What theory suggests the origin of the organelles found in Eukaryotic cells? A)the endosymbiotic theory
B)the theory of evolution
C)the protocell theory
D)O the theory of relativity

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.

Diagram of the evolution of land plants?

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this