Enzymes involved in metabolism are most likely regulated via _____
A. feedback inhibition
B. acetylation
C. methylation
D. none of the answers are correct
A
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A population of lizards lives in a rocky area next to a desert. Some lizards are light colored and blend into the sand. Others are dark and blend into the rocks. What may happen to this population of lizards over time?
A. They may evolve into two separate species as a result of directional selection. B. They may remain one species as a result of stabilizing selection. C. They may remain one species as a result of disruptive selection. D. They may evolve into two separate species as a result of disruptive selection. E. They may remain one species as a result of directional selection.
What are the main differences between plant and animal cells?
A.) Animal cells are eukaryotes and plant cells are not. B.) Plant cells are eukaryotes and animal cells are not. C.) Animal cells have cell walls and chloroplasts; plant cells do not. D.) Plant cells have cell walls and chloroplasts; animal cells do not.
A swamp contains lungfishes, lampreys, and ray-finned fishes. As the swamp begins to dry out, which fishes will better survive and why?
What will be an ideal response?
Asclepius, the Greek physician,
A. believed in or advocated the supernatural causes of, and cures for, disease. B. followed, Imhotep's foot steps and taught medicine in the old University of Alexandria during the Ptolemaic reign in Egypt C. wrote De contagione et contagiosis morbis et curatione. In it he described numerous contagious diseases and the means by which contagion can be spread. D. propagated the hypothesis that poisonous vapor or mist made up of particles from decomposing material, caused disease E. believed in or advocated that diseases had natural causes, e.g., "The Four Humor Theory", and that they could be cured by rational methods.