A scientist identifies several structures in a cell and organizes them in the list below. Describe how the cell structures in this list can be used to
classify the cell as either prokaryotic or eukaryotic. Use examples of the
structures that would help identify the cell in your answer. *
cell structures
*cell membrane
*endoplasmic reticulum
*Golgi apparatus
*mitochondria
*nucleus
*ribosomes

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

Cells destroy body cells infected by a virus or bacteria.

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.