The difference between normal and sickle-cell
hemoglobin is based upon
a. the number of amino acids in the molecule.
b. the substitution of one amino acid for
another.
c. the number and orientation of the amino
acid chains attached to the heme portion of
the molecule.
d. the number of oxygen molecules that can
be carried.
e. the type of bone marrow that produces it
B
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What will be an ideal response?
Which of the following lists the organization of a mammalian body from least to most complex?
A. tissue—cell—organ system—organ B. organ system—organ—tissue—cell C. cell—tissue—organ—organ system D. tissue—organ—cell—organ system E. organ—organ system—tissue—cell
Based on the endosymbiosis theory that highlights where chloroplasts come from, how would you expect chloroplasts to divide when a plant cell divides?
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___________ are carnivores.
a) Primary consumers b) Primary producers c) Secondary consumers d) Decomposers