Answer the following question given this paragraph: Three unit cells of the cubic crystal system. Each sphere represents an atom or an ion. In the simple cubic system, the atoms or ions are at the corners of the unit cell only. In the face-centered unit cell, there are also atoms or ions in the center of each of the six faces of the unit cell. In the body-centered unit cell, there is one atom or ion in the center of the unit cell in addition to the corner atoms or ions. Q: In the simple cubic system, the atoms or ions are located in which part of the cell? Choices: - mitochondria - plasma - walls - corners A:
corners

Answer the following question given this paragraph: Amino acids connect together like beads on a necklace. MET, ASN, TRP, and GLN refer to four different amino acids. Q: Met, asn, trp, and gln connect together like beads on a necklace and are an example of what type of acids? Choices: - polymer acids - organism acids - peptic acids - amino acids A:
amino acids

Answer the following question given this paragraph: A neutron is one of three main particles that make up the atom. It is found in the nucleus and is neutral in electric charge. It has about the same mass and diameter as a proton. Neutrons are found in all atoms except for most atoms of hydrogen. Q: Where in the atom is a neutron found? Choices: - electron - proton - orbit - the nucleus A:
the nucleus

Answer the following question given this paragraph: Most minerals are a combination of metal and other elements. The rocks that are taken from a mine are full of valuable minerals plus rock that isn't valuable. This is called waste rock. The valuable minerals must be separated from the waste rock. One way to do this is with a chemical reaction. Chemicals are added to the ores at very high temperatures. Q: The rocks that are taken from a mine are full of valuable minerals plus rock that isn't valuable. what is this rock called? Choices: - garbage rock - compost rock - empty rock - waste rock A:
waste rock