Many molecules are moved through the body by . provide structure for plants. determine what people look like. cells are surrounded and protected by . speed up chemical reactions in the body. hemoglobin, a protein, is built b

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

What is the ecological role of food chains and food webs

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.