The ________ system transports water, oxygen, and a variety of nutrients and other substances necessary for life to the cells, and transports waste products away from the cells
A) Respiratory
B) Urinary
C) Cardiovascular
D) Digestive
C
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Joey is 6 months old and requires a blood transfusion; his blood type is B. What type of blood may he receive? Is his age a factor in your answer? What would happen if he received a "wrong" blood type? If Joey were younger, is it possible that there is no "wrong" blood type? Why may it surprise a beginning physiology student, familiar with the basics of immunology, that a person could mount an
immediate immune response to transfused blood? Explain all of your answers. What will be an ideal response?
If the amino acid coding region of an mRNA molecule is 1800 nucleotides (bases) in length, this molecule will contain ________ codons.
A. 900 B. 1200 C. 600 D. 800 E. 400
Sex cells are called _______________
A. gametes B. sperm C. eggs D. zygotes E. chromosomes
A graded potential is one that
A. is all or none (always the same intensity). B. travels the length of the nerve fiber (is long-distance). C. varies in size depending on the magnitude of the stimulus (larger voltage change for stronger stimulus). D. lasts for several seconds after ion channels have opened, closed, and reset.