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Korolek [52]
3 years ago
12

State two examples of situations where active transport occurs

Biology
1 answer:
Cloud [144]3 years ago
8 0

When something needs to be transported against its concentration gradient, or a molecule is too big to simply diffuse through a membrane, active transport has to be used. So active transport requires energy (ATP).

Examples:

1. Antiport pumps: transport one substance in one direction while transporting another substance the other way. An example of this is the sodium-potassium pump.

2. Symport pumps - uses a substance that wants to move from an area of high concentration to low concentration and carries another substance against its concentration gradient. An example of this is the sodium-glucose transport protein

3. Endocytosis - large amounts of extra cellular fluid can be taken into a cell - needs ATP to bind proteins in the cell membrane and causes them to change their shape...which eventually causes the surrounding of the fluid to be brought in (a vesicle).

4.exocytosis - opposite of above

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4) God the one and only have said in the Quran that only islam is the religion that is accepted in the side of God and islam means peace and submission to the will of God. And Muslim means the followers. And all Prophets are muslim. And God the one and only in arabic we call it (Allah). And islam is a religion of all Prophets from the beginning of humankind that is prophet adam to the last prophet that is prophet muhammad. Peace be upon them all.

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