________ Proteins Are Composed of Long Linear Polypeptide Chains That

Q41: Tuftsin is a peptide that stimulate and

Q42: It is possible for two different proteins

Q43: What is the charge on an amino

Q44: Which protein stores O₂ in tissues?<br>A)Keratin<br>B)Ferritin<br>C)Hemoglobin<br>D)Myoglobin

Q45: The β-pleated sheet arrangement of a protein

Q47: What is the one-letter abbreviation of arginine?<br>A)A<br>B)R<br>C)P<br>D)G

Q48: Which choice is the only amino acid

Q49: Based on its name,which compound is an

Q50: What is the charge on a zwitterion?<br>A)Positive<br>B)Neutral<br>C)Negative<br>D)The

Q51: Amino acids with an additional COOH group