Final answer:
Statement 1 indicates the drug enhances responsiveness to calcium, while statement 3 suggests the opposite; this can only be confirmed with the provided data. The broader context involves understanding calcium homeostasis in biological systems.
Step-by-step explanation:
From the information provided and the context of biological experiments, the scenario seems to be related to calcium homeostasis and the impact of a drug on a physiological process, possibly related to muscle contraction or another calcium-dependent process. The question seems to describe a graph or data where letter B indicates a certain point in the experiment regarding calcium concentration and force development. To determine whether force development in the drug-treated group occurs at lower calcium concentrations compared to the control group, one would need to see the actual data points or graph. However, if force development is indeed occurring at lower calcium concentrations in the drug-treated group, it implies that the drug may enhance the sensitivity of the system to calcium. Statement 1 suggests this increased sensitivity, while statement 3 suggests the opposite. Statement 2 indicates that the calcium concentrations are not sufficiently high to elicit force, which may be a control mechanism or baseline measurement.
The concept of calcium homeostasis and its regulation is an example of a negative feedback loop, where the body maintains calcium levels within a narrow range. When calcium levels drop, mechanisms increase calcium absorption and decrease excretion to restore balance.