔係 我可以晏啲講下 依家唔得閒
或者其他巴打講下

儘左力答你
希望你明

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

儘左力答你
希望你明

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

儘左力答你
希望你明

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

求解釋Q11 13 21 23 34

其實q11
raw material is like Chem reactant

Starch from Glucose
Glucose from PGAL (tri-phosphate) rxn

可能佢想屈你機：
Tri-phosphate formation requires NADPH from photolysis of water gwa

儘左力答你
希望你明

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

求解釋Q11 13 21 23 34

其實q11
raw material is like Chem reactant

Starch from Glucose
Glucose from PGAL (tri-phosphate) rxn

可能佢想屈你機：
Tri-phosphate formation requires NADPH from photolysis of water gwa

所以我個人唔buy佢呢種間接出題

因為starch raw material is glucose not PGAL

無PGAL 唔會一定無starch
as long as there is still glucose, starch will be formed by condensation polymerisation

但無glucose 就一定無starch

儘左力答你
希望你明

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

Isolate 左，重點係無interbreeding ，所以無exchange of genetic materials


Environmental conditions 係另一回事，唔重要。

儘左力答你
希望你明

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

Isolate 左，重點係無interbreeding ，所以無exchange of genetic materials


Environmental conditions 係另一回事，唔重要。

唔該哂巴打

想問點解會知道個女人係大左肚？

ANS:B

energy requirement 明顯地高咗供給胎兒生長?

以Energy requirement 嚟推既話 Labour worker都得喎

幅圖可以咁樣睇：
1：energy 要多咗
2：鈣同維他命d都要多咗
其他都唔係有太大轉變

至於ans
A:無必要多啲2
C:無必要多啲1
D:無記錯係缺乏protein既disease，咁啫唔係好關事

而且

BB一路成長係要energy(growth and development)同埋鈣(例如form bone)

所以佢係最合理既答案

A有必要2， 因為labour
-> protein synthesis necessary to generate greater force

反而係A唔必要要vitamin D and calcium
雖則我諗唔明點解唔必要

我既1，2唔係問題入面既1,2

Btw workers理論上已經唔會再點發育，咁大量既vitamin D and calcium intake係無幫助

想問點解會知道個女人係大左肚？

ANS:B

energy requirement 明顯地高咗供給胎兒生長?

以Energy requirement 嚟推既話 Labour worker都得喎

幅圖可以咁樣睇：
1：energy 要多咗
2：鈣同維他命d都要多咗
其他都唔係有太大轉變

至於ans
A:無必要多啲2
C:無必要多啲1
D:無記錯係缺乏protein既disease，咁啫唔係好關事

而且

BB一路成長係要energy(growth and development)同埋鈣(例如form bone)

所以佢係最合理既答案

A有必要2， 因為labour
-> protein synthesis necessary to generate greater force

反而係A唔必要要vitamin D and calcium
雖則我諗唔明點解唔必要

我既1，2唔係問題入面既1,2

Btw workers理論上已經唔會再點發育，咁大量既vitamin D and calcium intake係無幫助

Thanks!
最尾個句學到野

求解釋Q11 13 21 23 34

其實q11
raw material is like Chem reactant

Starch from Glucose
Glucose from PGAL (tri-phosphate) rxn

可能佢想屈你機：
Tri-phosphate formation requires NADPH from photolysis of water gwa

所以我個人唔buy佢呢種間接出題

因為starch raw material is glucose not PGAL

無PGAL 唔會一定無starch
as long as there is still glucose, starch will be formed by condensation polymerisation

但無glucose 就一定無starch

其實NADPH，個N咪係soil到拎
無必要諗到咁複雜

求解釋Q11 13 21 23 34

其實q11
raw material is like Chem reactant

Starch from Glucose
Glucose from PGAL (tri-phosphate) rxn

可能佢想屈你機：
Tri-phosphate formation requires NADPH from photolysis of water gwa

所以我個人唔buy佢呢種間接出題

因為starch raw material is glucose not PGAL

無PGAL 唔會一定無starch
as long as there is still glucose, starch will be formed by condensation polymerisation

但無glucose 就一定無starch

其實NADPH，個N咪係soil到拎
無必要諗到咁複雜

我反而係諗d 水係因為from soil lol😂
因為咁先解釋到O2 is from soil , 因為water from soil 😂

因為我地唔expect 知NAD係一舊有N既cpd...

唔係你講我都唔知NAD個N for nicotine ..

麻煩幫忙解答其他題

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