Two weeks after recovering from a sore throat, Sara, a five year-old, was brought

Two weeks after recovering from a sore throat, Sara, a five year-old, was brought to her pediatrician by her parents. Sara had a fever, headache and has vomited several times. Her parents mentioned that during the previous week, she had not eaten well and was much less energetic than usual. Examination revealed the following: soft tissues were somewhat swollen (edema), her urine contained blood and protein and it had a high specific gravity.1. What kidney condition does Sara probably have? 2. Explain the cause of her hematuria and proteinuria.
3. The doctor prescribed penicillin and a diet with low salt content. What is the reason for each of these?
4. How good are Sara's chances for complete recovery?