Q: What quality of sound makes a tuba and a piccolo very different to a listener? Choices: - wavelength - tune - curve - pitch A:
pitch

Q: What is the term for land that has permanently frozen soil? Choices: - ice desert - snow-field - Arctic - permafrost A:
permafrost

Q: Q: The axon terminates on muscle fibers at the neuromuscular junction. acetylcholine is released at this specialized synapse, which causes the muscle action potential to begin, following a large potential known as an end plate potential. when the lower motor neuron excites the muscle fiber, it contracts. all of this occurs in a fraction of a second, but this story is the basis of how this functions? Choices: - cardiovascular system - respiratory system - muscular system - nervous system A:
A: nervous system

Question: Q: What are the cone-like structures that contain sporangia called? Choices: - contrail - medulla - gametes - strobili A:
Answer: strobili

*Question*
Q: Cell walls, plastids, and a large central vacuole distinguish plant cells from what? Choices: - parenchyma cells - phloem cells - eukaryotic cells - animal cells A:
**Answer**
animal cells

Q: Q: With what does cytokinins act in concert to stimulate cell division and influence the pathway of differentiation? Choices: - dna - hormone - ribosomes - auxin A:
A: auxin