Author Question: Which pair of amino acids can form hydrogen bonds between their R groups? A) arginine and ... (Read 189 times)

CQXA · **on:** Aug 27, 2018

Which pair of amino acids can form hydrogen bonds between their R groups?

A) arginine and glutamate
B) aspartate and lysine
C) leucine and alanine
D) glutamine and serine
E) glycine and asparagine

Question 2

What is the concentration of NO3- ions in a solution prepared by dissolving 25.0 g of Ca(NO3)2 in enough water to produce 300. mL of solution?

A) 0.254 M
B) 0.508 M
C) 0.672 M
D) 1.02 M