Answer to Question 1
ANS: B
Transferrin is the carrier protein for iron. Ferritin and hemosiderin are storage forms of iron. Albumin is a carrier protein for many substances but not for iron.
Answer to Question 2
ANS: C
Ferritin is the soluble form of storage iron and is more readily available for use. Hemosiderin is ferritin that has been partially degraded; as a result, it is insoluble and precipitates. It is this form of storage iron that is stained by iron-specific stains such as the Prussian blue stain.
The activation of G-protein-coupled receptors and G proteins
Hemophilia inheritance pattern between a female hemophilia carrier and a male without hemophilia.
The thermodynamics of protein folding depicted as a free-energy funnel
Matthew Ritchie, three stills from The Iron City.
Levels of protein structure: Tertiary structure
A schematic view of delivery of a protein, synthesized in cytoplasm, into the nucleus