What does the sour taste come from in foods such as cheese and yogurt?

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination

Why are common names a problem for scientist?

Tay-sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large, complex, undigested lipids. which cellular organelle must be involved in this condition?