James and Sally wanted to have a baby but were not having any luck, so they decided to try an artificial means of conception. They eventually were directed to a laboratory, where sperm and eggs were placed in a dish. This allows a sperm to merge with the
egg as it would in the oviduct. This procedure is called ________.
A) surrogate motherhood B) in vitro fertilization
C) gamete intrafallopian transfer D) zygote intrafallopian transfer
Answer: B
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Which of the following statements concerning the indirect values of biodiversity is NOT correct?
A. Forests act like a giant sponge, soaking up excess water and releasing it during drier periods. B. If human impacts on the environment damage or destroy biogeochemical cycles, then technology will have to artificially re-create those cycles. C. Diverse organisms are critical in breaking down wastes and immobilizing pollutants. D. Trees take up carbon dioxide and release oxygen when they photosynthesize. E. All of the choices are correct.
Junction between cells in which the adjacent plasma membranes do not touch but are held together by intercellular filaments attached to buttonlike thickenings.
What will be an ideal response?
At what point in the cell cycle does DNA replication take place?
A) before mitosis B) during cytokinesis C) continually throughout the cell cycle D) during mitosis
Can you think of other examples in our anatomy or physiology that represent an "imperfect design" due to evolutionary history similar to the crossing pathways of food and air?
What will be an ideal response?