Peanut butter is made up of fats because it is solid at room temperature.

The model illustrates a process by which a substance is taken up by a cell

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

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