Q: What is critical for the formation of hemoglobin? Choices: - salts - proteins - platelets - iron ions A:
iron ions

(Question)
Q: What is a group of organs that work together to do the same job? Choices: - an organ colony - an organ assembly - an organ battery - an organ system A:
(Answer)
an organ system

Ques: Q: What kind of reactions between an acid and a base yield a salt and water? Choices: - oxidation - evaporation - distillation - neutralization A:
Ans: neutralization

(Q).
Q: What is the term for a state of matter that yields to sideways or shearing forces? Choices: - gravity - solid - plasma - fluid A:
(A).
fluid

Ques:Q: What is a form of matter that has a definite volume, but an indefinite shape? Choices: - a solid - a plasma - a gas - a liquid A:

Ans:a liquid

Question: Q: What is the outermost layer of the skin? Choices: - dermis - nexus - callus - epidermis A:
Answer:
epidermis