The walls of the alimentary canal share a common pattern from esophagus to anus. how many layers make up the wall?

Which of the following drugs inhibitor disrupt wall synthesis in bacteria A. streptomycin b. cephalosporin C. tetracycline D. all of the above E. none of the above

Molecules tend to move from an area of high concentration to an area of low concentration in a process known as

Plant cells and animal cells share many of the same structures, but each type of cell also has unique structures.

Compare and contrast Darwin's theory of evolution to the ideas of Lamarck.

What is a downward arching rock layer?

Which is not part of the circulatory system A. heart B. air passageway C. blood D. blood vessels

Explain why an ecological pyramid is smaller at the top then the bottom

Which best describes the organisms in this kingdom? They are autotrophic and have eukaryotic cells They are made of prokaryotic cells They are multicellular and do not have cell walls They are always single celled and produce their own food

The proteome is all the proteins produced by an organism. The genome is the totality of all genes of an organism.

What should be the term for something thag allows some molecules to get through a membrane and keeps others out Insoluble permeability Soluble permeability Selective solubility Selective permeability