________ is directional growth responses of plants to a unidirectional source of light.
A. Dormancy
B. Phototropism
C. Thermotropism
D. Gravitropism
E. Thigmotropism
Answer: B
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Using transgenic animal models has its limitations because
A) prokaryotic cells are generally better at producing human proteins. B) bacterial pathogens that affect humans do not affect animals. C) the level of gene expression is significantly higher in animals. D) researchers cannot control where a transgene inserts itself into a genome.
The organ of the vertebrate body with the largest
surface area is the a. lung. b. liver. c. stomach. d. skin. e. brain.
What would a scientist see when looking through a microscope at a piece of shoulder muscle?
A. striations with branched fibers B. no striations and unbranched fibers C. no striations and branched fibers D. striations with unbranched fibers E. None of the answers are correct.
The type of ribonucleic acid that, together with proteins, makes up ribosomes; The most abundant type of RNA in most cells
What will be an ideal response?