16. Proteins that do not perform any obvious chemical transf C. tran fuctions ar
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16. Proteins that do not perform any obvious chemical transf C. tran fuctions aremation, but control the ability of e. transport proteins d. storage proteins other proteins to carry out their physiological sforma unctions are: e. structural proteins is likely to be present in d. Aspartate Arginine b. regulatory proteins 7. A protein has a basic pl value. Which of the following amino acids is likely to be Arpnine relatively large amounts? a. Glycine b. Serine c. Valine Which of the following is not a characteristic of hem a. b. c. d. e. 18. It contains two different types of subunits It contains a prosthetic group. It is an allosteric protein. It transports oxygen. All of these statements are true regarding Hb. hemoglobin Grby gen bonds are the only stabilizing force in this type of structure in ror th 19. Hy in proteins: e. All of these a. primary structure b. secondary structure Which are the four most common elements in the human body? a. c. tertiary structure d. quaternary structure 20. hydrogen, calcium, oxygen and sodium hydrogen, oxygen, iron and carbon d. oxygen, carbon, iron and nd nitrogen b. nitrogen hydrogen, oxygen, carbon and nitrogen c. e. oxygen, silicon, calcium 21. Key properties of proteins include a. b. c. d. e. a wide range of chemical functional groups. an ability to possess either rigid or flexible structures as dictated the ability to interact with other proteins. a and b. all of the above. by functional requirements. 22. A conjugated protein consists of a polypeptide chain combined with a a. Apoprotein b. Holoprotein c. Prosthetic group d. b&c e. All of the above 23. Which of the following is a function of proteins? a. Defense b. Metabolic regulation All of the above c. Transport d. Catalysis e. Detergents denature proteins by disrupting which of the following? a. Hydrogen bonds b. Disulfide bridges 24. c. Hydrophobic interactions d. Salt bridges e. Both a & b Enzyme control is accomplished in which of the following ways? a. Genetic control b. Covalent modification 25. c. Allosteric regulation d. Compartmentation e. All of the aboveExplanation / Answer
16- Regulatory proteins
Regulatory proteins modify other proteins without changing their chemical structures.
17- Arginine
Arginine is a basic amino acid
18- All are characteristics of Hb
Hb is tetrameric consisting of 2 alpha and 2 beta subunits, contains Iron as prosthetic group,is allosteric and transports O2.
19- Secondry structure
Primary structure has peptide bonds while as teritiary and quaternary structures have covalent bonds as well.
20- C
Carbon, nitrogen, hydrogen and oxygen
21- E
proteins have all the pabove properties
22- C
Prosthetic group- The non-protein part of a conjugated protein is prosthetic group which mostly are formed from vitamins
23- All of above
immnoglobins proteins are for defense
transport proteins are present in Plasma membrane for transport
enzymes are catalytic proteins
24- hydrophobic interactions
25- All of above
Enzyme control by all given ways
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