What is the unifying or "core" theme of biology?
A) Evolution
B) Energy transfer
C) Nutrient recycling
D) Hierarchical organization
A
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When experimenters replaced the statoliths in a crayfish statocyst with iron filings and then held a magnet above the animal, what did they observe? (answer based on your knowledge of the function of statoliths)
A. The crayfish stayed upright. B. The crayfish lay on its side. C. The crayfish turned upside down. D. The crayfish attempted to escape by rapidly swimming backwards. E. None of these choices are correct.
Since newborns have an underdeveloped ____, it is important to monitor their diet and exposure to environmental
chemicals.
a. taste buds b. basilar membrane c. somatosensory cortex d. statocysts e. blood-brain barrier
How do two amino acids, such as lysine and methionine, differ from each other?
What will be an ideal response?
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