Ques: Q: Do metals tend to gain electrons or lose electrons in chemical reactions? Choices: - develop electrons - same number of electrons - gain electrons - lose electrons A:
Ans: lose electrons

Ques: Q: What is the physical environment in which a species lives and to which it has adapted? Choices: - ecosystem - land mass - farmland - habitat A:
Ans: habitat

Ques: Q: Amino acids are joined together to form a chain at what molecular structure? Choices: - chloroplasts - chromosomes - DNA - ribosomes A:
Ans: ribosomes

Ques: Q: Amplification that occurs in which cells often requires signal transduction pathways involving second messengers? Choices: - axons - optic nerves - catayst cells - sensory receptor A:
Ans:
sensory receptor