Q: What are proteins? Are proteins polymers? Explain. What molar
What are proteins? Are proteins polymers? Explain. What molar mass ranges are shown by proteins? What fraction of our bodies is made up of proteins?
See AnswerQ: What is an element? Which elements are most abundant on the
What is an element? Which elements are most abundant on the earth? Which elements are most abundant in the human body?
See AnswerQ: Without consulting any reference, write the name and symbol for as
Without consulting any reference, write the name and symbol for as many elements as you can. How many could you name? How many symbols did you write correctly?
See AnswerQ: The symbols for the elements silver (Ag), gold (Au
The symbols for the elements silver (Ag), gold (Au), and tungsten (W) seem to bear no relation to their English names. Explain and give three additional examples.
See AnswerQ: Nonpolar side chains in a-amino acids tend to be ,
Nonpolar side chains in a-amino acids tend to be , whereas polar side chains are most often in an aqueous medium.
See AnswerQ: Given the structures of the amino acids in Fig. 21.
Given the structures of the amino acids in Fig. 21.2, choose two amino acids that you would expect to have hydrophobic side chains and two amino acids that you would expect to have hydrophilic side ch...
See AnswerQ: Perhaps the most important concept in introductory chemistry concerns what a mole
Perhaps the most important concept in introductory chemistry concerns what a mole of a substance represents. The mole concept will come up again and again in later chapters in this book. What does one...
See AnswerQ: Many college students would not choose to take a chemistry course if
Many college students would not choose to take a chemistry course if it were not required for their major. Do you have a better appreciation of why chemistry is a required course for your own particul...
See AnswerQ: Given the structures of the amino acids alanine and serine as shown
Given the structures of the amino acids alanine and serine as shown in Fig. 21.2, draw structures for each of the two dipeptides that these amino acids might form. From figure 21.2
See AnswerQ: How many unique amino acid sequences are possible for a tripeptide containing
How many unique amino acid sequences are possible for a tripeptide containing only the amino acids gly, ala, and cys, with each amino acid occurring only once in each molecule?
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