A student observes a cell moving quickly through the water on a microscope slide. Which structure most directly creates energy for the cell to move? O cell wall
chloroplast
O mitochondria
nucleus

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.

We all have different forms of genes from our parent(s).what are these different forms called? a. alleles b. characters c. dna d. resources

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?