List at least three important safety rules to follow when conducting science experiments or activities.

The carbon dioxide that you exhale is a product of ...

Hepatitis "___" may be dormant in the body for years before the signs and symptoms appear.

Cell membranes allow some molecules to move freely across the membrane, while other molecules are restricted. Which term BEST describes this capability of a cell membrane? A. semipermeable B. impervious C. resilient D. unyielding

1. What is a pathogen?

Smooth muscle: a. Is voluntary b. Is found in the heart c. Is found in lining the intestines d. All of the above

What is the chemical in leaves that absorbs light?

If a DNA double helix strand contains 3.6 billion based total, and there are 0.8 billion adenine bases contained in that strand, how many cytosine bases are there?

Compare/contrast under nutrition to malnutrition

Explain how having nerve cells clustered around the edge of its bell is advantageous to a medusa

Mutations are rare and occur because of? -An error in DNA replication -natural event such as an earthquake -Migration of organisms to a new population