A. Patient is male because there is a Y chromosome
B. 47 chromosomes
C. Down syndrome or trisomy 21
<span>The spicules have an important purpose for loosely constructed animal such as sponge. First of all, spicules give structure which is vital due to loose construction. Secondly, it protects from predators. This is similar to porcupine quills in serving to protect.</span>
I believe the foramen is located in between spinal nerve roots.
C. Channel proteins bind to molecules too large to diffuse into or out of the cell, and allow them to pass.
