Question

which of the following transport mechanisms relies solely on the kinetic energy of molecules and the concentration gradient to move substances across the cell membrane? simple diffusion. endocytosis. active transport. exocytosis. the cell membranes role in maintaining homeostasis is directly related to its ability to: store genetic information. control the movement of substances into and out of the cell. produce enzymes for metabolic reactions. synthesize proteins for cell structure.

Explanation:

1. Simple diffusion is a passive - transport process that relies on the kinetic energy of molecules and the concentration gradient to move substances across the cell membrane. Endocytosis, active transport, and exocytosis require energy input or involve vesicle - formation processes and are not solely dependent on kinetic energy and concentration gradient.
2. The cell membrane's ability to control the movement of substances into and out of the cell helps maintain a stable internal environment (homeostasis). Storing genetic information is the function of DNA in the nucleus, producing enzymes for metabolic reactions is related to the cell's organelles like ribosomes and the endoplasmic reticulum, and synthesizing proteins for cell structure is also mainly the job of ribosomes and related organelles.

Answer:

1. Simple diffusion
2. Control the movement of substances into and out of the cell