HEEELP How does diffusion occur across a cell membrane (where do the molecules cross the membrane)

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

Which of the following is the sl unit used to measure temperature a. kilogram b. liter c. meter d. kelvin

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?