Tumors of the central nervous system arise from?

a. neuroglia cells

b. neurons

c. fibroblasts

d. dermal cells

A woman gives birth to a set of fraternal twins: a girl and a boy. She also passes on a color-blindness gene. Which of the children is more likely to be color-blind? I think the answer is B. A. The girl is more likely to be color-blind from birth B.

By dividing twice, the original parent diploid cell is able to produce 4 haploid gametes. true or false

Mr. johnson was speeding to get to school on time and was clocked at a speed of 120 km/h on a major highway. Express the speed of the automobile in m/s

Explain why homeostasis is important in the development and life of cells?

What are structure and function

Maria is testing the behavior of monkeys. First, she shows the monkey a rectangle. Then she shows the monkey a rectangle and a cylinder. If the monkey pushes aside the rectangle, Maria gives the monkey a food reward.

Why is the phloem in a leaf important to the roots of a plant? A. It provides the roots with carbohydrates. B. It provides the roots with nutrients from the soil. C. It transports water to the leaves from the roots. D.

A mutation causing an addition or a deletion of one base pair resulted in the production of a nonfunctional mutant protein. The sequences of the normal and mutant proteins are given below.

What job does each organelle do in a cell?

Which of the following statements is true of an object composed of a single cell? It could be considered living only if it has some of the other characteristics of life. It is a living thing. It is not a living thing. It could become a living thing.