Q: Knees and elbows are examples of what part of the skeletal system? Choices: - cartilage - muscles - nerves - joints A:
joints

Q: What law shows the relationships among temperature, volume, and pressure? Choices: - Newton's law - Murphy's Law - Law of Conservation - combined gas A:
combined gas

Q: Q: What is the only mechanism that consistently causes adaptive evolution? Choices: - genetic drift - neutral selection - artificial selection - natural selection A:
A: natural selection

Question: Q: What are membrane-bound organelles that can have secretory, excretory, and storage functions? Choices: - prokaryotes - alleles - nuclei - vacuoles A:
Answer: vacuoles

*Question*
Q: The invention of what instrument in the 1930s allowed scientists to see viruses for the first time? Choices: - spy glass - telescopes - magnifying glass - electron microscope A:
**Answer**
electron microscope

*Question*
Q: What do nearly all animals have in common with regards to digestion? Choices: - external digestion of food - complete digestion of food - problematic digestion of food - internal digestion of food A:
**Answer**
internal digestion of food