1) organisms that cannot make their own food are called
2 )animals without backbones are called
3) thin, spiny structures that form the skeletons of many
sponges.
4) is the process by which a single organism produces a new
organism.

The production of cells during mitosis into specialized function is recombination or differentiation

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

How do the evolutionary chart and the video support the claim that all living things are made up of cells?