Q: In the scientific method, what is the initial, unproven explanation for why something is occurring? Choices: - concepts - idea - theories - hypothesis A:
hypothesis

(Question)
Q: Avoiding carcinogens helps lower the risk of what? Choices: - radiation - colds and flu - sunburn - cancer A:
(Answer)
cancer

Ques: Q: What is part of a cycle that holds an element or water for a long period of time called? Choices: - homeostasis - a ditch - a holding tank - a reservoir A:
Ans: a reservoir

(Q).
Q: What is the name of the command center of the cell? Choices: - mitochondria - molecules - vacuole - nucleus A:
(A).
nucleus

Ques:Q: What leads to multiple copies of a chromosomal region? Choices: - minimilizations - gene modification - subtractions - duplications (or amplifications ) A:

Ans:duplications (or amplifications )

Q: A gene may have different versions called what? Choices: - genomes - peptides - locus - alleles A:
alleles