生理学蛋白质选择题（Physiological protein selection）.docVIP

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生理学蛋白质选择题（Physiological protein selection）.doc

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生理学蛋白质选择题（Physiological protein selection）

生理学蛋白质选择题（Physiological protein selection） The problem is 110 points saved 15, each of the complete protein molecules must have A. - helix E. prosthetic group D. four stage structure C. three stage structure B. beta folding The problem is 210 points saved 1. The nitrogen content of a protein sample is 0.40g. How much protein does this sample contain? E.6.25g B.2.50g A.2.00g C.6.40g D.3.00g The problem is 310 points saved 19, if the precipitation of heavy metals with pI 8 protein, the pH value of the solution should be: D. = 8 B. 8 8 C. E. = 8 A.=8 The problem is 410 points saved 18. Serum albumin (pI 4.7). Which of the following pH value solutions is positively charged? E.pH8.0 D. pH7.0 B. pH5.0 C.pH6.0 A.pH4.0 The problem is 510 points saved 10. following the correct description of the concept of hemoglobin is A. is a single subunit protein containing hemoglobin iron porphyrin B. hemoglobin oxygen dissociation curve is S C.1 hemoglobin molecules can be reversibly combined with 1 oxygen molecules D. hemoglobin is not an allosteric protein The function of E. hemoglobin is the same as myoglobin The problem is 610 points saved 22. Proteins with four levels of structure are characterized by: E. consists of two or more polypeptide chains with three levels of structure in two C. each polypeptide chain has independent biological activity A. molecules must contain prosthetic groups The stability of D. dependent peptide four level structure maintenance B. in two or more than two with a polypeptide chain of three level structure on the basis of further peptide folding, bending forming The problem is 710 points saved 12. The amino acids present in the structure of peptide chains are A. Pro D. Met C. Glu E. Ala B. Cys The problem is 810 points saved 7. The following statement about glutathione is correct A. glutathione contains cystine In B. glutathione, the alpha carboxyl group of glutamic acid is free C. glutathione is an important oxidant in vivo The C terminal carboxyl