Which amino acid SIDE CHAIN can form an ionic bond with the side chain of aspartic acid at physiological pH

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.