What is the characteristic of a cell membrane that controls which substances can enter and exit the cell?

A.) osmosis

B.) selective permeability

C.) diffusion

D.) concentration gradient

Drew has musically talented grandparents and great-grandparents. in addition to having musical genes, drew is raised in a musically enriched environment. he develops into a talented composer.

How many factors should a well-designed experiment test at one time? A. 1 B. 2 C. 3 D. depends on the number of experiment variables

A reseacher found shark fossils on top of a mountain. What does this evidence suggest?

What process would be directly affected if all of a cells ribosomes were weakened

How do respiratory organs of a fetal pig differ from an adult pig?

Which of the following is an example of a two-shelled mollusk? a. snail. b. oyster. c. gastropod. d. radula.

The type of radiation that will penetrate farthest into a material

What body system transports simple carbohydrates to all parts of the body?

If a molecule is too large to slip through the spaces in the membrane, how will that molecule enter the cell? A. The molecule will shrink so that it can fit in the spaces. B. The molecule will move through a protein channel. C.

What symbol indicates the cardinal directions