Question: Q: What is the protist kingdom sometimes called as? Choices: - fossil can kingdom - flora can system - plant can kingdom - trash can kingdom A:
Answer: trash can kingdom

Question: Q: How is the energy of an atomic orbital affected as the principal quantum number increases? Choices: - it decreases - It doubles - It triples - it increases A:
Answer: it increases

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