Bacteria can regulate gene expression which allows it to ___
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Yeah yeah so :D,
Large polar molecules can only cross the membrane with the help of protein named channel protein and carrier protein.
So, this both proteins act like a gate, the large molecules enter the protein and the protein let the large molecules in to the membrane. (see the picture so that you can understand more, its carrier protein)
the only difference between channel protein and carrier protein is, channel proteins has fixed shape while carrier protein can flip.
A body is made of matter and matter is made of very small particles called molecules, which are constantly moving.
The molecules in a cold body move little but in a hot body they move more because we have provided heat.
When a hot body comes into contact with a cold body these things happen:
1) the hot body cools down (becomes cold).
2) the cold body heats up (gets hot).
3) both bodies reach the same temperature.
In summary, the heat passes from the hottest body to the coldest body until thermal balance is reached (the two bodies reach the same temperature).
The molecules in a cold body move little but in a hot body they move more because we have provided heat.
When a hot body comes into contact with a cold body these things happen:
1) the hot body cools down (becomes cold).
2) the cold body heats up (gets hot).
3) both bodies reach the same temperature.
In summary, the heat passes from the hottest body to the coldest body until thermal balance is reached (the two bodies reach the same temperature).