Sex cells are formed in the testes and ovaries—parts of the reproductive
systems in men and women. Both testes and ovaries also produce
hormones, making them parts of what other system?
Question 4 options:

nervous

respiratory

excretory

endocrine

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.