Q: The stems of all vascular plants get longer through primary growth. this occurs in primary meristem at the tips and ______ of the stems. Choices: - edges - bottoms - layers - nodes A:
nodes

Q: Comprising 10 percent of the mass of the brain, what structure has varied functions that all point to a role in the motor system? Choices: - medulla oblongata - cerebrum - superior peduncle - cerebellum A:
cerebellum

Q: Q: Arteries have thinner wall layers and valves and move blood by the action of skeletal what? Choices: - marrow - collagen bands - hormones - muscle A:
A: muscle

Question: Q: What is the ideal mechanical advantage in the single fixed pulley? Choices: - zero - 2 - 4 - 1 A:
Answer: 1

*Question*
Q: What are algae that live in colonies of hundreds of cells called? Choices: - chlorophyta - euglenids - rhodophyta - volvox A:
**Answer**
volvox

*Question*
Q: In the human ear, sound waves cause the stapes to press against what? Choices: - yellow window - shaped window - Idea Window - oval window A:
**Answer**
oval window