1) is there any bread at home? — no, there isn’t (any).

2) is there any butter at home? — yes, there is (some).

3) is there any tea at home? — yes, there is (some).

4) are there any cakes at home? — no, there aren’t (any).
подскажите слова в скобках (any) (some) для чего прописаны в ответах?