a hypothetical cell has a higher concentration of sodium ions outside the cell than inside the cell but an equal amount of chloride outside the cell and inside the cell. based on its electrochemical gradient, which direction would chloride ions move across the cell membrane?

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.

Which of the following explains why a tree is often used as a model to represent the principle of common descent