Qua cấu trúc của tế bào nhân chuẩn (Eukaryota), hãy chứng tỏ quan điểm tế bào là một đơn vị cấu trúc cũng đồng thời là đơn vị chức năng.

When water freezes, it . contracts expands

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?