Why are stem cells important?

A) They are incapable of becoming cancer cells.

B) They have specialized DNA.

C) They have the potential to develop into other cell types.

D) They have the potential to undergo cell division.

If x = - 3 is the only x-intercept of the graph of a quadratic equation, what is the best description of the discriminant of the equation? A. The discriminant is negative. B. The discriminant is - 3. C. The discriminant is 0. D.

Can you think of any other fictional ""monsters"" that might have been inspired by real-world parasites? Describe that monster and its parasitic behavior.

Finding that two species have similar DNA is an example of studying which characteristic to determine evolutionary relationships? A. chromosome similarity B. biochemistry C. structural similarities D. geographical distribution

If night blindness is a recessive trait, what should the phenotype of the couple's fourth child be? a. The child could be night blind or have normal vision. b. The child will develop night blindness later in life. c. The child will be night blind. d.

Seedless plants use rhizoids to reproduce, not seeds. True or False

How does a vascular plant's phloem differ from its xylem? A. Phloem is found only in the leaves. B. Only phloem transports water. c. Only water flows through phloem. D. Phloem has a two-way flow of materials,

Many mutations have been identified in the lac operon. A particular mutation prevents the repressor protein from binding to the operator under all circumstances.

What is the independent variable in this experiment? A) temperature B) Number of chirps C) Number of crickets D) Location of the laboratory

The parents of a client with a mental illness being cared for at home tell the nurse that they have been feeling overwhelmed lately. they say, "we need to get away for a few days to recharge ourselves.

Explain how the conversion of wetlands to farmland has impacted streams and rivers.