Ques: Q: In a model of a hemoglobin molecule, the purple part indicates the presence of what element? Choices: - gold - helium - silver - iron A:
Ans: iron

Ques: Q: Composed largely of the polysaccharide chitin, the exoskeleton provides an effective barrier defense against most what? Choices: - parasites - white blood cells - vaccines - pathogens A:
Ans: pathogens

Ques: Q: Quarks also have a different type of charge, called what? Choices: - contrast charge - pure charge - spontaneous charge - color charge A:
Ans: color charge

Ques: Q: What are the female gametes that form in the ovaries? Choices: - sperm - spermatozoa - genes - eggs A:
Ans:
eggs