A research team began a study of a cultured cell line. Their preliminary observations showed them that the cell line did not exhibit either density-dependent inhibition or anchorage dependence. What could they conclude right away?

A) The cells are unable to form spindle microtubules.
B) They have altered the series of cell cycle phases.
C) The cells show characteristics of tumors.
D) They were originally derived from an elderly organism.


C

Biology & Microbiology

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Ten individuals of two inbred strains of mice, A and B, are fed identical diets. All have normal blood sugar as adults. The same mice are then fed diets high in sugar. Mice from strain B develop diabetes, but mice from strain A do not

Diabetes in strain B mice results from: A. the interaction of their diet with their genotype. B. their genotypes, which are different from strain A mice. C. their diets, which are different from strain A mice. D. their norm of reaction to sugar in their diets. E. None of these choices is correct.

Biology & Microbiology

An animal's circulatory system contains ____

a. solid medium to transport nitrogen b. blood vessels for transporting solid food c. blood vessels leading to the heart d. a mouth opening to the outside e. nitrogen to transport wastes

Biology & Microbiology

Which of the following is not a checkpoint in the cell cycle?

A. The G1/S transition D. Late metaphase B. The S/G2 transition E. The prophase/ metaphase transition C. The G2/M transition

Biology & Microbiology

During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?

A) Telophase B) Anaphase C) Prophase D) Metaphase

Biology & Microbiology