This type of membrane transport moves substances against the concentration gradient from an area of low concentration to an area of high concentration using membrane protiens as carriers and requires the input of atp

Its called active transport. We call it active since it requires energy for the transport of molecules against the concentration gradient. ATP must break down to release energy for the process.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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1. desertification

2. captive breeding

3. black rhinoceros

4. renewable resources

explanation:

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