8-All of the following foods are good sources of bioavailable calcium except: a. sardines. b. spinach. c. cheddar cheese. d. milk.

Which of the following materials is most suitable for making bone cements? A. hydroxyapatite B. titanium C. calcium phosphates D. polyethylene Implant O O Oco² 4Cr³+ + 12e + 30₂ + 6H₂O →4Cr(OH), The process illustrated in the figure above is called Passivation Layer Implant The process illustrated in the figure above is called

4. Which of the following is the CORRECT pair of a protein and its function? * A. Hemoglobin: helps regulate blood sugar levels B. Actin and myosin: supplies amino acids to baby mammals C. Rhodopsin: provides strength and flexibility to connective tissues D. Enzymes: speed up reactions in the body and eventually used up in the process

1.Globular proteins fold up in compact, spherical structures that have uneven surfaces. They tend to form multi-subunit complexes, which also have a rounded shape. Fibrous proteins, on the other hand, span relative large distances within the cell and in the extracellular space. Which of the proteins below are fibrous proteins? a. collagen, keratin b. tubulin and actin monomers c. elastase, pepsin d. hemoglobin and myoglobin   2. Which of the following statements is correct regarding oxidoreductase enzymes? a. NADH + H+/NAD+ are involved in catabolism and NADPH + H+/NADP+ participate in anabolism.    b. The oxidation of the reduced member of a redox pair is associated to a ΔΔG < 0. c. The reduction of the oxidized member of a redox pair is associated to a ΔΔG > 0 d. All of the above e. None of the above   3.Which of the following statements is incorrect?     a. We only need to consume vitamins in small amounts b. Vitamins are precursors to…