The ________ show(s) a remarkable degree of degeneration (involution) with age.
A. appendix
B. pharyngeal tonsils
C. spleen
D. thymus
E. lymph nodes
Answer: D
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If you centrifuge (spin) whole blood, you will find the red blood cells (erythrocytes) at the bottom of the tube and white blood cells atop them. This implies that ________
A) red blood cells are larger than white blood cells B) white blood cells are fewer in number than red blood cells C) white blood cells are smaller than red blood cells D) red blood cells have a greater density than white blood cells
A __________ is a jagged line where bones join and form a nonmovable joint
Fill in the blank(s) with correct word
Lipids
A. function as enzymes. B. can insulate and help prevent heat loss. C. are all water soluble. D. comprise the genetic material of cells. E. yield little energy per unit of weight.
An immunoglobulin molecule is an antigen secreted by T lymphocytes.
Answer the following statement true (T) or false (F)