Q: Q: Thylakoid membranes contain molecules of what green pigment used in photosynthesis? Choices: - carbonate - sodium - copper - chlorophyll A:
A: chlorophyll

Q: Q: How do you calculate the atomic mass of an element? Choices: - add neutrons and electrons - count the electrons - multiply protons by neutrons - add the protons and neutrons together A:
A: add the protons and neutrons together

Q: Q: Astronomers have wondered if the universe is expanding fast enough to escape the pull of what? Choices: - kinetic energy - Coreolis effect - light - gravity A:
A: gravity

Q: Q: Surface tension and viscosity are generally associated with what form or state of matter? Choices: - solids - gases - electrons - liquids A:
A: liquids