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

What is the relationship between pigments and chlorophyll?

Qualities of a stone that make it a gemstone. A. usefulness, profitability B. lightness, durability C. ilmenite, rutile D. automobiles, aircraft E. beauty, rarity

Embryonic stem cells give rise to all cell types in the developing embryo. Would you expect the interphase period of stem cells to be long or short?

How can a single cell bacterium grow and reproduce exponentially

Explain how diabetes can affect two other human body systems?

Which structure connects the lateral ventricles to the third ventricle?

The prefix semi means "half," "partially," or "somewhat." explain why this prefix is appropriate for the term semiconductor.

2. extinct : endangered :: a. dinosaur : crocodile b. forn : coal c. death : illness d. coral : rccf

Which of the following statements regarding genotypes and phenotypes is false? Alleles are alternate forms of a gene. The expressed physical traits of an organism are called its phenotype. The genetic makeup of an organism constitutes its genotype.

Which of the following is NOT a biomolecule A.) water B.) lipid C.) Nucleic Acid D.) protien