Which statement is NOT true about red blood cells?
A. There are about 6 million red blood cells per cubic millimeter of whole blood.
B. They are biconcave disks that lack nuclei when mature.
C. Their normal life span is about 120 days.
D. They are mainly produced in the liver.
E. Hemoglobin is a protein that binds oxygen loosely to transport it.
Answer: D
You might also like to view...
The septum in a fungus is
A. the seventh cellular division. B. the seventh nucleus in a dikaryote cell. C. the seventh cell from the tip of the hypha. D. the demarcation between the mycelium and the fruiting body. E. a cross wall that separates hyphae into cells.
In a forest community, the upper layer is called the ________
Fill in the blank(s) with correct word
The several species of finches that developed on the group of islands in the Galápagos are an example of
A. convergent evolution. B. adaptive radiation. C. divergent evolution. D. polyploidy.
The carbon atoms in organic compounds typically form ________ with other atoms.
A. nonpolar covalent bonds B. polar covalent bonds C. ionic bonds D. hydrogen bonds E. either ionic or hydrogen bonds