Which of the following statements best describes the structure of the cell membrane? A single layer of proteins surrounding a single layer of lipids
a single layer of cells surrounding cells
Two layers of phospholipids with protein molecules for channles
a chain of proteins

What does all of the organ system in a human form

Study the image of this rock.which characteristic best supports its formation from sedimentary processes? it has many layers.it is coarse-grained.its grain shape is round.its texture is non-banded.

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.