Q: Which class of acids acetic acid (ch 3 cooh) belongs to? Choices: - anorganic acids - strong acids - common acids - organic acids A:
organic acids

Q: Because force and electric field are what, they have direction as well as their value? Choices: - sensors - neurons - mass - vectors A:
vectors

Q: Q: What can sodium ions not pass through? Choices: - Lipid Control - benthic lipid bilayer - narrowness lipid bilayer - nonpolar lipid bilayer A:
A: nonpolar lipid bilayer

Question: Q: Deleting or inserting a nitrogen base causes what? Choices: - a placentation mutation - a degenerative mutation - a photoinhibition mutation - a frameshift mutation A:
Answer: a frameshift mutation

*Question*
Q: Which element has an atomic number of 16? Choices: - acid - methane - oxygen - sulfur A:
**Answer**
sulfur

*Question*
Q: What is lava called before it reaches the surface of the earth? Choices: - crust - pyrite - rock - magma A:
**Answer**
magma