At the cellular level, the development of an adult animal from a fertilized egg involves ____
a. mitosis only
b. meiosis only
c. cell differentiation only
d. mitosis, cell differentiation, and morphogenesis
e. meiosis, cell differentiation, and morphogenesis
ANSWER: d
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A. filters toxins out of the bloodstreams B. maintains water balance in the body C. produces and excretes urine D. all of the above are roles of the urinary system
Blood pressure is the force that drives molecules out of the glomerulus into the Bowman's capsule.
a. true b. false
Your friend is complaining of back pain. She also says that she hurts the most near her neck. What part of her back may have been injured?
A) cervical vertebrae B) thoracic vertebrae C) sacrum D) coccyx
The alternative pathway for complement activation is initiated by
A) lipid-carbohydrate complexes and C3. B) C5-C9. C) antigen-antibody reactions. D) factors released from phagocytes. E) factors released from damaged tissues.