Ques: Q: What are the "chemical messenger" molecules used by the endocrine system? Choices: - acids - axons - enzymes - hormones A:
Ans: hormones

Ques: Q: Mammals are synapsids, meaning they have a single opening in what structure? Choices: - spine - heart - hip - skull A:
Ans: skull

Ques: Q: Most fungi can reproduce in which 2 ways? Choices: - binary fission and fusion - sexually and autonomously - sexually and binary fusion - asexually and sexually A:
Ans: asexually and sexually

Ques: Q: An obstacle or opening that is shorter than the wavelength causes greater diffraction of what? Choices: - tides - ranges - particles - waves A:
Ans:
waves