_____ contains widely spaced collagen and elastic fibers, an…

Epithelial membranes consist of _____.

What is the primary nutrient used in cellular respiration?

_____is found lining many respiratory passageways and may in…

Mitosis is division of the _____. In mitotic cell division,…

Cellular respiration requires _____ to break down organic nu…

The chin is _____ to the mouth, and the knee is _____ to the…

_____secrete mucus.

During what phase of mitosis does the nuclear envelope disap…

The genetic code of _____is formed by the sequence of nitrog…