2017 DSE Bio 討論區(2)

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

Myelin sheath包住nerve fibres
你用「入面」呢個形容有啲奇怪

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

DNA RNA 轉錄 轉譯果課 係用黎做咩？
我背曬啲步驟但題目一出我完全唔知佢問緊呢課
e.g. 2014 Q6

留意footnote detailed步驟outsyl

Why the ans is D?
咩叫Pushed towards the tip

Pushed towards the tip咪字面意思咁解
你唔明邊到?

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

Myelin sheath包住nerve fibres
你用「入面」呢個形容有啲奇怪

主要係white matter到

DNA RNA 轉錄 轉譯果課 係用黎做咩？
我背曬啲步驟但題目一出我完全唔知佢問緊呢課
e.g. 2014 Q6

製造蛋白質lo

但2014 q6係講基因喎

DNA RNA 轉錄 轉譯果課 係用黎做咩？
我背曬啲步驟但題目一出我完全唔知佢問緊呢課
e.g. 2014 Q6

製造蛋白質lo

但2014 q6係講基因喎

During exercise more heat is generated is due to increased muscle contraction consumes more ATP so more heat lost or the rate of respiration is higher in muscle cell so more heat lost ?

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

DNA RNA 轉錄 轉譯果課 係用黎做咩？
我背曬啲步驟但題目一出我完全唔知佢問緊呢課
e.g. 2014 Q6

留意footnote detailed步驟outsyl

sorry 我中文Bio
睇唔明

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

我係話包 cell bodies

我指grey matter一樣有myelin sheath and cell bodies
但點解會grey因為相對多cell bodies

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

我係話包 cell bodies

我指grey matter一樣有myelin sheath and cell bodies
但點解會grey因為相對多cell bodies

Grey matters包cell bodies

During exercise more heat is generated is due to increased muscle contraction consumes more ATP so more heat lost or the rate of respiration is higher in muscle cell so more heat lost ?

more heat lost同more heat generated唔同意思，你指邊個?

DNA RNA 轉錄 轉譯果課 係用黎做咩？
我背曬啲步驟但題目一出我完全唔知佢問緊呢課
e.g. 2014 Q6

留意footnote detailed步驟outsyl

sorry 我中文Bio
睇唔明

轉錄同轉譯啲詳細步驟唔會考

DNA RNA 轉錄 轉譯果課 係用黎做咩？
我背曬啲步驟但題目一出我完全唔知佢問緊呢課
e.g. 2014 Q6

製造蛋白質lo

但2014 q6係講基因喎

你點理解到係基因

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

我係話包 cell bodies

我指grey matter一樣有myelin sheath and cell bodies
但點解會grey因為相對多cell bodies

Grey matters包cell bodies

正正係white matter多myelin sheath先顯得“white”

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

我係話包 cell bodies

我指grey matter一樣有myelin sheath and cell bodies
但點解會grey因為相對多cell bodies

Grey matters包cell bodies

唔係架，DSE入面grey matter consists of cell bodies，white matters consists of nerve fibres。

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

我係話包 cell bodies

我指grey matter一樣有myelin sheath and cell bodies
但點解會grey因為相對多cell bodies

Grey matters包cell bodies

唔係架，DSE入面grey matter consists of cell bodies，white matters consists of nerve fibres。

Oic..
但其實唔合理。
因為spinal cord grey matter

Eg withdrawl reflex
Where axon terminal of sensory neurone - interneurone - motor neurone connected

The myelinated axon terminal of sensory neurone x dendrite of dendron of interneurone

所以，我都唔知syll想點

White matter 就真係只得nerve fibre and myelinated axon , 無cell bodies

但grey matter: where cell bodies positioned ，點都有axon 跟住，好難完全割捨

Why the ans is D?
咩叫Pushed towards the tip

Pushed towards the tip咪字面意思咁解
你唔明邊到?

點解唔係push towards the region of elongation？

DNA RNA 轉錄 轉譯果課 係用黎做咩？
我背曬啲步驟但題目一出我完全唔知佢問緊呢課
e.g. 2014 Q6

製造蛋白質lo

但2014 q6係講基因喎

你點理解到係基因

其實基因表達過程DSE就係得兩步，轉譯同轉錄
都呢個時候你記左佢啦

DNA RNA 轉錄 轉譯果課 係用黎做咩？
我背曬啲步驟但題目一出我完全唔知佢問緊呢課
e.g. 2014 Q6

留意footnote detailed步驟outsyl

sorry 我中文Bio
睇唔明

轉錄同轉譯啲詳細步驟唔會考

啫係淨係要知DNA--> transcript = mRNA---->translation= Protein??

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

我係話包 cell bodies

我指grey matter一樣有myelin sheath and cell bodies
但點解會grey因為相對多cell bodies

Grey matters包cell bodies

唔係架，DSE入面grey matter consists of cell bodies，white matters consists of nerve fibres。

Oic..
但其實唔合理。
因為spinal cord grey matter

Eg withdrawl reflex
Where axon terminal of sensory neurone - interneurone - motor neurone connected

The myelinated axon terminal of sensory neurone x dendrite of dendron of interneurone

所以，我都唔知syll想點

你搞清楚先：
Spinal cord係有grey matter，冇錯，但係亦有white matter。同我講嘅野有衝突咩？
grey matter consists of cell bodies，white matters consists of nerve fibres
而Myelination只會發生係nerve fibres，cell bodies冇myelination。
DSE就係咁簡單。

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

我係話包 cell bodies

我指grey matter一樣有myelin sheath and cell bodies
但點解會grey因為相對多cell bodies

Grey matters包cell bodies

唔係架，DSE入面grey matter consists of cell bodies，white matters consists of nerve fibres。

Oic..
但其實唔合理。
因為spinal cord grey matter

Eg withdrawl reflex
Where axon terminal of sensory neurone - interneurone - motor neurone connected

The myelinated axon terminal of sensory neurone x dendrite of dendron of interneurone

所以，我都唔知syll想點

你搞清楚先：
Spinal cord係有grey matter，冇錯，但係亦有white matter。同我講嘅野有衝突咩？
grey matter consists of cell bodies，white matters consists of nerve fibres
而Myelination只會發生係nerve fibres，cell bodies冇myelination。
DSE就係咁簡單。

無衝突
我都無話myelination in cell bodies

我只係話grey matters 同時有cell bodies and myelinated axon 而已

Myelinated nerve 喺係grey matter 定white matter入面?or depend on neurons?

兩者都有
睇density (cell bodies vs myelinated axon)

又係outsyl，DSE myelination唔包cell body，現實都好少講包cell body。

Myelin sheath包nerve fibres嘅作用係：
- insulate the nerve fibres to prevent transmission of nerve impulses to the surroundings.
- speed up transmission of nerve impulses

我係話包 cell bodies

我指grey matter一樣有myelin sheath and cell bodies
但點解會grey因為相對多cell bodies

Grey matters包cell bodies

唔係架，DSE入面grey matter consists of cell bodies，white matters consists of nerve fibres。

Oic..
但其實唔合理。
因為spinal cord grey matter

Eg withdrawl reflex
Where axon terminal of sensory neurone - interneurone - motor neurone connected

The myelinated axon terminal of sensory neurone x dendrite of dendron of interneurone

所以，我都唔知syll想點

我就係唔明嚟樣，成條interneuron 係grey matter入面有，而佢又有myelinated nerve