bab 3: Pergerakan bahan merentas membran plasma

Rajah 1 menunjukkan suatu sel tumbuhan dalam air suling.

Diagram 1 shows a plant cell in distilled water.

Apakah proses P?

What is process P?

• Osmosis

  Osmosis

• Pengangkutan berbantu

  Facilitated transportation

• Resapan berbantu

  Facilitated difussion

• Pengangkutan aktif

  Active transport

Rajah 2 menunjukkan satu eksperimen untuk mengkaji pergerakan bahan merentasi tiub visking.

Diagram 2 shows an experiment to investigate the movement of substances across a visking tube.

Apakah process yang berlaku dalam eksperimen tersebut?

What is the process that takes place in this experiment?

• Resapan

  Diffusion

• Pengangkutan berbantu

  Facilitated transportation

• Pengangkutan aktif

  Active transport

• Osmosis

  Osmosis

Rajah 3 menunjukkan pergerakan molekul-molekul merentasi membran plasma melalui satu proses.

Diagram 3 shows the movement of molecules across the plasma membrane through a process.

Process tersebut ialah

The process is

• pengangkutan berbantu

  facilitated transportation

• resapan berbantu

  facilitated difussion

• osmosis

  osmosis

• pengangkutan aktif

  active transport

Sejenis pergerakan molekul-molekul merentasi membran plasma diterangkan dalam maklumat yang berikut:

A type of movement of molecules across the plasma membrane is described in the following information:

Molekul-molekul dan ion-ion bergerak melawan kecerunan kepekatan dan memerlukan tenaga

Molecules and ions move against the concentration gradient and require energy

Pergerakan tersebut dikenali sebagai

The movement known as

• pengangkutan berbantu

  facilitated transportation

• resapan berbantu

  facilitated difussion

• osmosis

  osmosis

• pengangkutan aktif

  active transport

Rajah 5 menunjukkan struktur membran plasma.

Diagram 5 shows the structure of plasma membrane

Apakah X?

What is X?

• Fosfolipid

  Phospholipid

• Protein pembawa

  Carrier protein

• Kolesterol

  Cholesterol

• Glikoprotein

  Glycoprotein

Rajah 6 menunjukkan pergerakan molekul-molekul Y merentasi membran plasma.

Diagram 6 shows the movement of molecules Y across the plasma membrane.

Apakah kesimpulannya?

What is the conclusion?

• Molekul-molekul Y bergerak secara resapan berbantu

  Molecules Y move by facilitated difussion

• Molekul-molekul Y bergerak secara osmosis

  Molecules Y move by osmosis

• Molekul-molekul Y larut dalam lipid

  Molecules Y move is soluble in lipid

• Molekul-molekul Y bergerak secara pengangkutan berbantu

  Molecules Y move by facilitated transportation

Rajah 8 menunjukkan satu eksperimen untuk mengkaji osmosis.

Diagram 8 shows an experiment to investigate osmosis

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Rajah 9 menunjukkan sejenis organisma.

Diagram 9 shows an organism

Apakah process yang dijalankan oleh organisma tersebut seperti yang ditunjukkan dalam Rajah 9?

What is the process carried out by the organism as shown in Diagram 9?

• Resapan

  Diffusion

• Pengangkutan berbantu

  Facilitated transportation

• Pengangkutan aktif

  Active transport

• Resapan berbantu

  Facilitated difussion

Satu sel tumbuhan direndam di dalam air suling selama 15 minit. Selepas itu, sel tersebut dikeluarkan dan direndam di dalam larutan sukrosa 30%.

A plant cell is immersed in distilled water for 15 minutes. After that, the cell taken out and immersed in 30% sucrose solution.

Apakah keadaan sel tumbuhan tersebut jika ia dimasukkan semula ke dalam air suling selama 15 minutes?

What is the condition of the plant cell if it is put back into the distilled water for 15 minutes?

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Rajah 24 menunjukkan satu eksperimen untuk mengkaji perubahan kepekatan larutan sukrosa dalam tiub visking.

Diagram 24 shows an experiment to investigate the changes of the concentration of sucrose solution in a visking tube.

Antara graf yang berikut, yang manakah mewakili perubahan tersebut?

Which of the following graphs represents the changes?

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