Which form of cell transport allows small molecules to move from an area of higher concentration to an area of lower concentration without energy being required from the cell?
a) osmosis
b) pinocytosis
c) phagocytosis
simple diffusion

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

Which type of bacterial reproduction is depicted in the diagram?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.