Multiple Choices. Direction: WRITE THE WORD OF the correct answer. A. Read the description of Jose's science investigatory below. Then Answer the questions that follow. Write the word/s of the correct answer. Jose investigated the fungicidal ability of akapulko leaf extracts to kill the fungus that causes athlete's foot. To extract the antifungal chemicals in the akapulko leaves, he used different liquids such as distilled water, ethyl alcohol, coconut oil, and acetone. His investigations revealed that the fungicidal ability of the akapulko leaves was most effective with the use of coconut oil as extracting liquid. He therefore recommended the use of the akapulko leaves-coconut oil mixture for those suffering from athletes foot. He also recommended that more study be done on other discase-causing fungi. Jose further improved on his science investigatory project by quantifying the effectiveness of akapulko leaves in inhabiting the growth of the fungus that causes athlete's foot. With the help of a microbiologist, he performed the agar disc diffusion method, a laboratory procedure for determining the effectiveness of an extract from the akapulko leaves to kill fungus. He did several trials to determine the extract's effectiveness by measuring the diameter of the zone of inhibition of extracts against the fungus. (The zone of inhibition is a clear round zone that can be observed in fungus-containing agar plate) The clear zone on the agar plate showed that the fungus was not resistant to the akapulko extract. Jose took several measurements (in millimeter) of the diameter of the zone of inhibition. Then he compared the numerical data of the control set up consisting of coconut oil as the only inhibitory material. 1. Which is the independent variable in the investigation? •Athlete's foot •Different liquid •Antifungal chemicals •Akapulko leaf extract 2. Which is the dependent variable? •Akapulko leaves •Different liquids 3. If you were to improve on Jose's investigation to determine which of the liquids he used can best extract the antifungal chemicals, on which aspect will you concentrate? •The use of additional extracting liquids •The use of a control setup that will include the antifungal effect of the liquid. •The use of different disease-causing fungi •The use of other parts of the akapulko plant in the experimental setup. 4. Which do you think is the hypothesis in Jose's investigation? •Akapulko leaves contain chemicals that can kill the fungi that cause athlete's foot. •The antifungal chemicals in akapulko leaves can best be extracted with the use of distilled water. •A control set up is prepared as basis for comparison for the experimental setup. •Different liquids can be used to determine the best liquid for extracting antifungal chemicals. •Antifungal Chemicals •Fungicidal ability