Ques: Answer the following question given this paragraph: Hemoglobin Molecule. This model represents the protein hemoglobin. The purple part of the molecule contains iron. The iron binds with oxygen molecules. 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: Answer the following question given this paragraph: 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: Answer the following question given this paragraph: There are six types of quarks . In ordinary matter, virtually all quarks are of the types called up and down quarks. All quarks have mass, and they have an electric charge of either +2/3 or -1/3. For example, up quarks have a charge of +2/3, and down quarks have a charge of -1/3. Quarks also have a different type of charge, called color charge, although it has nothing to do with the colors that we see. Quarks are never found alone but instead always occur in groups of two or three quarks. 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: Answer the following question given this paragraph: Eggs are female gametes that form in the ovaries and are released into the fallopian tubes. Q: What are the female gametes that form in the ovaries? Choices: - sperm - spermatozoa - genes - eggs A:
Ans:
eggs