Describe the roles of DNA, ribonucleic acid (RNA), and environmental factors in cell differentiation.
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Q 1/5
Score 0
Cell differentiation is critical during embryonic development. The process of cell differentiation results in the production of many types of cells, including germ, somatic, and stem cells. Cell differentiation is most directly regulated by -
60
ATP
DNA
sugars
lipids
Q 2/5
Score 0
Researchers Robert Briggs and Thomas King used ultraviolet radiation to destroy the nuclear DNA of frog eggs. Nuclei from adult skin cells and from tadpole-gut epithelial cells were cultured and then injected into eggs that had their nuclei destroyed. The results were tadpoles. Which conclusion is supported by the data from this investigation?
60
The transplanted DNA functioned as the original nuclear DNA of the egg cell would have
The transplanted DNA mutated during culturing
The DNA from skin cells and epithelial cells was not transcribed
The DNA information for development was silenced in differentiated cells
5 questions
Q.
Cell differentiation is critical during embryonic development. The process of cell differentiation results in the production of many types of cells, including germ, somatic, and stem cells. Cell differentiation is most directly regulated by -
1
60 sec
BIOL.5b
Q.
Researchers Robert Briggs and Thomas King used ultraviolet radiation to destroy the nuclear DNA of frog eggs. Nuclei from adult skin cells and from tadpole-gut epithelial cells were cultured and then injected into eggs that had their nuclei destroyed. The results were tadpoles. Which conclusion is supported by the data from this investigation?
2
60 sec
BIOL.5b
Q.
As a fertilized egg divides, the cells differentiate because they -
3
60 sec
BIOL.5b
Q.
From a single fertilized ovum undergoing a series of rapid cell divisions, a human infant develops. The embryonic cells become specialized for a variety of functions. Which of these statements best describes how different cell types develop?
4
60 sec
BIOL.5b
Q.
What is the role of mRNA in expressing specialized structures?
