When your mother is mad at you, she likes to remind you that she spent 48 hours in painful labor to bring you into the world! Specifically, she means that she spent a long time in the ________ stage of labor
A) third trimester B) expulsion C) placental D) dilation
Answer: D
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Using the great lubber grasshopper as a model, Walter Sutton observed:
A. separation of maternal and paternal chromosomes during mitosis. B. replication of chromosomes during meiosis. C. crossing over of homologous chromosomes. D. pairing of homologous chromosomes during mitosis. E. pairing of homologous chromosomes during meiosis.
In cats, short hair (L) is dominant to long hair (l). If a short-haired cat of unknown genotype is crossed with a longhaired
animal, and they produce one long-haired kitten and one short-haired kitten, this would indicate that ____.
a. the short-haired cat was true-breeding b. the short-haired cat was not true-breeding c. the long-haired cat was not true-breeding d. the long-haired cat was heterozygous e. neither parent was true-breeding
In the equation ?G'o = nF ? ?E'o, ________.
A. when the difference in reduction potentials between the electron donor and electron acceptor is small, the yield of free energy is great B. the difference between the reduction potentials of the redox participants is inversely proportional to the change in free energy C. the greater the difference in standard reduction potentials between the electron donor and electron acceptor, the greater the free energy available to do work D. the greater the difference in reduction potentials of the participants of the redox reaction, the smaller the energy yield to the surroundings
All of the following are milestones in the evolution of plants EXCEPT
A. flower production. B. the development of vascular tissues to conduct water and solutes throughout the body of the plant. C. nourishment of a multicellular embryo within the body of the female plant. D. the switch to chlorophyll as the primary photosynthetic pigment. E. seed production.