Which of the following is a characteristic of the plasma membrane? It is made up of one layer of phospholipids. It doesn't contain any molecules aside from phospholipids. The outward-facing phospholipid tails give it a rough quality. It allows some molecules to pass through but prevents others from doing so.

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.

What is the average speed of a car that traveled 300.0 miles in 5.5 hours

Kudzu vines grow by climbing and wrapping around trees. trees covered by kudzu can die because they are starved of sunlight. what type of relationship exists between the trees and the kudzu growing on them?