<em>Membrane proteins that aid in the passive transport of substances do so without the use of ATP. During active transport, ATP is required to move a substance across a membrane, often with the help of protein carriers, and usually against its concentration gradient.</em>
Answer:
Mouth, esophagus, stomach, small intestine and large intestine.
Explanation:
Digestive system of frog starts in the mouth and ends at the cloaca which means the enzymes present in the mouth start break down of food eaten by the frog. After food enters the mouth, it goes to the esophagus and then to the stomach. From there, it forwarded to the small intestine, where food becomes broken down and all nutrients extracted from it. it then goes to the large intestine, which absorbs remaining water.
<span>The white blood cells are the ones who leave the blood and enter
tissues to fight off pathogens and invaders. The answer is letter D. They are
not platelets because platelets help the healing of wounds and prevent it from
bleeding by forming blood clots on the wounded area. They are not red blood
cells because they carry oxygen all throughout the body organs. And they are
not capillaries because capillaries are the ones that transports the oxygenated
blood into the arteries.</span>
mutations caused by factors in you environment
mitosis may cause new genetic combinations
replication errors
