All of the following membrane transport mechanisms are passive processes except facilitated diffusion. phagocytosis osmosis. diffusion.

Give one way in which active transport differs from facilitated diffusion

The movement of a substance across a membrane, from low to high concentrations of that substance (requiring the expenditure of energy, often in the form of ATP hydrolysis), is always categorized as: active transport facilitated diffusion simple diffusion passive transport osmosis

The cytoplasm of a certain cell is composed of a solution that is 98% water, 2% solutes. Consider the solution shown in the beaker in this picture: FOOE OOS Foor solution. [Select] Cytoplasm is 98% water, 2% solutes. The solution in the beaker would be considered when compared to [Select] The plasma membrane is impermeable to solutes. Beaker solution is 98% water, 2% solutes the cell. We would expect that the cell would [Select] if it was placed in the would account for whatever changes might occur to the volume of the cytoplasm of the cell when it is placed in the solution.

Diffusion is incredibly important for the proper functioning of cells. Our question today is whether or not it is diffusion that is the cause of the commonalities between different cells in their size and shape. You will be measuring the rates of diffusion in cell models that are cut into different shapes and sizes

Which of the following characteristics may be used to describe Active Transport? Select all that apply. occurs without a transporter protein requires an energy source shows saturation kinetics (has a maximum rate) can occur against a concentration gradient (i.e. uphill)

A cell is placed in a hypertonic medium triggering its regulatory volume control mechanism. Which of the following statements best describes the main ion movement responsible for the regulatory volume control in this situation?     Efflux of K+ from the cytosol.     Efflux of Na+ from the cytosol.     Influx of Na+ into the cytosol.     Influx of K+ into the cytosol.

Which of the following molecules is least like to enter a cell by simple diffusion? Oxygen Carbon dioxide Steroid hormones Fatty acids Sodium

Identify the non-polar organic molecule which can pass freely through the plasma membrane. CH3CH2OH (ethanol) N2 (nitrogen gas) CO2 (carbon dioxide) C6H6 (benzene) C6H12O6 (glucose)

What type of endocytosis moves specific molecules from the extracellular fluid into the cell?     Receptor-mediated endocytosis     Pinocytosis     Phagocytosis     Secretion