Q: In which type of reaction are compounds formed? Choices: - gaseous reaction - acid reaction - balanced reaction - chemical reaction A:
chemical reaction

Q: What are molecules that the immune system recognize as foreign to the body? Choices: - viruses - peptides - tumors - antigens A:
antigens

Q: Q: In which way do vertebrates reproduce? Choices: - bisexually - unisexually - asexually - sexually A:
A: sexually

Question: Q: Spores are generally produced through what type of reproduction? Choices: - similar - asexual - hormone - sexual A:
Answer: sexual

*Question*
Q: What orbits an atoms' nucleus? Choices: - neutrally charged ions - positively charged protons - isotopes - negatively charged electrons A:
**Answer**
negatively charged electrons

Q: Q: What stages in the life of a cell does the cell cycle include? Choices: - adult stages - intermediate stages - both - all A:
A: all