What specifically occurs when the phosphate is released from the inner surface of the membrane? A. Sodium moves to the outside of the cell B. ATP is broken down into ADP and phosphate C. Sodium moves to the inside of the cell D. Potassium moves to the inside of the cell

A young man in his 20s has a heart attack and is rushed to the hospital. Blood is drawn, and his cholesterol level is tested and found to be very high. The doctor tells him that he has a genetic condition in which he is unable to effectively remove LDL particles containing cholesterol from his blood and into his cells. Which cellular process is not functioning normally? a. channel-mediated facilitated diffusion b. receptor-mediated endocytosis c. exocytosis d. simple diffusion?

How can substances be transported across a membrane against their concentration gradient?   A. If the plasma membrane is fully hydrophobic.   B. The plasma membrane is permeable to all small molecules.   C. Some membrane proteins act as channels for specific molecules to enter the cell.   D. Some membrane proteins are ATP-dependent carrier molecules.

What do you think causes the difference in time that it takes water to pass through the different materials? Use the terms porosity and permeability in your answer.

What is the function of an enzyme? A. Catalyze chemical reactions C. Facilitate movement across membranes D. Store energy E.Bind to messengers

What is the minimum amount of energy required to start a chemical reaction?   A. Activation energy   B. Net energy input   C. Potential energy   D. Net energy output

If ENa is + 60 mV, [Na] out/in is [150]/[15], and Vm is +30 mV, which answer CORRECTLY describes Na+ diffusional, electrostatic, and overall net fluxes? a. Diffusion IN, electrostatics OUT, net flux OUT b. Diffusion IN electrostatics IN, net flux IN c. Diffusion OUT, electrostatics OUT, net flux OUT

Which image below represents the site where an electrical signal is converted to a chemical signal? C. Zoi Spind ne

*Image down below*

What is osmosis?     a. the process where water diffuses across the cells' membrane from an area of lower water concentration to an area of higher water concentration   b. Where a solute diffuses across the cell membrane from an area of higher to lower concentration     c. the process where water diffuses across a cells' membrane to an equal concentration of water on both sides of the membrane   d. The process where a solute diffuses into water through membranous sacks not using energy