Which of these statements about DNA is true?
Responses
DNA is too similar to use for grouping organisms.
DNA is too similar to use for grouping organisms.
Proteins signal the cells to make DNA.
Proteins signal the cells to make DNA.
All animals have DNA.
All animals have DNA.
DNA is a protein.
All animals have DNA.
Which characteristic is common among vertebrates?
Responses
supported by an exoskeleton
supported by an exoskeleton
eat with teeth
eat with teeth
breathe with lungs or gills
breathe with lungs or gills
make own food
make own food
breathe with lungs or gills
Which characteristic is common to a starfish and snail?
Responses
both are echinoderms
both are echinoderms
both are invertebrates
both are invertebrates
both are the same size
both are the same size
both are mollusks
both are invertebrates
Which characteristic distinguishes animals from plants?
Responses
Animals reproduce.
Animals reproduce.
Animals consume other organisms.
Animals consume other organisms.
Plants evolve through natural selection.
Plants evolve through natural selection.
Plants are made of cells.
Plants are made of cells.