Only one of the original DNA strands acts as a templates during replication.
The nucleus controls all of the functions of the cell, and a captain of the sports team does something similar to that too.
Food Chains: Food chain is a model that shows flow of energy and nutrients from one organism to another organism in an ecosystem. ... A food also shows the relation between organisms as who they are related with each other by the food they eat. Plants and animals requires some type of food for survival.
Change nitrogen gas to ammonia.
Micrographs illustrating the progressive stages of mitosis in a plant cell.