Which of the following statements justifies the claim that the conditions in the experiment above could generate the molecular building blocks essential for life?

Students investigated the effect of light on the carbon cycle in aquatic ecosystems by performing the controlled experiment summarized below. The students placed equal amounts of water (pH 7.0) from a large aquarium in glass beakers. The students transferred aquatic plants from the aquarium to several of the beakers, and then they placed equal numbers of the beakers in the light or the dark (Figure 1: groups I and II. Similarly, the students transferred goldfish from the same aquarium to other beakers, and then they placed equal numbers of those beakers in the light or dark (Figure 1: groups III and IV. Finally, the students placed an equal number of beakers containing water only in the light or dark (Figure 1: groups V and VI

After exposing the samples to light or dark for one hour, the students recorded the pH of the water in each beaker. Carbon dioxide dissolved in water will lower the pH of an aqueous solution. In the experiment, the students used changes in pH to monitor changes in the amount of carbon dioxide in the water. For each treatment group, the students calculated the mean pH and standard error, as documented in the table below.

Which of the following graphs is the most appropriate representation of the experimental results documented in the table?

Which of the following statements describes how organisms such as rabbits obtain the carbon necessary for building biological molecules?

Which of the following statements provides evidence to support the claim that no ATP?

Which of the following statements best justifies the inclusion of test tubes 3 and 7 in the experiment?

Which of the following statements best predicts the effect of increasing the concentration of substrate while keeping the concentration of the inhibitor constant?