A protein channel is a transport protein that helps larger molecules, that would otherwise not be able to diffuse through the membrane of a cell to move in or out of the cell depending on the concentration gradient.
Cellular respiration occurs in the mitochondria, the first stage in cellular respiration is glycolysis, it occurs in the cytoplasm and breaks down glucose
Is a heterotroph because he doesn't reproduce food itself
Answer:
When a solid is heated the particles gain energy and start to vibrate faster and faster. Further heating provides more energy until the particles start to break free of the structure. Although the particles are still loosely connected they are able to move around. At this point the solid is melting to form a liquid.
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