Discuss the major trends in hominid evolution
What will be an ideal response?
Bipedalism (walking on two feet) evolved early and may have set the stage for increases in brain size. These two developments are in turn linked to cultural developments, such as tool use and language. The degree of sexual dimorphism decreased.
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Scientists attempted for many years to conduct nuclear transplants but failed. However, geneticists had success in cloning a sheep. They were successful because they
A. picked a cell very early in development. B. replicated the blastomeres before insertion. C. delayed transcription in the blastomeres. D. treated the nucleus with sheep plasma before nuclear insertion. E. utilized a new micro pipette technique.
Which answer best describes energy flow in biological systems as described in the text?
a. glucose ? G3P ? NADH ? ATP b. bacteria ? archaea ? plants ? animals c. NAD+ ? NADH ? ADP ? ATP d. G3P ? glucose ? ATP ? NAD+ e. pyruvate oxidation ? glycolysis ? fermentation ? citric acid cycle
Osteoclasts function in bone remodeling to
a. free mineral ions. b. stimulate blood cell formation. c. accelerate bone repair. d. lay down a bony matrix. e. do all of these
Which of the following is the proper sequence for
mitosis? I. metaphase II. telophase III. prophase IV. anaphase a. I, III, IV, II b. I, II, III, IV c. III, I, IV, II d. IV, I, III, II e. III, IV, I, II