Which is true of atoms [a]A) there are only uncharged neutrons in the nucleusB) they have equal number of protons and neutrons in the nucleusC) they have equal number of protons and electronsD) they have  equal number of charged and uncharged subatomic particles

________ are the units of inheritance [a]A) GenesB) ProteinsC) rRNAD) DNAE) mRNA

 How many different amino acids are there [a] A) 20B) 23C) 22D) 25

What is the pH of a substance that has equal number of H+ and OH-  [a] A) 7B) 6C) 5D) neutralE) A and D are correct

Why is carbon so important in biology [a]A) It is the most common element on Earth.B) It has very little electronegativity, making it a good electron donor.C) It bonds to only a few other elements.D) It has the ability to bond with 2 other atomsE) It can form a variety of carbon skeletons and host functional groups.

The type and number of bonds an atom can form depends on [a]A) its atomic number, thus the number of protonsB) its electrons in the valence shellC) its atomic mass, the neutrons and protonsD) the number of particles in its nucleus

The biggest of the rock-and-roll sensations of the 1950s was undoubtedly

William J. Levitt was the pioneer of

All the following are true regarding American teens in the 1950s EXCEPT

The United States’ participation in NATO