Which of the following is likely required to initiate cell differentiation during development?
A. cell division
B. the presence of mRNAs that express cell-specific proteins
C. the buildup of cell-to-cell adhesion molecules
D. the presence of carbohydrates
E. hydration of the egg during fertilization
B. the presence of mRNAs that express cell-specific proteins
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Trophic-level transfer efficiency averages about
A. 1%. B. 25%. C. 33%. D. 10%. E. 0.1%.
Which were the first tetrapods to move to land?
A) Reptiles B) Ray-finned fishes C) Monotremes D) Hagfishes E) Amphibians
Classification.Use the five processes listed below for the following questions.
A. This process precedes the citric acid cycle. B. This process yields the most energy overall. C. This process is responsible for the largest ATP production. D. In this process, the net energy yield is equal to two molecules of ATP, and the final product is ethanol. E. In this one-step process, the final product is the ionized form of lactic acid.
An endotherm typically will have a karger nasal cavity than an ectotherm of equivalent mass.
a. true b. false