biology

Is the side chain of lysine polar or nonpolar? How would lysine interact with phenylalanine (side chain? Explain why.

Why is polymerization such a useful process for cells to make macromolecules?

Can two different species occupy exactly the same niche? What happens?

when might you use the "poor-quality website" in an academic Assignment in Biology?

Question: which is an example of excretion? a) release of sweat from the sweat glands b) removal of carbondioxide from the lungs Please tell me what is the answer. I thought both urea(from the sweat) and CO2 are products of excretion? In fact, my textbook...

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