Which one of the following is TRUE regarding the "recycling" of hemoglobin?
A) The peptide chains are broken down into their constituent fatty acids.
B) The iron atoms are returned to the red bone marrow.
C) The heme groups are converted to urine by the kidneys.
D) The peptide chains are transported intact to the bone marrow for reuse.
E) The heme groups with their iron atoms are transported to the spleen.
B
You might also like to view...
Robert Koch contributed to the field of microbiology by being the first person to
A) develop the tuberculin test. B) formulate four postulates for definitively linking a specific microorganism to a specific disease. C) use agar as a solidifying agent in growth media. D) develop the tuberculin test, formulate four postulates for definitively linking a specific microorganism to a specific disease, and use agar as a solidifying agent in growth media.
In eukaryotic cells, the electrons donated by NADH and FADH2 are transported along electron transport proteins in the
A. matrix. B. inner mitochondrial membrane. C. cytoplasm. D. outer mitochondrial membrane. E. cell membrane.
Which of the following does NOT describe the
Casparian strip? a. waxy b. component of the endodermis c. permeable d. barrier e. waterproof
Cytotoxic T-cells
A. lack specificity for a target cell. B. secrete interleukin-2 to stimulate B and T-cells. C. stimulate B-cell proliferation. D. secrete granzymes and perforins that damage target cells. E. All of these choices are correct.