Câu nào sau đây là đúng: A. Khi enzim ARNpôlimeraza gặp tín hiệu kết thúc thì dừng phiên mã.
B. Chiều tổng hợp ARN là 3'→5'.
C. Gen phiên mã xong 1 phân tử mARN thì mới đóng xoắn lại.
D. Ở tế bào nhân sơ, mARN sau phiên mã phải được sửa đổi, cắt bỏ các intron, nối các êxôn lại

check for the pregnancy rating of drug. if its class c or d see if other alternatives

it creates acid rain

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.