Q: By applying salt to an icy road, the melting point of the ice is what? Choices: - concentrated - compounded - increased - decreased A:
decreased

Q: Latitude plays an important role in determining what in a region? Choices: - drought - landscape - migration - climate A:
climate

Q: Q: What has hot days and cool nights, and are typically covered with sand dunes or sparse but hardy plants? Choices: - rain forest - tundra - arctic - deserts A:
A: deserts

Question: Q: What occurs when a substance diffuses through a cell membrane without any help from other molecules? Choices: - simple filtration - visible diffusion - visual diffusion - simple diffusion A:
Answer: simple diffusion

*Question*
Q: Activated macrophages and neutrophils discharge what that signals molecules that enhance an immune response? Choices: - alkaloids - pathogens - nucelotides - cytokines A:
**Answer**
cytokines

Q: Q: What is the name of the hollow nerve cord along the back of chordates? Choices: - zetacord - mesoderm - phloem - notochord A:
A: notochord