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The yellow banded shell provides camouflage to the snail in grassland areas. These are more difficult for the birds to see, so less are eaten by predation. As a consequence, more yellow banded snails surv...

Diffusion is the net movement of particles in solution across a partially permeable membrane. The net movement of particles is from higher to lower concentration gradient.

Osmosis is the net moveme...

The heart is a muscular pump which pushes blood out to the body. It does this by contracting the muscle fibres which sqeezes the blood out. The heart has 4 chambers. Blood comes into the top two chambers,...

I would say the main difference here is that eukaryotic cells (e.g. animal cells) have a nucleus and membrane-bound organelles, whereas prokaryotic cells (bacteria and archaea) have no nucleus and no memb...

pH 7 is the optimum pH for amylase. This means it performs best and has maximum activity at this pH. Above pH 7, the activity of amylase rapidly decreases beacuse the concentration of H+ ions (or protons)...