Adenosine triphosphate (ATP) contains a sugar in its structure.

These are both:

This structure propels fluids/mucus:

Epithelial tissues are innervated.

The hematopoietic stem cell (HSC) generates:

Extracellular matrix (ECM) is composed of ground substance and _______________.

The ____________ membrane covers organs and does not open to the exterior of the body.  

Which has more sugar:

An alpha-helix within a polypeptide is an example of:

Which level of organization is the largest (or highest)?