Chad drew a diagram to compare animal cells and bacterial cells.

Which label belongs in the area marked X?
nucleus
DNA
cell wall
ribosomes

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.