In the process of embryonic development (embryogenesis) layers of cells form in a hollow ball of cells called a(n) ______.

What is the name of the structure identified as ‘a’ in the diagram below?

Tay-Sachs disease is a genetic disease that results in accumulation of glycolipids (gangliosides) within nerve cells.  The genetic defect  causes   ______  to be unable  to break down  the glycolipids.

What type of membrane is this (indicated by the arrow)?

Match the following lettered choices on the picture below to the correct term.

The energy for active transport comes from __________.

In the classification of joints, which of the following is true:

A hole through a bone is termed a _______.

Osteolysis is an important process in the regulation of ________.

When osteoblasts begin to differentiate within a fibrous membrane, the process is called