Which of the following are adaptations for terrestrial life seen in plants?
a. Sporopollenin and an embryo protected and nourished by the parent plant
b. Chlorophylls a and b
c. Cell walls of cellulose and lignin
d. Vascular tissue
e. Cuticle and stomata
Answer: a. Sporopollenin and an embryo protected and nourished by the parent plant
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While shopping at your local drugstore, you stop at the blood pressure machine. It measures your blood pressure as 115/75 (good—that's healthy!). This number means that
A. arterial pressure is 115 mm Hg when the ventricles contract and 75 mm Hg in between ventricular contractions. B. arterial pressure is 75 mm Hg when the ventricles contract and 115 mm Hg in between ventricular contractions. C. arterial pressure is 115 mm Hg when the atria contract and 75 mm Hg in between atrial contractions. D. your sinoatrial node generates a 115 mV signal and your atrioventricular node generates a 75 mV signal. E. your sinoatrial node generates a 75 mV signal and your atrioventricular node amplifies this to a 75 mV signal.
Fundamental similarity due to descent from a common ancestor is called
A. homology. B. analogy. C. commonality. D. convergence. E. analogy and convergence are correct.
When histones are rearranged to control gene access, it is called ____
a. transcription b. chromatin remodeling
c. DNA condensation d. remodeling complex formation e. acetylation
You would predict to see the fewest amino acid sequence substitutions in a protein between a human and a(n) ________.
A. bird B. bacterium C. fish D. snake E. orangutan