Since the initial acceptance of cell theory, recent advances in biotechnology have provided scientists with far more information about the structure and function of cells. How has the discovery of DNA and our current understanding of the cell cycle affected cell theory? A. Cell theory was rejected after new evidence showed that DNA contains hereditary information.
B. Cell theory was elevated to a scientific law.
C. Cell theory was expanded to include new components.
D. Cell theory was replaced by a new theory that includes viruses as basic units of life.

Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back