Q: Exchange occurs directly with the external environment in what type of organisms? Choices: - hematopoietic organisms - cell clusters - multicellular organisms - unicellular organisms A:
unicellular organisms

Q: What gives the plant cell strength and protection? Choices: - the protons - the cell nucleus - the genes - a cell wall A:
a cell wall

Q: Q: How do most plants create food? Choices: - electrolysis - atherosclerosis - glycolysis - photosynthesis A:
A: photosynthesis

Question: Q: Many ceramics are composed of what, which are salts containing anions composed of silicon and oxygen? Choices: - vinylates - crystals - soils - silicates A:
Answer: silicates

*Question*
Q: What category of elements are chacterized by their ability to reflect light, called luster, their high electrical and thermal conductivity, their high heat capacity, and their malleability and ductility? Choices: - halogens - nonmetals - noble gases - metals A:
**Answer**
metals

Q: Ether molecules have an oxygen atom and can engage in hydrogen bonding with which other molecules? Choices: - carbon dioxides - proteins - lipids - water A:
water